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| author | Radim Krčmář <rkrcmar@redhat.com> | 2016-11-16 22:07:36 +0100 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2016-11-16 22:07:36 +0100 |
| commit | 813ae37e6aed72cc457094b6066aa38efd66c9e9 (patch) | |
| tree | 8eb38e60d52feb2bb0cd022a434e80de53914719 /drivers/media/usb/stkwebcam | |
| parent | 6314a17fec5cab4784a5cbb75e816b15e3d22e3e (diff) | |
| parent | 47bdf3378d62a627cfb8a54e1180c08d67078b61 (diff) | |
| download | linux-813ae37e6aed72cc457094b6066aa38efd66c9e9.tar.bz2 | |
Merge branch 'x86/cpufeature' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into kvm/next
Topic branch for AVX512_4VNNIW and AVX512_4FMAPS support in KVM.
Diffstat (limited to 'drivers/media/usb/stkwebcam')
| -rw-r--r-- | drivers/media/usb/stkwebcam/stk-webcam.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index db200c9d796d..22a9aae16291 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -147,20 +147,26 @@ int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value) int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value) { struct usb_device *udev = dev->udev; + unsigned char *buf; int ret; + buf = kmalloc(sizeof(u8), GFP_KERNEL); + if (!buf) + return -ENOMEM; + ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0x00, index, - (u8 *) value, + buf, sizeof(u8), 500); - if (ret < 0) - return ret; - else - return 0; + if (ret >= 0) + memcpy(value, buf, sizeof(u8)); + + kfree(buf); + return ret; } static int stk_start_stream(struct stk_camera *dev) |