drm/udl: Kill pending URBs at suspend and disconnect
At both suspend and disconnect, we should rather cancel the pending URBs immediately. For the suspend case, the display will be turned off, so it makes no sense to process the rendering. And for the disconnect case, the device may be no longer accessible, hence we shouldn't do any submission. Tested-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220804075826.27036-4-tiwai@suse.de
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