From: Ramalingam C <ramalingam.c@intel.com>
To: intel-gfx <intel-gfx@lists.freedesktop.org>,
dri-devel <dri-devel@lists.freedesktop.org>
Subject: [Intel-gfx] [PATCH v2 4/5] drm/i915: dont retry stream management at seq_num_m roll over
Date: Wed, 12 Feb 2020 15:59:41 +0530 [thread overview]
Message-ID: <20200212102942.26568-5-ramalingam.c@intel.com> (raw)
In-Reply-To: <20200212102942.26568-1-ramalingam.c@intel.com>
When roll over detected for seq_num_m, we shouldn't continue with stream
management with rolled over value.
So we are terminating the stream management retry, on roll over of the
seq_num_m.
v2:
using drm_dbg_kms instead of DRM_DEBUG_KMS [Anshuman]
v3:
dev_priv is used as i915 [JaniN]
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index b24d12efae0a..b35f50d4a0e9 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1419,11 +1419,6 @@ int _hdcp2_propagate_stream_management_info(struct intel_connector *connector)
err_exit:
hdcp->seq_num_m++;
- if (hdcp->seq_num_m > HDCP_2_2_SEQ_NUM_MAX) {
- DRM_DEBUG_KMS("seq_num_m roll over.\n");
- ret = -1;
- }
-
return ret;
}
@@ -1618,8 +1613,11 @@ hdcp2_propagate_stream_management_info(struct intel_connector *connector)
for (i = 0; i < tries; i++) {
ret = _hdcp2_propagate_stream_management_info(connector);
- if (!ret)
+ if (!ret || connector->hdcp.seq_num_m > HDCP_2_2_SEQ_NUM_MAX) {
+ if (connector->hdcp.seq_num_m > HDCP_2_2_SEQ_NUM_MAX)
+ drm_dbg_kms(&i915->drm, "seq_num_m roll over.\n");
break;
+ }
drm_dbg_kms(&i915->drm,
"HDCP2 stream management %d of %d Failed.(%d)\n",
--
2.20.1
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next prev parent reply other threads:[~2020-02-12 10:29 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 10:29 [Intel-gfx] [PATCH v2 0/5] HDCP misc Ramalingam C
2020-02-12 10:29 ` [Intel-gfx] [PATCH v2 1/5] drm/hdcp: optimizing the srm handling Ramalingam C
2020-02-18 15:43 ` Sean Paul
2020-02-12 10:29 ` [Intel-gfx] [PATCH v2 2/5] drm/hdcp: fix DRM_HDCP_2_KSV_COUNT_2_LSBITS Ramalingam C
2020-02-13 11:37 ` Anshuman Gupta
2020-02-12 10:29 ` [Intel-gfx] [PATCH v2 3/5] drm/i915: terminate reauth at stream management failure Ramalingam C
2020-02-13 8:51 ` Anshuman Gupta
2020-02-18 15:34 ` Sean Paul
2020-02-12 10:29 ` Ramalingam C [this message]
2020-02-13 10:37 ` [Intel-gfx] [PATCH v2 4/5] drm/i915: dont retry stream management at seq_num_m roll over Anshuman Gupta
2020-02-18 15:40 ` Sean Paul
2020-02-12 10:29 ` [Intel-gfx] [PATCH v2 5/5] drm/i915/hdcp: conversion to struct drm_device based logging macros Ramalingam C
2020-02-12 11:31 ` Jani Nikula
2020-02-12 11:39 ` Ramalingam C
2020-02-13 0:27 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for HDCP misc (rev2) Patchwork
2020-02-13 0:53 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-02-15 23:32 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2020-03-04 1:58 ` [Intel-gfx] [PATCH v2 0/5] HDCP misc Ramalingam C
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