diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-24 14:43:06 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-24 15:25:42 +0300 |
| commit | 754a76591b12c88f57ad8b4ca533a5c9566a1922 (patch) | |
| tree | db230b01ac8c79fd6ccd284e9bab42b6f4e3ad68 /drivers/gpu/drm/i915/intel_fbdev.c | |
| parent | 8d0e9bcb2b0cbc2d5c3668e1a445571b4b73317f (diff) | |
| download | linux-754a76591b12c88f57ad8b4ca533a5c9566a1922.tar.xz | |
drm/i915/fbdev: Stop repeating tile configuration on stagnation
If we cease making progress in finding matching outputs for a tiled
configuration, stop looping over the remaining unconfigured outputs.
v2: Use conn_seq (instead of pass) to only apply tile configuration on
first pass.
Fixes: b0ee9e7fa5b4 ("drm/fb: add support for tiled monitor configurations. (v2)")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: <stable@vger.kernel.org> # v3.19+
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170224114306.4400-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_fbdev.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fbdev.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index c404ab524ccc..82993a87654c 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -350,14 +350,13 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, bool *enabled, int width, int height) { struct drm_i915_private *dev_priv = to_i915(fb_helper->dev); - unsigned long conn_configured, mask; + unsigned long conn_configured, conn_seq, mask; unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG); int i, j; bool *save_enabled; bool fallback = true; int num_connectors_enabled = 0; int num_connectors_detected = 0; - int pass = 0; save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL); if (!save_enabled) @@ -367,6 +366,7 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, mask = GENMASK(count - 1, 0); conn_configured = 0; retry: + conn_seq = conn_configured; for (i = 0; i < count; i++) { struct drm_fb_helper_connector *fb_conn; struct drm_connector *connector; @@ -380,7 +380,7 @@ retry: if (conn_configured & BIT(i)) continue; - if (pass == 0 && !connector->has_tile) + if (conn_seq == 0 && !connector->has_tile) continue; if (connector->status == connector_status_connected) @@ -491,10 +491,8 @@ retry: conn_configured |= BIT(i); } - if ((conn_configured & mask) != mask) { - pass++; + if ((conn_configured & mask) != mask && conn_configured != conn_seq) goto retry; - } /* * If the BIOS didn't enable everything it could, fall back to have the |