linux-kernel - [PATCH] drm/udl: fix control-message timeout

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Message-Id: <20211025115353.5089-1-johan@kernel.org>
Date:   Mon, 25 Oct 2021 13:53:53 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Dave Airlie <airlied@...hat.com>
Cc:     Sean Paul <sean@...rly.run>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, Johan Hovold <johan@...nel.org>,
        stable@...r.kernel.org
Subject: [PATCH] drm/udl: fix control-message timeout

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@...r.kernel.org      # 3.4
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/gpu/drm/udl/udl_connector.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c
index 3750fd216131..930574ad2bca 100644
--- 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, u8 *buf, unsigned int block,
 		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);
-- 
2.32.0