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

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.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200914153756.3412156-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2020-09-14 17:37:48 +02:00
parent 719b8f2850
commit 297e84c04d
1 changed files with 19 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/usb/core/message.c
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@ -1081,7 +1081,7 @@ int usb_set_isoch_delay(struct usb_device *dev)
if (dev->speed < USB_SPEED_SUPER)
return 0;
return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
return usb_control_msg_send(dev, 0,
USB_REQ_SET_ISOCH_DELAY,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
dev->hub_delay, 0, NULL, 0,
@ -1203,13 +1203,13 @@ int usb_clear_halt(struct usb_device *dev, int pipe)
* (like some ibmcam model 1 units) seem to expect hosts to make
* this request for iso endpoints, which can't halt!
*/
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
result = usb_control_msg_send(dev, 0,
USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
USB_ENDPOINT_HALT, endp, NULL, 0,
USB_CTRL_SET_TIMEOUT);
/* don't un-halt or force to DATA0 except on success */
if (result < 0)
if (result)
return result;
/* NOTE: seems like Microsoft and Apple don't bother verifying
@ -1571,9 +1571,10 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
if (dev->quirks & USB_QUIRK_NO_SET_INTF)
ret = -EPIPE;
else
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
alternate, interface, NULL, 0, 5000);
ret = usb_control_msg_send(dev, 0,
USB_REQ_SET_INTERFACE,
USB_RECIP_INTERFACE, alternate,
interface, NULL, 0, 5000);
/* 9.4.10 says devices don't need this and are free to STALL the
* request if the interface only has one alternate setting.
@ -1583,7 +1584,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
"manual set_interface for iface %d, alt %d\n",
interface, alternate);
manual = 1;
} else if (ret < 0) {
} else if (ret) {
/* Re-instate the old alt setting */
usb_hcd_alloc_bandwidth(dev, NULL, alt, iface->cur_altsetting);
usb_enable_lpm(dev);
@ -1707,11 +1708,10 @@ int usb_reset_configuration(struct usb_device *dev)
mutex_unlock(hcd->bandwidth_mutex);
return retval;
}
retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_CONFIGURATION, 0,
retval = usb_control_msg_send(dev, 0, USB_REQ_SET_CONFIGURATION, 0,
config->desc.bConfigurationValue, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
if (retval < 0) {
if (retval) {
usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
usb_enable_lpm(dev);
mutex_unlock(hcd->bandwidth_mutex);
@ -2096,10 +2096,10 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
}
kfree(new_interfaces);
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_CONFIGURATION, 0, configuration, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
if (ret < 0 && cp) {
ret = usb_control_msg_send(dev, 0, USB_REQ_SET_CONFIGURATION, 0,
configuration, 0, NULL, 0,
USB_CTRL_SET_TIMEOUT);
if (ret && cp) {
/*
* All the old state is gone, so what else can we do?
* The device is probably useless now anyway.