[PATCH 5.15 246/279] drm/udl: fix control-message timeout

Greg Kroah-Hartman
2021-11-24T14:04:21Z

From: Johan Hovold <johan@kernel.org>

commit 5591c8f79db1729d9c5ac7f5b4d3a5c26e262d93 upstream.

USB control-message timeouts are specified in milliseconds and should
specifically not vary with CONFIG_HZ.

Fixes: 5320918b9a87 ("drm/udl: initial UDL driver (v4)")
Cc: stable@vger.kernel.org # 3.4
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025115353.5089-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/udl/udl_connector.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/udl/udl_connector.c
+++ b/drivers/gpu/drm/udl/udl_connector.c
@@ -30,7 +30,7 @@ static int udl_get_edid_block(void *data
int bval = (i + block * EDID_LENGTH) << 8;
ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
0x02, (0x80 | (0x02 << 5)), bval,
- 0xA1, read_buff, 2, HZ);
+ 0xA1, read_buff, 2, 1000);
if (ret < 1) {
DRM_ERROR("Read EDID byte %d failed err %x\n", i, ret);
kfree(read_buff);