From fa47573b04a35078953be5f81a78f22c96358817 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 8 Sep 2022 11:51:15 +0200 Subject: drm/udl: Sync pending URBs at the end of suspend It's better to perform the sync at the very last of the suspend instead of the pipe-disable function, so that we can catch all pending URBs (if any). While we're at it, drop the error code from udl_sync_pending_urb() since we basically ignore it; instead, give a clear error message indicating a problem. Acked-by: Thomas Zimmermann Signed-off-by: Takashi Iwai Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20220908095115.23396-13-tiwai@suse.de --- drivers/gpu/drm/udl/udl_drv.c | 8 +++++++- drivers/gpu/drm/udl/udl_drv.h | 2 +- drivers/gpu/drm/udl/udl_main.c | 6 ++---- drivers/gpu/drm/udl/udl_modeset.c | 2 -- 4 files changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 0ba88e5472a9..91effdcefb6d 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -21,8 +21,14 @@ static int udl_usb_suspend(struct usb_interface *interface, pm_message_t message) { struct drm_device *dev = usb_get_intfdata(interface); + int ret; - return drm_mode_config_helper_suspend(dev); + ret = drm_mode_config_helper_suspend(dev); + if (ret) + return ret; + + udl_sync_pending_urbs(dev); + return 0; } static int udl_usb_resume(struct usb_interface *interface) diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index d943684b5bbb..b4cc7cc568c7 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -77,7 +77,7 @@ struct drm_connector *udl_connector_init(struct drm_device *dev); struct urb *udl_get_urb(struct drm_device *dev); int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len); -int udl_sync_pending_urbs(struct drm_device *dev); +void udl_sync_pending_urbs(struct drm_device *dev); void udl_urb_completion(struct urb *urb); int udl_init(struct udl_device *udl); diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index 829edb60a987..061cb88c08a2 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -290,10 +290,9 @@ int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len) } /* wait until all pending URBs have been processed */ -int udl_sync_pending_urbs(struct drm_device *dev) +void udl_sync_pending_urbs(struct drm_device *dev) { struct udl_device *udl = to_udl(dev); - int ret = 0; spin_lock_irq(&udl->urbs.lock); /* 2 seconds as a sane timeout */ @@ -301,9 +300,8 @@ int udl_sync_pending_urbs(struct drm_device *dev) udl->urbs.available == udl->urbs.count, udl->urbs.lock, msecs_to_jiffies(2000))) - ret = -ETIMEDOUT; + drm_err(dev, "Timeout for syncing pending URBs\n"); spin_unlock_irq(&udl->urbs.lock); - return ret; } int udl_init(struct udl_device *udl) diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c index d5e20bf144bc..ec6876f449f3 100644 --- a/drivers/gpu/drm/udl/udl_modeset.c +++ b/drivers/gpu/drm/udl/udl_modeset.c @@ -377,8 +377,6 @@ udl_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe) buf = udl_dummy_render(buf); udl_submit_urb(dev, urb, buf - (char *)urb->transfer_buffer); - - udl_sync_pending_urbs(dev); } static void -- cgit v1.2.3