From: Jani Nikula <jani.nikula@intel.com>
To: Mika Kuoppala <mika.kuoppala@linux.intel.com>,
intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Don't read dpcd for disconnected ports
Date: Mon, 04 May 2015 11:46:20 +0300 [thread overview]
Message-ID: <87d22g91cz.fsf@intel.com> (raw)
In-Reply-To: <1429600829-2958-1-git-send-email-mika.kuoppala@intel.com>
On Tue, 21 Apr 2015, Mika Kuoppala <mika.kuoppala@linux.intel.com> wrote:
> Reading from disconnected ports will spit out timeout error
> on the dmesg. Skip the attempted read if the port is not
> connected and avoid confusing users/testcases about
> expected timeouts.
>
> This new dpcd debugfs entry was introduced by commit aa7471d228eb
> ("drm/i915: add i915 specific connector debugfs file for DPCD")
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90060
> Tested-by: yex.tian@intel.com
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Bob Paauwe <bob.j.paauwe@intel.com>
> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 9c2b9e4..fbc1f39 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -4938,6 +4938,9 @@ static int i915_dpcd_show(struct seq_file *m, void *data)
> connector->connector_type != DRM_MODE_CONNECTOR_eDP)
> continue;
>
> + if (connector->status != connector_status_connected)
> + continue;
The loop isn't iterating over connectors, so this check should be at the
top of the function.
BR,
Jani.
> +
> /* low tech for now */
> if (WARN_ON(size > sizeof(buf)))
> continue;
> --
> 1.9.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Jani Nikula, Intel Open Source Technology Center
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next prev parent reply other threads:[~2015-05-04 8:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-21 7:20 [PATCH] drm/i915: Don't read dpcd for disconnected ports Mika Kuoppala
2015-04-21 12:24 ` shuang.he
2015-05-04 8:46 ` Jani Nikula [this message]
2015-05-15 10:09 ` [PATCH v2] " Jani Nikula
2015-05-18 6:28 ` shuang.he
2015-05-18 7:00 ` Daniel Vetter
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