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USB: core: hub.c: use usb_control_msg_send() in a few places

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There are a few calls to usb_control_msg() that can be converted to use
usb_control_msg_send() instead, so do that in order to make the error
checking a bit simpler and the code smaller.

Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200914153756.3412156-5-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2020-09-14 17:37:49 +02:00
parent 297e84c04d
commit d6a4992495
1 changed files with 40 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
drivers/usb/core/hub.c
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@ -410,8 +410,8 @@ static int get_hub_descriptor(struct usb_device *hdev,
*/ */
static int clear_hub_feature(struct usb_device *hdev, int feature) static int clear_hub_feature(struct usb_device *hdev, int feature)
{ {
return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), return usb_control_msg_send(hdev, 0, USB_REQ_CLEAR_FEATURE, USB_RT_HUB,
USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, 0, NULL, 0, 1000); feature, 0, NULL, 0, 1000);
} }
/* /*
@ -419,9 +419,8 @@ static int clear_hub_feature(struct usb_device *hdev, int feature)
*/ */
int usb_clear_port_feature(struct usb_device *hdev, int port1, int feature) int usb_clear_port_feature(struct usb_device *hdev, int port1, int feature)
{ {
return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), return usb_control_msg_send(hdev, 0, USB_REQ_CLEAR_FEATURE, USB_RT_PORT,
USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port1, feature, port1, NULL, 0, 1000);
NULL, 0, 1000);
} }
/* /*
@ -429,9 +428,8 @@ int usb_clear_port_feature(struct usb_device *hdev, int port1, int feature)
*/ */
static int set_port_feature(struct usb_device *hdev, int port1, int feature) static int set_port_feature(struct usb_device *hdev, int port1, int feature)
{ {
return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), return usb_control_msg_send(hdev, 0, USB_REQ_SET_FEATURE, USB_RT_PORT,
USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port1, feature, port1, NULL, 0, 1000);
NULL, 0, 1000);
} }
static char *to_led_name(int selector) static char *to_led_name(int selector)
@ -755,15 +753,14 @@ hub_clear_tt_buffer(struct usb_device *hdev, u16 devinfo, u16 tt)
/* Need to clear both directions for control ep */ /* Need to clear both directions for control ep */
if (((devinfo >> 11) & USB_ENDPOINT_XFERTYPE_MASK) == if (((devinfo >> 11) & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_CONTROL) { USB_ENDPOINT_XFER_CONTROL) {
int status = usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), int status = usb_control_msg_send(hdev, 0,
HUB_CLEAR_TT_BUFFER, USB_RT_PORT, HUB_CLEAR_TT_BUFFER, USB_RT_PORT,
devinfo ^ 0x8000, tt, NULL, 0, 1000); devinfo ^ 0x8000, tt, NULL, 0, 1000);
if (status) if (status)
return status; return status;
} }
return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), return usb_control_msg_send(hdev, 0, HUB_CLEAR_TT_BUFFER, USB_RT_PORT,
HUB_CLEAR_TT_BUFFER, USB_RT_PORT, devinfo, devinfo, tt, NULL, 0, 1000);
tt, NULL, 0, 1000);
} }
/* /*
@ -1049,11 +1046,10 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
*/ */
if (type != HUB_RESUME) { if (type != HUB_RESUME) {
if (hdev->parent && hub_is_superspeed(hdev)) { if (hdev->parent && hub_is_superspeed(hdev)) {
ret = usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), ret = usb_control_msg_send(hdev, 0, HUB_SET_DEPTH, USB_RT_HUB,
HUB_SET_DEPTH, USB_RT_HUB, hdev->level - 1, 0, NULL, 0,
hdev->level - 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_CTRL_SET_TIMEOUT); if (ret)
if (ret < 0)
dev_err(hub->intfdev, dev_err(hub->intfdev,
"set hub depth failed\n"); "set hub depth failed\n");
} }
@ -2329,13 +2325,10 @@ static int usb_enumerate_device_otg(struct usb_device *udev)
/* enable HNP before suspend, it's simpler */ /* enable HNP before suspend, it's simpler */
if (port1 == bus->otg_port) { if (port1 == bus->otg_port) {
bus->b_hnp_enable = 1; bus->b_hnp_enable = 1;
err = usb_control_msg(udev, err = usb_control_msg_send(udev, 0, USB_REQ_SET_FEATURE, 0,
usb_sndctrlpipe(udev, 0), USB_DEVICE_B_HNP_ENABLE, 0,
USB_REQ_SET_FEATURE, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_DEVICE_B_HNP_ENABLE, if (err) {
0, NULL, 0,
USB_CTRL_SET_TIMEOUT);
if (err < 0) {
/* /*
* OTG MESSAGE: report errors here, * OTG MESSAGE: report errors here,
* customize to match your product. * customize to match your product.
@ -2347,13 +2340,10 @@ static int usb_enumerate_device_otg(struct usb_device *udev)
} else if (desc->bLength == sizeof } else if (desc->bLength == sizeof
(struct usb_otg_descriptor)) { (struct usb_otg_descriptor)) {
/* Set a_alt_hnp_support for legacy otg device */ /* Set a_alt_hnp_support for legacy otg device */
err = usb_control_msg(udev, err = usb_control_msg_send(udev, 0, USB_REQ_SET_FEATURE, 0,
usb_sndctrlpipe(udev, 0), USB_DEVICE_A_ALT_HNP_SUPPORT, 0,
USB_REQ_SET_FEATURE, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_DEVICE_A_ALT_HNP_SUPPORT, if (err)
0, NULL, 0,
USB_CTRL_SET_TIMEOUT);
if (err < 0)
dev_err(&udev->dev, dev_err(&udev->dev,
"set a_alt_hnp_support failed: %d\n", "set a_alt_hnp_support failed: %d\n",
err); err);
@ -3121,10 +3111,8 @@ int usb_disable_ltm(struct usb_device *udev)
if (!udev->actconfig) if (!udev->actconfig)
return 0; return 0;
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), return usb_control_msg_send(udev, 0, USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE,
USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_LTM_ENABLE, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_DEVICE_LTM_ENABLE, 0, NULL, 0,
USB_CTRL_SET_TIMEOUT);
} }
EXPORT_SYMBOL_GPL(usb_disable_ltm); EXPORT_SYMBOL_GPL(usb_disable_ltm);
@ -3143,10 +3131,8 @@ void usb_enable_ltm(struct usb_device *udev)
if (!udev->actconfig) if (!udev->actconfig)
return; return;
usb_control_msg(udev, usb_sndctrlpipe(udev, 0), usb_control_msg_send(udev, 0, USB_REQ_SET_FEATURE, USB_RECIP_DEVICE,
USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_LTM_ENABLE, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_DEVICE_LTM_ENABLE, 0, NULL, 0,
USB_CTRL_SET_TIMEOUT);
} }
EXPORT_SYMBOL_GPL(usb_enable_ltm); EXPORT_SYMBOL_GPL(usb_enable_ltm);
@ -3163,17 +3149,14 @@ EXPORT_SYMBOL_GPL(usb_enable_ltm);
static int usb_enable_remote_wakeup(struct usb_device *udev) static int usb_enable_remote_wakeup(struct usb_device *udev)
{ {
if (udev->speed < USB_SPEED_SUPER) if (udev->speed < USB_SPEED_SUPER)
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), return usb_control_msg_send(udev, 0, USB_REQ_SET_FEATURE, USB_RECIP_DEVICE,
USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_REMOTE_WAKEUP, 0,
USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_CTRL_SET_TIMEOUT);
else else
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), return usb_control_msg_send(udev, 0, USB_REQ_SET_FEATURE, USB_RECIP_INTERFACE,
USB_REQ_SET_FEATURE, USB_RECIP_INTERFACE, USB_INTRF_FUNC_SUSPEND,
USB_INTRF_FUNC_SUSPEND, USB_INTRF_FUNC_SUSPEND_RW | USB_INTRF_FUNC_SUSPEND_LP,
USB_INTRF_FUNC_SUSPEND_RW | NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_INTRF_FUNC_SUSPEND_LP,
NULL, 0, USB_CTRL_SET_TIMEOUT);
} }
/* /*
@ -3189,15 +3172,13 @@ static int usb_enable_remote_wakeup(struct usb_device *udev)
static int usb_disable_remote_wakeup(struct usb_device *udev) static int usb_disable_remote_wakeup(struct usb_device *udev)
{ {
if (udev->speed < USB_SPEED_SUPER) if (udev->speed < USB_SPEED_SUPER)
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), return usb_control_msg_send(udev, 0, USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE,
USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0,
USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_CTRL_SET_TIMEOUT);
else else
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), return usb_control_msg_send(udev, 0, USB_REQ_SET_FEATURE, USB_RECIP_INTERFACE,
USB_REQ_SET_FEATURE, USB_RECIP_INTERFACE, USB_INTRF_FUNC_SUSPEND, 0, NULL, 0,
USB_INTRF_FUNC_SUSPEND, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
USB_CTRL_SET_TIMEOUT);
} }
/* Count of wakeup-enabled devices at or below udev */ /* Count of wakeup-enabled devices at or below udev */