Re: [PATCH v2] drm/msm/dp: check core_initialized before disable interrupts at dp_display_unbind()
On 06/06/2022 20:55, Kuogee Hsieh wrote:
During msm initialize phase, dp_display_unbind() will be called to undo
initializations had been done by dp_display_bind() previously if there is
error happen at msm_drm_bind. In this case, core_initialized flag had to
be check to make sure clocks is on before update DP controller register
to disable HPD interrupts. Otherwise system will crash due to below NOC
fatal error.
QTISECLIB [01f01a7ad]CNOC2 ERROR: ERRLOG0_LOW = 0x00061007
QTISECLIB [01f01a7ad]GEM_NOC ERROR: ERRLOG0_LOW = 0x1007
QTISECLIB [01f0371a0]CNOC2 ERROR: ERRLOG0_HIGH = 0x0003
QTISECLIB [01f055297]GEM_NOC ERROR: ERRLOG0_HIGH = 0x0003
QTISECLIB [01f072beb]CNOC2 ERROR: ERRLOG1_LOW = 0x0024
QTISECLIB [01f0914b8]GEM_NOC ERROR: ERRLOG1_LOW = 0x0042
QTISECLIB [01f0ae639]CNOC2 ERROR: ERRLOG1_HIGH = 0x4002
QTISECLIB [01f0cc73f]GEM_NOC ERROR: ERRLOG1_HIGH = 0x4002
QTISECLIB [01f0ea092]CNOC2 ERROR: ERRLOG2_LOW = 0x0009020c
QTISECLIB [01f10895f]GEM_NOC ERROR: ERRLOG2_LOW = 0x0ae9020c
QTISECLIB [01f125ae1]CNOC2 ERROR: ERRLOG2_HIGH = 0x
QTISECLIB [01f143be7]GEM_NOC ERROR: ERRLOG2_HIGH = 0x
QTISECLIB [01f16153a]CNOC2 ERROR: ERRLOG3_LOW = 0x
QTISECLIB [01f17fe07]GEM_NOC ERROR: ERRLOG3_LOW = 0x
QTISECLIB [01f19cf89]CNOC2 ERROR: ERRLOG3_HIGH = 0x
QTISECLIB [01f1bb08e]GEM_NOC ERROR: ERRLOG3_HIGH = 0x
QTISECLIB [01f1d8a31]CNOC2 ERROR: SBM1 FAULTINSTATUS0_LOW = 0x0002
QTISECLIB [01f1f72a4]GEM_NOC ERROR: SBM0 FAULTINSTATUS0_LOW = 0x0001
QTISECLIB [01f21a217]CNOC3 ERROR: ERRLOG0_LOW = 0x0006
QTISECLIB [01f23dfd3]NOC error fatal
changes in v2:
-- drop the first patch (drm/msm: enable msm irq after all initializations are
done successfully at msm_drm_init()) since the problem had been fixed by other
patch
Fixes: a65c95ff88f2 ("drm/msm/dp: stop event kernel thread when DP unbind")
Please. Stop using commit IDs from the private git tree. I thought we
have stumbled upon this during the last cycle, thus we won't see rogue
commit IDs anymore. But I was wrong. I've got another complaint from
Stephen. I'm going to fix this one manually, but please make sure to
stop sending wrong Fixes tags in the future.
Generally I feel like this is a sign of an incorrect process on your
side. The patches should be developed and tested against one of upstream
trees (linux-next, msm-next or msm-next-lumag) and then backported to
your integration/backports/stable/whatever. Since today the
msm-next-lumag is included into the linux-next, so you can use
linux-next as a basis.
Signed-off-by: Kuogee Hsieh
---
drivers/gpu/drm/msm/dp/dp_display.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index da5c03a..2b72639 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -309,7 +309,8 @@ static void dp_display_unbind(struct device *dev, struct
device *master,
struct msm_drm_private *priv = dev_get_drvdata(master);
/* disable all HPD interrupts */
- dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false);
+ if (dp->core_initialized)
+ dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK,
false);
kthread_stop(dp->ev_tsk);
--
With best wishes
Dmitry
Re: [PATCH v2] drm/msm/dp: check core_initialized before disable interrupts at dp_display_unbind()
Quoting Kuogee Hsieh (2022-06-06 10:55:39)
> During msm initialize phase, dp_display_unbind() will be called to undo
> initializations had been done by dp_display_bind() previously if there is
> error happen at msm_drm_bind. In this case, core_initialized flag had to
> be check to make sure clocks is on before update DP controller register
> to disable HPD interrupts. Otherwise system will crash due to below NOC
> fatal error.
>
> QTISECLIB [01f01a7ad]CNOC2 ERROR: ERRLOG0_LOW = 0x00061007
> QTISECLIB [01f01a7ad]GEM_NOC ERROR: ERRLOG0_LOW = 0x1007
> QTISECLIB [01f0371a0]CNOC2 ERROR: ERRLOG0_HIGH = 0x0003
> QTISECLIB [01f055297]GEM_NOC ERROR: ERRLOG0_HIGH = 0x0003
> QTISECLIB [01f072beb]CNOC2 ERROR: ERRLOG1_LOW = 0x0024
> QTISECLIB [01f0914b8]GEM_NOC ERROR: ERRLOG1_LOW = 0x0042
> QTISECLIB [01f0ae639]CNOC2 ERROR: ERRLOG1_HIGH = 0x4002
> QTISECLIB [01f0cc73f]GEM_NOC ERROR: ERRLOG1_HIGH = 0x4002
> QTISECLIB [01f0ea092]CNOC2 ERROR: ERRLOG2_LOW = 0x0009020c
> QTISECLIB [01f10895f]GEM_NOC ERROR: ERRLOG2_LOW = 0x0ae9020c
> QTISECLIB [01f125ae1]CNOC2 ERROR: ERRLOG2_HIGH = 0x
> QTISECLIB [01f143be7]GEM_NOC ERROR: ERRLOG2_HIGH = 0x
> QTISECLIB [01f16153a]CNOC2 ERROR: ERRLOG3_LOW = 0x
> QTISECLIB [01f17fe07]GEM_NOC ERROR: ERRLOG3_LOW = 0x
> QTISECLIB [01f19cf89]CNOC2 ERROR: ERRLOG3_HIGH = 0x
> QTISECLIB [01f1bb08e]GEM_NOC ERROR: ERRLOG3_HIGH = 0x
> QTISECLIB [01f1d8a31]CNOC2 ERROR: SBM1 FAULTINSTATUS0_LOW = 0x0002
> QTISECLIB [01f1f72a4]GEM_NOC ERROR: SBM0 FAULTINSTATUS0_LOW = 0x0001
> QTISECLIB [01f21a217]CNOC3 ERROR: ERRLOG0_LOW = 0x0006
> QTISECLIB [01f23dfd3]NOC error fatal
Don't think this pile of lines really helps anyone, but OK.
>
> changes in v2:
> -- drop the first patch (drm/msm: enable msm irq after all initializations
> are done successfully at msm_drm_init()) since the problem had been fixed by
> other patch
>
> Fixes: a65c95ff88f2 ("drm/msm/dp: stop event kernel thread when DP unbind")
> Signed-off-by: Kuogee Hsieh
> ---
Reviewed-by: Stephen Boyd
[PATCH v2] drm/msm/dp: check core_initialized before disable interrupts at dp_display_unbind()
During msm initialize phase, dp_display_unbind() will be called to undo
initializations had been done by dp_display_bind() previously if there is
error happen at msm_drm_bind. In this case, core_initialized flag had to
be check to make sure clocks is on before update DP controller register
to disable HPD interrupts. Otherwise system will crash due to below NOC
fatal error.
QTISECLIB [01f01a7ad]CNOC2 ERROR: ERRLOG0_LOW = 0x00061007
QTISECLIB [01f01a7ad]GEM_NOC ERROR: ERRLOG0_LOW = 0x1007
QTISECLIB [01f0371a0]CNOC2 ERROR: ERRLOG0_HIGH = 0x0003
QTISECLIB [01f055297]GEM_NOC ERROR: ERRLOG0_HIGH = 0x0003
QTISECLIB [01f072beb]CNOC2 ERROR: ERRLOG1_LOW = 0x0024
QTISECLIB [01f0914b8]GEM_NOC ERROR: ERRLOG1_LOW = 0x0042
QTISECLIB [01f0ae639]CNOC2 ERROR: ERRLOG1_HIGH = 0x4002
QTISECLIB [01f0cc73f]GEM_NOC ERROR: ERRLOG1_HIGH = 0x4002
QTISECLIB [01f0ea092]CNOC2 ERROR: ERRLOG2_LOW = 0x0009020c
QTISECLIB [01f10895f]GEM_NOC ERROR: ERRLOG2_LOW = 0x0ae9020c
QTISECLIB [01f125ae1]CNOC2 ERROR: ERRLOG2_HIGH = 0x
QTISECLIB [01f143be7]GEM_NOC ERROR: ERRLOG2_HIGH = 0x
QTISECLIB [01f16153a]CNOC2 ERROR: ERRLOG3_LOW = 0x
QTISECLIB [01f17fe07]GEM_NOC ERROR: ERRLOG3_LOW = 0x
QTISECLIB [01f19cf89]CNOC2 ERROR: ERRLOG3_HIGH = 0x
QTISECLIB [01f1bb08e]GEM_NOC ERROR: ERRLOG3_HIGH = 0x
QTISECLIB [01f1d8a31]CNOC2 ERROR: SBM1 FAULTINSTATUS0_LOW = 0x0002
QTISECLIB [01f1f72a4]GEM_NOC ERROR: SBM0 FAULTINSTATUS0_LOW = 0x0001
QTISECLIB [01f21a217]CNOC3 ERROR: ERRLOG0_LOW = 0x0006
QTISECLIB [01f23dfd3]NOC error fatal
changes in v2:
-- drop the first patch (drm/msm: enable msm irq after all initializations are
done successfully at msm_drm_init()) since the problem had been fixed by other
patch
Fixes: a65c95ff88f2 ("drm/msm/dp: stop event kernel thread when DP unbind")
Signed-off-by: Kuogee Hsieh
---
drivers/gpu/drm/msm/dp/dp_display.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index da5c03a..2b72639 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -309,7 +309,8 @@ static void dp_display_unbind(struct device *dev, struct
device *master,
struct msm_drm_private *priv = dev_get_drvdata(master);
/* disable all HPD interrupts */
- dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false);
+ if (dp->core_initialized)
+ dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK,
false);
kthread_stop(dp->ev_tsk);
--
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