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drm/udl: Fixed problem with UDL adpater reconnection

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Fixed problem with DisplayLink and DisplayLink certified adapers in drm/udl
driver when adapter doesn't want to work if it was initialized with
disconnected DVI cable by enabling drm connectot polling and updating
current connector's state.

Signed-off-by: Robert Tarasov <tutankhamen@chromium.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171013001350.172155-1-tutankhamen@chromium.org
This commit is contained in:
Robert Tarasov
2017-10-12 17:13:49 -07:00
committed by Alex Deucher
parent a52ff2a509
commit afdfc4c6f5
4 changed files with 71 additions and 25 deletions
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5
drivers/gpu/drm/udl/udl_main.c
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@@ -11,6 +11,7 @@
* more details.
*/
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include "udl_drv.h"
/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
@@ -350,6 +351,8 @@ int udl_driver_load(struct drm_device *dev, unsigned long flags)
if (ret)
goto err_fb;
drm_kms_helper_poll_init(dev);
return 0;
err_fb:
udl_fbdev_cleanup(dev);
@@ -371,6 +374,8 @@ void udl_driver_unload(struct drm_device *dev)
{
struct udl_device *udl = dev->dev_private;
drm_kms_helper_poll_fini(dev);
if (udl->urbs.count)
udl_free_urb_list(dev);