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media: flexcop-usb: clean up endpoint sanity checks

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Add a temporary variable to make the endpoint sanity checks a bit more
readable.

While at it, fix a typo in the usb_set_interface() comment.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20220822151456.27178-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2022-08-22 17:14:54 +02:00 committed by Greg Kroah-Hartman
parent 67102bd31b
commit 3de50478b5
1 changed files with 8 additions and 4 deletions
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12
drivers/media/usb/b2c2/flexcop-usb.c
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@ -501,17 +501,21 @@ urb_error:
static int flexcop_usb_init(struct flexcop_usb *fc_usb)
{
/* use the alternate setting with the larges buffer */
int ret = usb_set_interface(fc_usb->udev, 0, 1);
struct usb_host_interface *alt;
int ret;
/* use the alternate setting with the largest buffer */
ret = usb_set_interface(fc_usb->udev, 0, 1);
if (ret) {
err("set interface failed.");
return ret;
}
if (fc_usb->uintf->cur_altsetting->desc.bNumEndpoints < 1)
alt = fc_usb->uintf->cur_altsetting;
if (alt->desc.bNumEndpoints < 1)
return -ENODEV;
if (!usb_endpoint_is_isoc_in(&fc_usb->uintf->cur_altsetting->endpoint[0].desc))
if (!usb_endpoint_is_isoc_in(&alt->endpoint[0].desc))
return -ENODEV;
switch (fc_usb->udev->speed) {