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| author | Mika Kuoppala | 2015-08-06 15:48:58 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2015-08-14 17:50:37 +0200 |
| commit | 02196c776ec67e05d3003926ba648bd2eab20e29 (patch) | |
| tree | 8ab4e3ae1145cce1385cd8d6b43a954c0e626831 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | drm/i915: Handle return value in intel_pin_and_fence_fb_obj, v2. (diff) | |
| download | kernel-qcow2-linux-02196c776ec67e05d3003926ba648bd2eab20e29.tar.gz kernel-qcow2-linux-02196c776ec67e05d3003926ba648bd2eab20e29.tar.xz kernel-qcow2-linux-02196c776ec67e05d3003926ba648bd2eab20e29.zip | |
drm/i915: Spam less on dp aux send/receive problems
If we encounter frequent problems with dp aux channel
communications, we end up spamming the dmesg with the
exact similar trace and status.
Inject a new backtrace only if we have new information
to share as otherwise we flush out all other important
stuff.
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 4b5c6a88fd90..7eabd1175a07 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -849,8 +849,15 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, } if (try == 3) { - WARN(1, "dp_aux_ch not started status 0x%08x\n", - I915_READ(ch_ctl)); + static u32 last_status = -1; + const u32 status = I915_READ(ch_ctl); + + if (status != last_status) { + WARN(1, "dp_aux_ch not started status 0x%08x\n", + status); + last_status = status; + } + ret = -EBUSY; goto out; } |