From: Alex Deucher Date: Fri, 15 May 2015 15:48:52 +0000 (-0400) Subject: drm/radeon: take the mode_config mutex when dealing with hpds (v2) X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d2996f66a49aa58efe057c91d4d5bc3fa6d2af0f;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git drm/radeon: take the mode_config mutex when dealing with hpds (v2) commit 39fa10f7e21574a70cecf1fed0f9b36535aa68a0 upstream. Since we are messing with state in the worker. v2: drop the changes in the mst worker Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 1fe12ab5c5ea..db83d075606e 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -73,10 +73,12 @@ static void radeon_hotplug_work_func(struct work_struct *work) struct drm_mode_config *mode_config = &dev->mode_config; struct drm_connector *connector; + mutex_lock(&mode_config->mutex); if (mode_config->num_connector) { list_for_each_entry(connector, &mode_config->connector_list, head) radeon_connector_hotplug(connector); } + mutex_unlock(&mode_config->mutex); /* Just fire off a uevent and let userspace tell us what to do */ drm_helper_hpd_irq_event(dev); }