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

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Message-Id: <20211124115727.224831322@linuxfoundation.org>
Date:   Wed, 24 Nov 2021 12:58:53 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Johan Hovold <johan@...nel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: [PATCH 5.15 246/279] drm/udl: fix control-message timeout

From: Johan Hovold <johan@...nel.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@...r.kernel.org      # 3.4
Signed-off-by: Johan Hovold <johan@...nel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@...ll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025115353.5089-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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);