Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 14:41:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

USB: fix ep_config to return correct value

Browse Source 
This patch fixes ep_config to return correct value. Without patch
ep_config returns submitted lenght minus 4 on succes. With this
patch applied, whole submitted lenght is returned.

ep_config parses submitted data and if buffer starts with (int) 1
it is parsed, otherwise error is reported. Problem is that ep_config
returns size of buffer minus 4 on success. I think that size of buffer
should be returned instead, because there were no problems and
all data were processed.

Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Milan Svoboda 2006-06-26 07:19:00 -07:00 committed by Greg Kroah-Hartman
parent 07cb7f23d0
commit 8a7471aba1
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/gadget/inode.c
View File

@ -741,7 +741,7 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
struct ep_data *data = fd->private_data;
struct usb_ep *ep;
u32 tag;
int value;
int value, length = len;
if ((value = down_interruptible (&data->lock)) < 0)
return value;
@ -792,7 +792,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
goto fail0;
}
}
value = len;
spin_lock_irq (&data->dev->lock);
if (data->dev->state == STATE_DEV_UNBOUND) {
@ -822,8 +821,10 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
data->name);
data->state = STATE_EP_DEFER_ENABLE;
}
if (value == 0)
if (value == 0) {
fd->f_op = &ep_io_operations;
value = length;
}
gone:
spin_unlock_irq (&data->dev->lock);
if (value < 0) {