This is a note to let you know that I've just added the patch titled drm/udl: fix control-message timeout to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-udl-fix-control-message-timeout.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 5591c8f79db1729d9c5ac7f5b4d3a5c26e262d93 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Mon, 25 Oct 2021 13:53:53 +0200 Subject: drm/udl: fix control-message timeout From: Johan Hovold <johan@xxxxxxxxxx> 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@xxxxxxxxxxxxxxx # 3.4 Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20211025115353.5089-1-johan@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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); Patches currently in stable-queue which might be from johan@xxxxxxxxxx are queue-5.15/drm-udl-fix-control-message-timeout.patch