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authorLadislav Michl <ladis@linux-mips.org>2017-11-09 18:09:30 +0100
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2017-11-09 18:09:30 +0100
commitc98769475575c8a585f5b3952f4b5f90266f699b (patch)
tree237dffb6a92e25b7f994dfaf64a37a554210fbfd /drivers/video
parent1e7d4beba2f5c8d22c46e15d3b89559934356501 (diff)
video: udlfb: Fix read EDID timeout
While usb_control_msg function expects timeout in miliseconds, a value of HZ is used. Replace it with USB_CTRL_GET_TIMEOUT and also fix error message which looks like: udlfb: Read EDID byte 78 failed err ffffff92 as error is either negative errno or number of bytes transferred use %d format specifier. Returned EDID is in second byte, so return error when less than two bytes are received. Fixes: 18dffdf8913a ("staging: udlfb: enhance EDID and mode handling support") Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Cc: Bernie Thompson <bernie@plugable.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/udlfb.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index ef08a104fb42..d44f14242016 100644
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -769,11 +769,11 @@ static int dlfb_get_edid(struct dlfb_data *dev, char *edid, int len)
for (i = 0; i < len; i++) {
ret = usb_control_msg(dev->udev,
- usb_rcvctrlpipe(dev->udev, 0), (0x02),
- (0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
- HZ);
- if (ret < 1) {
- pr_err("Read EDID byte %d failed err %x\n", i, ret);
+ usb_rcvctrlpipe(dev->udev, 0), 0x02,
+ (0x80 | (0x02 << 5)), i << 8, 0xA1,
+ rbuf, 2, USB_CTRL_GET_TIMEOUT);
+ if (ret < 2) {
+ pr_err("Read EDID byte %d failed: %d\n", i, ret);
i--;
break;
}