V4L/DVB: gspca - sq930x: Check the USB read errors (7d716a36) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/media/video/gspca/sq930x.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -356,12 +356,20 @@ static const struct cap_s {
		static void reg_r(struct gspca_dev *gspca_dev,
		u16 value, int len)
		{
		usb_control_msg(gspca_dev->dev,
		int ret;

		if (gspca_dev->usb_err < 0)
		return;
		ret = usb_control_msg(gspca_dev->dev,
		usb_rcvctrlpipe(gspca_dev->dev, 0),
		0x0c,
		USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
		value, 0, gspca_dev->usb_buf, len,
		500);
		if (ret < 0) {
		PDEBUG(D_ERR, "reg_r %04x failed %d", value, ret);
		gspca_dev->usb_err = ret;
		}
		}

		static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)