diff options
Diffstat (limited to 'meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0386-drm-amd-display-fix-resume-hang-because-of-DP-short-.patch')
| -rw-r--r-- | meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0386-drm-amd-display-fix-resume-hang-because-of-DP-short-.patch | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0386-drm-amd-display-fix-resume-hang-because-of-DP-short-.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0386-drm-amd-display-fix-resume-hang-because-of-DP-short-.patch deleted file mode 100644 index bb57c64c..00000000 --- a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0386-drm-amd-display-fix-resume-hang-because-of-DP-short-.patch +++ /dev/null @@ -1,47 +0,0 @@ -From e17c149dea726f93d995fd84648cac1fb4713538 Mon Sep 17 00:00:00 2001 -From: Arindam Nath <arindam.nath@amd.com> -Date: Wed, 26 Apr 2017 17:39:56 +0530 -Subject: [PATCH 0386/4131] drm/amd/display: fix resume hang because of DP - short pulse - -There is a hard hang observed during resume from S3 when -the system receives a DP short pulse interrupt. This is -because there are two code paths contending for GPIO -access for AUX channel transactions. One such path is -through amdgpu_dm_display_resume() function which is -invoked from the regular system resume code path. The -other path is through handle_hpd_rx_irq(), which is -invoked in response to system receiving DP short pulse -interrupt. handle_hpd_rx_irq() guards against conflicting -GPIO access using hpd_lock, but the GPIO access from -amdgpu_dm_display_resume() remains unguarded. - -This patch makes sure we use hpd_lock inside -amdgpu_dm_display_resume() to avoid race conditions -for GPIO access. - -Signed-off-by: Arindam Nath <arindam.nath@amd.com> -Signed-off-by: Alex Deucher <alexander.deucher@amd.com> ---- - drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++ - 1 file changed, 2 insertions(+) - -diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c -index 2ae541c..6d61766 100644 ---- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c -+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c -@@ -580,9 +580,11 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev ) - if (aconnector->mst_port) - continue; - -+ mutex_lock(&aconnector->hpd_lock); - dc_link_detect(aconnector->dc_link, false); - aconnector->dc_sink = NULL; - amdgpu_dm_update_connector_after_detect(aconnector); -+ mutex_unlock(&aconnector->hpd_lock); - } - - /* Force mode set in atomic comit */ --- -2.7.4 - |