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drm/i915: Fix deadlock witha the pipe A quirk during resume 

Pass down the correct acquire context to the pipe A quirk load detect
hack during display resume. Avoids deadlocking the entire thing.

Cc: stable@vger.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: e2c8b8701e ("drm/i915: Use atomic helpers for suspend, v2.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170601143619.27840-2-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
(cherry picked from commit aecd36b8a1)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2017-06-01 17:36:13 +03:00 committed by Jani Nikula
parent ce2c58724f
commit 17b206c273
1 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/i915/intel_display.c
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@ -120,7 +120,8 @@ static void intel_crtc_init_scalers(struct intel_crtc *crtc,
static void skylake_pfit_enable(struct intel_crtc *crtc);
static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
static void ironlake_pfit_enable(struct intel_crtc *crtc);
static void intel_modeset_setup_hw_state(struct drm_device *dev);
static void intel_modeset_setup_hw_state(struct drm_device *dev,
struct drm_modeset_acquire_ctx *ctx);
static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc);
struct intel_limit {
@ -3449,7 +3450,7 @@ __intel_display_resume(struct drm_device *dev,
struct drm_crtc *crtc;
int i, ret;
intel_modeset_setup_hw_state(dev);
intel_modeset_setup_hw_state(dev, ctx);
i915_redisable_vga(to_i915(dev));
if (!state)
@ -15030,7 +15031,7 @@ int intel_modeset_init(struct drm_device *dev)
intel_setup_outputs(dev_priv);
drm_modeset_lock_all(dev);
intel_modeset_setup_hw_state(dev);
intel_modeset_setup_hw_state(dev, dev->mode_config.acquire_ctx);
drm_modeset_unlock_all(dev);
for_each_intel_crtc(dev, crtc) {
@ -15067,13 +15068,13 @@ int intel_modeset_init(struct drm_device *dev)
return 0;
}
static void intel_enable_pipe_a(struct drm_device *dev)
static void intel_enable_pipe_a(struct drm_device *dev,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_connector *connector;
struct drm_connector_list_iter conn_iter;
struct drm_connector *crt = NULL;
struct intel_load_detect_pipe load_detect_temp;
struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
int ret;
/* We can't just switch on the pipe A, we need to set things up with a
@ -15145,7 +15146,8 @@ static bool has_pch_trancoder(struct drm_i915_private *dev_priv,
(HAS_PCH_LPT_H(dev_priv) && pch_transcoder == TRANSCODER_A);
}
static void intel_sanitize_crtc(struct intel_crtc *crtc)
static void intel_sanitize_crtc(struct intel_crtc *crtc,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
@ -15201,7 +15203,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc)
* resume. Force-enable the pipe to fix this, the update_dpms
* call below we restore the pipe to the right state, but leave
* the required bits on. */
intel_enable_pipe_a(dev);
intel_enable_pipe_a(dev, ctx);
}
/* Adjust the state of the output pipe according to whether we
@ -15505,7 +15507,8 @@ get_encoder_power_domains(struct drm_i915_private *dev_priv)
* and sanitizes it to the current state
*/
static void
intel_modeset_setup_hw_state(struct drm_device *dev)
intel_modeset_setup_hw_state(struct drm_device *dev,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe;
@ -15525,7 +15528,7 @@ intel_modeset_setup_hw_state(struct drm_device *dev)
for_each_pipe(dev_priv, pipe) {
crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
intel_sanitize_crtc(crtc);
intel_sanitize_crtc(crtc, ctx);
intel_dump_pipe_config(crtc, crtc->config,
"[setup_hw_state]");
}