3.2.56-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nik...@intel.com>
commit 04eada25d1f72efdecd32d702706594f81de65d5 upstream.
Give more slack to sink devices before retrying on native aux
defer. AFAICT the 100 us timeout was not based on the DP spec.
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/gpu/drm/i915/intel_dp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -500,7 +500,7 @@ intel_dp_aux_native_write(struct intel_d
if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
break;
else if ((ack & AUX_NATIVE_REPLY_MASK) ==
AUX_NATIVE_REPLY_DEFER)
- udelay(100);
+ usleep_range(400, 500);
else
return -EIO;
}
@@ -549,7 +549,7 @@ intel_dp_aux_native_read(struct intel_dp
return ret - 1;
}
else if ((ack & AUX_NATIVE_REPLY_MASK) ==
AUX_NATIVE_REPLY_DEFER)
- udelay(100);
+ usleep_range(400, 500);
else
return -EIO;
}
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