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media: flexcop-usb: sanity checking of endpoint type

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Make sure the endpoint is ISOC in and do not hard code USB_DIR_IN.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Oliver Neukum 2020-09-24 13:37:40 +02:00 committed by Mauro Carvalho Chehab
parent e8897acb89
commit d725d20e81
2 changed files with 3 additions and 1 deletions
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2
drivers/media/usb/b2c2/flexcop-usb.c
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@ -513,6 +513,8 @@ static int flexcop_usb_init(struct flexcop_usb *fc_usb)
if (fc_usb->uintf->cur_altsetting->desc.bNumEndpoints < 1)
return -ENODEV;
if (!usb_endpoint_is_isoc_in(&fc_usb->uintf->cur_altsetting->endpoint[1].desc))
return -ENODEV;
switch (fc_usb->udev->speed) {
case USB_SPEED_LOW:

2
drivers/media/usb/b2c2/flexcop-usb.h
View File

@ -15,7 +15,7 @@
#define B2C2_USB_CTRL_PIPE_IN usb_rcvctrlpipe(fc_usb->udev, 0)
#define B2C2_USB_CTRL_PIPE_OUT usb_sndctrlpipe(fc_usb->udev, 0)
#define B2C2_USB_DATA_PIPE usb_rcvisocpipe(fc_usb->udev, 0x81)
#define B2C2_USB_DATA_PIPE usb_rcvisocpipe(fc_usb->udev, 1)
struct flexcop_usb {
struct usb_device *udev;