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authorNoralf Trønnes <noralf@tronnes.org>2019-04-01 17:13:58 +0300
committerNoralf Trønnes <noralf@tronnes.org>2019-04-03 12:11:47 +0300
commit6e3f17ee73f7e3c2ef0e2c8fd8624b2ece8ef2c9 (patch)
treeac1f17457078f45852ed2faf9ad8f167417360f4 /drivers/gpu/drm/drm_fb_helper.c
parentd7f9b83913f12b918906b8c1f4a4b90b5f4347d3 (diff)
downloadlinux-6e3f17ee73f7e3c2ef0e2c8fd8624b2ece8ef2c9.tar.xz
drm/fb-helper: generic: Call drm_client_add() after setup is done
Hotplug can happen while drm_fbdev_generic_setup() is running so move drm_client_add() call after setup is done to avoid drm_fbdev_client_hotplug() running in two threads at the same time. Fixes: 9060d7f49376 ("drm/fb-helper: Finish the generic fbdev emulation") Cc: stable@vger.kernel.org Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20190401141358.25309-1-noralf@tronnes.org
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
-rw-r--r--drivers/gpu/drm/drm_fb_helper.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 0d8384e30e16..84791dd4a90d 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -3312,8 +3312,6 @@ int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
return ret;
}
- drm_client_add(&fb_helper->client);
-
if (!preferred_bpp)
preferred_bpp = dev->mode_config.preferred_depth;
if (!preferred_bpp)
@@ -3324,6 +3322,8 @@ int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
if (ret)
DRM_DEV_DEBUG(dev->dev, "client hotplug ret=%d\n", ret);
+ drm_client_add(&fb_helper->client);
+
return 0;
}
EXPORT_SYMBOL(drm_fbdev_generic_setup);