forked from Minki/linux
Staging: frontier: Make checkpatch.pl much happier with alphatrack driver
Signed-off-by: David Täht <d@teklibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Täht
Greg Kroah-Hartman
parent
7c68d6b717
commit
f6a0ccadd1
@ -41,19 +41,13 @@
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#include <linux/mutex.h>
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#include <linux/version.h>
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#include <asm/uaccess.h>
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#include <linux/uaccess.h>
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#include <linux/input.h>
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#include <linux/usb.h>
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#include <linux/poll.h>
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#include "surface_sysfs.h"
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/* make this work on older kernel versions */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
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#include "frontier_compat.h"
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#endif /* older kernel versions */
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#include "alphatrack.h"
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#define VENDOR_ID 0x165b
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@ -62,19 +56,18 @@
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#ifdef CONFIG_USB_DYNAMIC_MINORS
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#define USB_ALPHATRACK_MINOR_BASE 0
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#else
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// FIXME 176 - is another driver's minor - apply for that
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// #define USB_ALPHATRACK_MINOR_BASE 177
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/* FIXME 176 - is another driver's minor - apply for that */
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#define USB_ALPHATRACK_MINOR_BASE 176
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#endif
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/* table of devices that work with this driver */
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static struct usb_device_id usb_alphatrack_table [] = {
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{ USB_DEVICE(VENDOR_ID, PRODUCT_ID) },
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{ } /* Terminating entry */
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static struct usb_device_id usb_alphatrack_table[] = {
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{USB_DEVICE(VENDOR_ID, PRODUCT_ID)},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, usb_alphatrack_table);
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MODULE_VERSION("0.40");
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MODULE_VERSION("0.41");
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MODULE_AUTHOR("Mike Taht <m@taht.net>");
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MODULE_DESCRIPTION("Alphatrack USB Driver");
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MODULE_LICENSE("GPL");
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@ -93,18 +86,18 @@ MODULE_SUPPORTED_DEVICE("Frontier Designs Alphatrack Control Surface");
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#define ALPHATRACK_USB_TIMEOUT 10
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#define OUTPUT_CMD_SIZE 8
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#define INPUT_CMD_SIZE 12
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#define ALPHATRACK_DEBUG 0
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static int debug = 0;
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static int debug = ALPHATRACK_DEBUG;
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/* Use our own dbg macro */
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#define dbg_info(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)
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#define dbg_info(dev, format, arg...) do \
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{ if (debug) dev_info(dev , format , ## arg); } while (0)
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#define alphatrack_ocmd_info(dev, cmd, format, arg...)
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#define alphatrack_icmd_info(dev, cmd, format, arg...)
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/* Module parameters */
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module_param(debug, int, S_IRUGO | S_IWUSR);
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@ -116,14 +109,14 @@ MODULE_PARM_DESC(debug, "Debug enabled or not");
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static int ring_buffer_size = RING_BUFFER_SIZE;
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module_param(ring_buffer_size, int, S_IRUGO);
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module_param(ring_buffer_size, int, S_IRUGO);
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MODULE_PARM_DESC(ring_buffer_size, "Read ring buffer size");
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/* The write_buffer can one day contain more than one interrupt out transfer.
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*/
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static int write_buffer_size = WRITE_BUFFER_SIZE;
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module_param(write_buffer_size, int, S_IRUGO);
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module_param(write_buffer_size, int, S_IRUGO);
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MODULE_PARM_DESC(write_buffer_size, "Write buffer size");
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/*
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@ -133,55 +126,56 @@ MODULE_PARM_DESC(write_buffer_size, "Write buffer size");
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static int min_interrupt_in_interval = ALPHATRACK_USB_TIMEOUT;
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module_param(min_interrupt_in_interval, int, 0);
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MODULE_PARM_DESC(min_interrupt_in_interval, "Minimum interrupt in interval in ms");
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MODULE_PARM_DESC(min_interrupt_in_interval,
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"Minimum interrupt in interval in ms");
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static int min_interrupt_out_interval = ALPHATRACK_USB_TIMEOUT;
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module_param(min_interrupt_out_interval, int, 0);
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MODULE_PARM_DESC(min_interrupt_out_interval, "Minimum interrupt out interval in ms");
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MODULE_PARM_DESC(min_interrupt_out_interval,
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"Minimum interrupt out interval in ms");
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/* Structure to hold all of our device specific stuff */
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struct usb_alphatrack {
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struct semaphore sem; /* locks this structure */
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struct usb_interface* intf; /* save off the usb interface pointer */
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int open_count; /* number of times this port has been opened */
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struct semaphore sem; /* locks this structure */
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struct usb_interface *intf; /* save off the usb interface pointer */
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int open_count; /* number of times this port has been opened */
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struct alphatrack_icmd (*ring_buffer)[RING_BUFFER_SIZE]; /* just make c happy */
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struct alphatrack_ocmd (*write_buffer)[WRITE_BUFFER_SIZE]; /* just make c happy */
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unsigned int ring_head;
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unsigned int ring_tail;
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/* make gcc happy */
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struct alphatrack_icmd (*ring_buffer)[RING_BUFFER_SIZE];
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struct alphatrack_ocmd (*write_buffer)[WRITE_BUFFER_SIZE];
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unsigned int ring_head;
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unsigned int ring_tail;
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wait_queue_head_t read_wait;
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wait_queue_head_t write_wait;
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wait_queue_head_t read_wait;
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wait_queue_head_t write_wait;
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unsigned char* interrupt_in_buffer;
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unsigned char* oldi_buffer;
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struct usb_endpoint_descriptor* interrupt_in_endpoint;
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struct urb* interrupt_in_urb;
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int interrupt_in_interval;
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size_t interrupt_in_endpoint_size;
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int interrupt_in_running;
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int interrupt_in_done;
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unsigned char *interrupt_in_buffer;
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unsigned char *oldi_buffer;
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struct usb_endpoint_descriptor *interrupt_in_endpoint;
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struct urb *interrupt_in_urb;
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int interrupt_in_interval;
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size_t interrupt_in_endpoint_size;
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int interrupt_in_running;
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int interrupt_in_done;
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char* interrupt_out_buffer;
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struct usb_endpoint_descriptor* interrupt_out_endpoint;
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struct urb* interrupt_out_urb;
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int interrupt_out_interval;
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size_t interrupt_out_endpoint_size;
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int interrupt_out_busy;
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char *interrupt_out_buffer;
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struct usb_endpoint_descriptor *interrupt_out_endpoint;
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struct urb *interrupt_out_urb;
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int interrupt_out_interval;
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size_t interrupt_out_endpoint_size;
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int interrupt_out_busy;
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atomic_t writes_pending;
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int event; /* alternate interface to events */
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int fader; /* 10 bits */
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int lights; /* 23 bits */
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unsigned char dump_state; /* 0 if disabled 1 if enabled */
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unsigned char enable; /* 0 if disabled 1 if enabled */
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unsigned char offline; /* if the device is out of range or asleep */
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unsigned char verbose; /* be verbose in error reporting */
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unsigned char last_cmd[OUTPUT_CMD_SIZE];
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unsigned char screen[32];
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int event; /* alternate interface to events */
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int fader; /* 10 bits */
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int lights; /* 23 bits */
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unsigned char dump_state; /* 0 if disabled 1 if enabled */
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unsigned char enable; /* 0 if disabled 1 if enabled */
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unsigned char offline; /* if the device is out of range or asleep */
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unsigned char verbose; /* be verbose in error reporting */
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unsigned char last_cmd[OUTPUT_CMD_SIZE];
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unsigned char screen[32];
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};
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/* prevent races between open() and disconnect() */
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@ -219,7 +213,7 @@ static void usb_alphatrack_delete(struct usb_alphatrack *dev)
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kfree(dev->ring_buffer);
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kfree(dev->interrupt_in_buffer);
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kfree(dev->interrupt_out_buffer);
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kfree(dev); // fixme oldi_buffer
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kfree(dev); /* fixme oldi_buffer */
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}
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/**
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@ -234,39 +228,52 @@ static void usb_alphatrack_interrupt_in_callback(struct urb *urb)
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if (urb->status) {
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if (urb->status == -ENOENT ||
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urb->status == -ECONNRESET ||
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urb->status == -ESHUTDOWN) {
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urb->status == -ECONNRESET || urb->status == -ESHUTDOWN) {
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goto exit;
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} else {
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dbg_info(&dev->intf->dev, "%s: nonzero status received: %d\n",
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__func__, urb->status);
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goto resubmit; /* maybe we can recover */
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dbg_info(&dev->intf->dev,
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"%s: nonzero status received: %d\n", __func__,
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urb->status);
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goto resubmit; /* maybe we can recover */
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}
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}
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if (urb->actual_length != INPUT_CMD_SIZE) {
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dev_warn(&dev->intf->dev,
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"Urb length was %d bytes!! Do something intelligent \n", urb->actual_length);
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"Urb length was %d bytes!!"
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"Do something intelligent \n", urb->actual_length);
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} else {
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alphatrack_ocmd_info(&dev->intf->dev,&(*dev->ring_buffer)[dev->ring_tail].cmd,"%s", "bla");
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if(memcmp(dev->interrupt_in_buffer,dev->oldi_buffer,INPUT_CMD_SIZE)==0) {
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goto resubmit;
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alphatrack_ocmd_info(&dev->intf->dev,
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&(*dev->ring_buffer)[dev->ring_tail].cmd,
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"%s", "bla");
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if (memcmp
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(dev->interrupt_in_buffer, dev->oldi_buffer,
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INPUT_CMD_SIZE) == 0) {
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goto resubmit;
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}
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memcpy(dev->oldi_buffer,dev->interrupt_in_buffer,INPUT_CMD_SIZE);
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memcpy(dev->oldi_buffer, dev->interrupt_in_buffer,
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INPUT_CMD_SIZE);
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#if SUPPRESS_EXTRA_OFFLINE_EVENTS
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if(dev->offline == 2 && dev->interrupt_in_buffer[1] == 0xff) { goto resubmit; }
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if(dev->offline == 1 && dev->interrupt_in_buffer[1] == 0xff) { dev->offline = 2; goto resubmit; }
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if (dev->offline == 2 && dev->interrupt_in_buffer[1] == 0xff)
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goto resubmit;
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if (dev->offline == 1 && dev->interrupt_in_buffer[1] == 0xff) {
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dev->offline = 2;
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goto resubmit;
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}
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/* Always pass one offline event up the stack */
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if(dev->offline > 0 && dev->interrupt_in_buffer[1] != 0xff) { dev->offline = 0; }
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if(dev->offline == 0 && dev->interrupt_in_buffer[1] == 0xff) { dev->offline = 1; }
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if (dev->offline > 0 && dev->interrupt_in_buffer[1] != 0xff)
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dev->offline = 0;
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if (dev->offline == 0 && dev->interrupt_in_buffer[1] == 0xff)
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dev->offline = 1;
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#endif
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dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
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next_ring_head = (dev->ring_head+1) % ring_buffer_size;
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dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n",
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__func__, dev->ring_head, dev->ring_tail);
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next_ring_head = (dev->ring_head + 1) % ring_buffer_size;
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if (next_ring_head != dev->ring_tail) {
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memcpy(&((*dev->ring_buffer)[dev->ring_head]),
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dev->interrupt_in_buffer, urb->actual_length);
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dev->interrupt_in_buffer, urb->actual_length);
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dev->ring_head = next_ring_head;
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retval = 0;
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memset(dev->interrupt_in_buffer, 0, urb->actual_length);
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@ -330,7 +337,7 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
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if (!interface) {
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err("%s - error, can't find device for minor %d\n",
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__func__, subminor);
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__func__, subminor);
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retval = -ENODEV;
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goto unlock_disconnect_exit;
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}
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@ -361,11 +368,11 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
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usb_fill_int_urb(dev->interrupt_in_urb,
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interface_to_usbdev(interface),
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usb_rcvintpipe(interface_to_usbdev(interface),
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dev->interrupt_in_endpoint->bEndpointAddress),
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dev->interrupt_in_endpoint->
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bEndpointAddress),
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dev->interrupt_in_buffer,
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dev->interrupt_in_endpoint_size,
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usb_alphatrack_interrupt_in_callback,
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dev,
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usb_alphatrack_interrupt_in_callback, dev,
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dev->interrupt_in_interval);
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dev->interrupt_in_running = 1;
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@ -375,7 +382,8 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
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retval = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL);
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if (retval) {
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dev_err(&interface->dev, "Couldn't submit interrupt_in_urb %d\n", retval);
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dev_err(&interface->dev,
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"Couldn't submit interrupt_in_urb %d\n", retval);
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dev->interrupt_in_running = 0;
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dev->open_count = 0;
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goto unlock_exit;
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@ -384,7 +392,6 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
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/* save device in the file's private structure */
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file->private_data = dev;
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unlock_exit:
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up(&dev->sem);
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@ -430,7 +437,9 @@ static int usb_alphatrack_release(struct inode *inode, struct file *file)
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/* wait until write transfer is finished */
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if (dev->interrupt_out_busy)
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wait_event_interruptible_timeout(dev->write_wait, !dev->interrupt_out_busy, 2 * HZ);
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wait_event_interruptible_timeout(dev->write_wait,
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!dev->interrupt_out_busy,
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2 * HZ);
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usb_alphatrack_abort_transfers(dev);
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dev->open_count = 0;
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@ -444,7 +453,7 @@ exit:
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/**
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* usb_alphatrack_poll
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*/
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static unsigned int usb_alphatrack_poll(struct file *file, poll_table *wait)
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static unsigned int usb_alphatrack_poll(struct file *file, poll_table * wait)
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{
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struct usb_alphatrack *dev;
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unsigned int mask = 0;
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@ -465,8 +474,8 @@ static unsigned int usb_alphatrack_poll(struct file *file, poll_table *wait)
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/**
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* usb_alphatrack_read
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*/
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static ssize_t usb_alphatrack_read(struct file *file, char __user *buffer, size_t count,
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loff_t *ppos)
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static ssize_t usb_alphatrack_read(struct file *file, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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struct usb_alphatrack *dev;
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int retval = 0;
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@ -493,30 +502,36 @@ static ssize_t usb_alphatrack_read(struct file *file, char __user *buffer, size_
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}
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while (dev->ring_head == dev->ring_tail) {
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if (file->f_flags & O_NONBLOCK) {
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retval = -EAGAIN;
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goto unlock_exit;
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}
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dev->interrupt_in_done = 0 ;
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retval = wait_event_interruptible(dev->read_wait, dev->interrupt_in_done);
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if (retval < 0) {
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goto unlock_exit;
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}
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if (file->f_flags & O_NONBLOCK) {
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retval = -EAGAIN;
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goto unlock_exit;
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}
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dev->interrupt_in_done = 0;
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retval =
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wait_event_interruptible(dev->read_wait,
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dev->interrupt_in_done);
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if (retval < 0)
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goto unlock_exit;
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}
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alphatrack_ocmd_info(&dev->intf->dev, &(*dev->ring_buffer)[dev->ring_tail].cmd, "%s", ": copying to userspace");
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alphatrack_ocmd_info(&dev->intf->dev,
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&(*dev->ring_buffer)[dev->ring_tail].cmd, "%s",
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": copying to userspace");
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c = 0;
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while((c < count) && (dev->ring_tail != dev->ring_head)) {
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if (copy_to_user(&buffer[c], &(*dev->ring_buffer)[dev->ring_tail], INPUT_CMD_SIZE)) {
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retval = -EFAULT;
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goto unlock_exit;
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}
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dev->ring_tail = (dev->ring_tail+1) % ring_buffer_size;
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c+=INPUT_CMD_SIZE;
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dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
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}
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retval = c;
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c = 0;
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while ((c < count) && (dev->ring_tail != dev->ring_head)) {
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if (copy_to_user
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(&buffer[c], &(*dev->ring_buffer)[dev->ring_tail],
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INPUT_CMD_SIZE)) {
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retval = -EFAULT;
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goto unlock_exit;
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}
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dev->ring_tail = (dev->ring_tail + 1) % ring_buffer_size;
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c += INPUT_CMD_SIZE;
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dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n",
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__func__, dev->ring_head, dev->ring_tail);
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}
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retval = c;
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unlock_exit:
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/* unlock the device */
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@ -529,8 +544,9 @@ exit:
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/**
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* usb_alphatrack_write
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*/
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static ssize_t usb_alphatrack_write(struct file *file, const char __user *buffer,
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size_t count, loff_t *ppos)
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static ssize_t usb_alphatrack_write(struct file *file,
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const char __user *buffer, size_t count,
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loff_t *ppos)
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{
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struct usb_alphatrack *dev;
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size_t bytes_to_write;
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@ -561,19 +577,24 @@ static ssize_t usb_alphatrack_write(struct file *file, const char __user *buffer
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retval = -EAGAIN;
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goto unlock_exit;
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}
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retval = wait_event_interruptible(dev->write_wait, !dev->interrupt_out_busy);
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if (retval < 0) {
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retval =
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wait_event_interruptible(dev->write_wait,
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!dev->interrupt_out_busy);
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if (retval < 0)
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goto unlock_exit;
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}
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}
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/* write the data into interrupt_out_buffer from userspace */
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/* FIXME - if you write more than 12 bytes this breaks */
|
||||
bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size);
|
||||
/* FIXME - if you write more than 12 bytes this breaks */
|
||||
bytes_to_write =
|
||||
min(count, write_buffer_size * dev->interrupt_out_endpoint_size);
|
||||
if (bytes_to_write < count)
|
||||
dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n",count-bytes_to_write);
|
||||
dev_warn(&dev->intf->dev,
|
||||
"Write buffer overflow, %zd bytes dropped\n",
|
||||
count - bytes_to_write);
|
||||
|
||||
dbg_info(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", __func__, count, bytes_to_write);
|
||||
dbg_info(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n",
|
||||
__func__, count, bytes_to_write);
|
||||
|
||||
if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write)) {
|
||||
retval = -EFAULT;
|
||||
@ -589,11 +610,10 @@ static ssize_t usb_alphatrack_write(struct file *file, const char __user *buffer
|
||||
usb_fill_int_urb(dev->interrupt_out_urb,
|
||||
interface_to_usbdev(dev->intf),
|
||||
usb_sndintpipe(interface_to_usbdev(dev->intf),
|
||||
dev->interrupt_out_endpoint->bEndpointAddress),
|
||||
dev->interrupt_out_buffer,
|
||||
bytes_to_write,
|
||||
usb_alphatrack_interrupt_out_callback,
|
||||
dev,
|
||||
dev->interrupt_out_endpoint->
|
||||
bEndpointAddress),
|
||||
dev->interrupt_out_buffer, bytes_to_write,
|
||||
usb_alphatrack_interrupt_out_callback, dev,
|
||||
dev->interrupt_out_interval);
|
||||
dev->interrupt_out_busy = 1;
|
||||
atomic_inc(&dev->writes_pending);
|
||||
@ -618,12 +638,12 @@ exit:
|
||||
|
||||
/* file operations needed when we register this driver */
|
||||
static const struct file_operations usb_alphatrack_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.read = usb_alphatrack_read,
|
||||
.write = usb_alphatrack_write,
|
||||
.open = usb_alphatrack_open,
|
||||
.release = usb_alphatrack_release,
|
||||
.poll = usb_alphatrack_poll,
|
||||
.owner = THIS_MODULE,
|
||||
.read = usb_alphatrack_read,
|
||||
.write = usb_alphatrack_write,
|
||||
.open = usb_alphatrack_open,
|
||||
.release = usb_alphatrack_release,
|
||||
.poll = usb_alphatrack_poll,
|
||||
};
|
||||
|
||||
/*
|
||||
@ -632,19 +652,19 @@ static const struct file_operations usb_alphatrack_fops = {
|
||||
*/
|
||||
|
||||
static struct usb_class_driver usb_alphatrack_class = {
|
||||
.name = "alphatrack%d",
|
||||
.fops = &usb_alphatrack_fops,
|
||||
.minor_base = USB_ALPHATRACK_MINOR_BASE,
|
||||
.name = "alphatrack%d",
|
||||
.fops = &usb_alphatrack_fops,
|
||||
.minor_base = USB_ALPHATRACK_MINOR_BASE,
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* usb_alphatrack_probe
|
||||
*
|
||||
* Called by the usb core when a new device is connected that it thinks
|
||||
* this driver might be interested in.
|
||||
*/
|
||||
static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_device_id *id)
|
||||
static int usb_alphatrack_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
struct usb_device *udev = interface_to_usbdev(intf);
|
||||
struct usb_alphatrack *dev = NULL;
|
||||
@ -683,28 +703,35 @@ static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_dev
|
||||
goto error;
|
||||
}
|
||||
if (dev->interrupt_out_endpoint == NULL)
|
||||
dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n");
|
||||
dev_warn(&intf->dev,
|
||||
"Interrupt out endpoint not found"
|
||||
"(using control endpoint instead)\n");
|
||||
|
||||
dev->interrupt_in_endpoint_size = le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize);
|
||||
dev->interrupt_in_endpoint_size =
|
||||
le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize);
|
||||
|
||||
if (dev->interrupt_in_endpoint_size != 64)
|
||||
dev_warn(&intf->dev, "Interrupt in endpoint size is not 64!\n");
|
||||
dev_warn(&intf->dev, "Interrupt in endpoint size is not 64!\n");
|
||||
|
||||
if(ring_buffer_size == 0) { ring_buffer_size = RING_BUFFER_SIZE; }
|
||||
if (ring_buffer_size == 0)
|
||||
ring_buffer_size = RING_BUFFER_SIZE;
|
||||
|
||||
true_size = min(ring_buffer_size,RING_BUFFER_SIZE);
|
||||
true_size = min(ring_buffer_size, RING_BUFFER_SIZE);
|
||||
|
||||
/* FIXME - there are more usb_alloc routines for dma correctness. Needed? */
|
||||
|
||||
// dev->ring_buffer = kmalloc((true_size*sizeof(struct alphatrack_icmd))+12, GFP_KERNEL);
|
||||
dev->ring_buffer = kmalloc((true_size*sizeof(struct alphatrack_icmd)), GFP_KERNEL);
|
||||
/* FIXME - there are more usb_alloc routines for dma correctness.
|
||||
Needed? */
|
||||
dev->ring_buffer =
|
||||
kmalloc((true_size * sizeof(struct alphatrack_icmd)), GFP_KERNEL);
|
||||
|
||||
if (!dev->ring_buffer) {
|
||||
dev_err(&intf->dev, "Couldn't allocate input ring_buffer of size %d\n",true_size);
|
||||
dev_err(&intf->dev,
|
||||
"Couldn't allocate input ring_buffer of size %d\n",
|
||||
true_size);
|
||||
goto error;
|
||||
}
|
||||
|
||||
dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);
|
||||
dev->interrupt_in_buffer =
|
||||
kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);
|
||||
|
||||
if (!dev->interrupt_in_buffer) {
|
||||
dev_err(&intf->dev, "Couldn't allocate interrupt_in_buffer\n");
|
||||
@ -721,23 +748,30 @@ static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_dev
|
||||
goto error;
|
||||
}
|
||||
|
||||
dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? le16_to_cpu(dev->interrupt_out_endpoint->wMaxPacketSize) :
|
||||
udev->descriptor.bMaxPacketSize0;
|
||||
dev->interrupt_out_endpoint_size =
|
||||
dev->interrupt_out_endpoint ? le16_to_cpu(dev->
|
||||
interrupt_out_endpoint->
|
||||
wMaxPacketSize) : udev->
|
||||
descriptor.bMaxPacketSize0;
|
||||
|
||||
if (dev->interrupt_out_endpoint_size !=64)
|
||||
dev_warn(&intf->dev, "Interrupt out endpoint size is not 64!)\n");
|
||||
if (dev->interrupt_out_endpoint_size != 64)
|
||||
dev_warn(&intf->dev,
|
||||
"Interrupt out endpoint size is not 64!)\n");
|
||||
|
||||
if(write_buffer_size == 0) { write_buffer_size = WRITE_BUFFER_SIZE; }
|
||||
true_size = min(write_buffer_size,WRITE_BUFFER_SIZE);
|
||||
if (write_buffer_size == 0)
|
||||
write_buffer_size = WRITE_BUFFER_SIZE;
|
||||
true_size = min(write_buffer_size, WRITE_BUFFER_SIZE);
|
||||
|
||||
dev->interrupt_out_buffer = kmalloc(true_size*dev->interrupt_out_endpoint_size, GFP_KERNEL);
|
||||
dev->interrupt_out_buffer =
|
||||
kmalloc(true_size * dev->interrupt_out_endpoint_size, GFP_KERNEL);
|
||||
|
||||
if (!dev->interrupt_out_buffer) {
|
||||
dev_err(&intf->dev, "Couldn't allocate interrupt_out_buffer\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
dev->write_buffer = kmalloc(sizeof(struct alphatrack_ocmd)*true_size, GFP_KERNEL);
|
||||
dev->write_buffer =
|
||||
kmalloc(sizeof(struct alphatrack_ocmd) * true_size, GFP_KERNEL);
|
||||
|
||||
if (!dev->write_buffer) {
|
||||
dev_err(&intf->dev, "Couldn't allocate write_buffer \n");
|
||||
@ -749,25 +783,36 @@ static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_dev
|
||||
dev_err(&intf->dev, "Couldn't allocate interrupt_out_urb\n");
|
||||
goto error;
|
||||
}
|
||||
dev->interrupt_in_interval = min_interrupt_in_interval > dev->interrupt_in_endpoint->bInterval ? min_interrupt_in_interval : dev->interrupt_in_endpoint->bInterval;
|
||||
dev->interrupt_in_interval =
|
||||
min_interrupt_in_interval >
|
||||
dev->interrupt_in_endpoint->
|
||||
bInterval ? min_interrupt_in_interval : dev->interrupt_in_endpoint->
|
||||
bInterval;
|
||||
if (dev->interrupt_out_endpoint)
|
||||
dev->interrupt_out_interval = min_interrupt_out_interval > dev->interrupt_out_endpoint->bInterval ? min_interrupt_out_interval : dev->interrupt_out_endpoint->bInterval;
|
||||
dev->interrupt_out_interval =
|
||||
min_interrupt_out_interval >
|
||||
dev->interrupt_out_endpoint->
|
||||
bInterval ? min_interrupt_out_interval : dev->
|
||||
interrupt_out_endpoint->bInterval;
|
||||
|
||||
/* we can register the device now, as it is ready */
|
||||
usb_set_intfdata(intf, dev);
|
||||
|
||||
atomic_set(&dev->writes_pending,0);
|
||||
atomic_set(&dev->writes_pending, 0);
|
||||
retval = usb_register_dev(intf, &usb_alphatrack_class);
|
||||
if (retval) {
|
||||
/* something prevented us from registering this driver */
|
||||
dev_err(&intf->dev, "Not able to get a minor for this device.\n");
|
||||
dev_err(&intf->dev,
|
||||
"Not able to get a minor for this device.\n");
|
||||
usb_set_intfdata(intf, NULL);
|
||||
goto error;
|
||||
}
|
||||
|
||||
/* let the user know what node this device is now attached to */
|
||||
dev_info(&intf->dev, "Alphatrack Device #%d now attached to major %d minor %d\n",
|
||||
(intf->minor - USB_ALPHATRACK_MINOR_BASE), USB_MAJOR, intf->minor);
|
||||
dev_info(&intf->dev,
|
||||
"Alphatrack Device #%d now attached to major %d minor %d\n",
|
||||
(intf->minor - USB_ALPHATRACK_MINOR_BASE), USB_MAJOR,
|
||||
intf->minor);
|
||||
|
||||
exit:
|
||||
return retval;
|
||||
@ -809,7 +854,7 @@ static void usb_alphatrack_disconnect(struct usb_interface *intf)
|
||||
up(&dev->sem);
|
||||
}
|
||||
|
||||
atomic_set(&dev->writes_pending,0);
|
||||
atomic_set(&dev->writes_pending, 0);
|
||||
mutex_unlock(&disconnect_mutex);
|
||||
|
||||
dev_info(&intf->dev, "Alphatrack Surface #%d now disconnected\n",
|
||||
@ -818,10 +863,10 @@ static void usb_alphatrack_disconnect(struct usb_interface *intf)
|
||||
|
||||
/* usb specific object needed to register this driver with the usb subsystem */
|
||||
static struct usb_driver usb_alphatrack_driver = {
|
||||
.name = "alphatrack",
|
||||
.probe = usb_alphatrack_probe,
|
||||
.disconnect = usb_alphatrack_disconnect,
|
||||
.id_table = usb_alphatrack_table,
|
||||
.name = "alphatrack",
|
||||
.probe = usb_alphatrack_probe,
|
||||
.disconnect = usb_alphatrack_disconnect,
|
||||
.id_table = usb_alphatrack_table,
|
||||
};
|
||||
|
||||
/**
|
||||
@ -834,7 +879,8 @@ static int __init usb_alphatrack_init(void)
|
||||
/* register this driver with the USB subsystem */
|
||||
retval = usb_register(&usb_alphatrack_driver);
|
||||
if (retval)
|
||||
err("usb_register failed for the "__FILE__" driver. Error number %d\n", retval);
|
||||
err("usb_register failed for the " __FILE__
|
||||
" driver. Error number %d\n", retval);
|
||||
|
||||
return retval;
|
||||
}
|
||||
@ -850,4 +896,3 @@ static void __exit usb_alphatrack_exit(void)
|
||||
|
||||
module_init(usb_alphatrack_init);
|
||||
module_exit(usb_alphatrack_exit);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user