From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Imre Deak <imre.deak@intel.com>
Cc: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
stable@vger.kernel.org
Subject: Re: [PATCH v2] drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read
Date: Mon, 19 May 2025 16:39:51 +0300 [thread overview]
Message-ID: <20250519133951.GD88033@black.fi.intel.com> (raw)
In-Reply-To: <20250519133417.1469181-1-imre.deak@intel.com>
On Mon, May 19, 2025 at 04:34:17PM +0300, Imre Deak wrote:
> Due to a problem in the iTBT DP-in adapter's firmware the sink on a TBT
> link may get disconnected inadvertently if the SINK_COUNT_ESI and the
> DP_LINK_SERVICE_IRQ_VECTOR_ESI0 registers are read in a single AUX
> transaction. Work around the issue by reading these registers in
> separate transactions.
>
> The issue affects MTL+ platforms and will be fixed in the DP-in adapter
> firmware, however releasing that firmware fix may take some time and is
> not guaranteed to be available for all systems. Based on this apply the
> workaround on affected platforms.
>
> See HSD #13013007775.
>
> v2: Cc'ing Mika Westerberg.
>
> Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13760
> Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14147
> Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
next prev parent reply other threads:[~2025-05-19 13:39 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-16 17:09 [PATCH] drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read Imre Deak
2025-05-16 17:43 ` ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
2025-05-16 18:10 ` ✗ i915.CI.BAT: failure " Patchwork
2025-05-16 18:35 ` ✓ CI.Patch_applied: success " Patchwork
2025-05-16 18:35 ` ✗ CI.checkpatch: warning " Patchwork
2025-05-16 18:36 ` ✓ CI.KUnit: success " Patchwork
2025-05-16 18:47 ` ✓ CI.Build: " Patchwork
2025-05-16 18:50 ` ✓ CI.Hooks: " Patchwork
2025-05-16 18:51 ` ✓ CI.checksparse: " Patchwork
2025-05-16 19:38 ` ✓ Xe.CI.BAT: " Patchwork
2025-05-17 22:28 ` ✗ Xe.CI.Full: failure " Patchwork
2025-05-19 13:34 ` [PATCH v2] " Imre Deak
2025-05-19 13:39 ` Mika Westerberg [this message]
2025-05-19 13:53 ` Jani Nikula
2025-05-19 13:55 ` Imre Deak
2025-05-19 13:56 ` ✓ CI.Patch_applied: success for drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read (rev2) Patchwork
2025-05-19 13:56 ` ✗ CI.checkpatch: warning " Patchwork
2025-05-19 13:57 ` ✓ CI.KUnit: success " Patchwork
2025-05-19 14:08 ` ✓ CI.Build: " Patchwork
2025-05-19 14:10 ` ✓ CI.Hooks: " Patchwork
2025-05-19 14:12 ` ✓ CI.checksparse: " Patchwork
2025-05-19 14:38 ` ✓ Xe.CI.BAT: " Patchwork
2025-05-19 14:47 ` ✗ Fi.CI.CHECKPATCH: warning " Patchwork
2025-05-19 15:29 ` ✓ i915.CI.BAT: success " Patchwork
2025-05-19 17:19 ` ✗ Xe.CI.Full: failure " Patchwork
2025-05-19 19:16 ` ✓ i915.CI.Full: success " Patchwork
2025-05-20 8:22 ` Imre Deak
2025-05-27 5:00 ` ✗ CI.Patch_applied: failure " Patchwork
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250519133951.GD88033@black.fi.intel.com \
--to=mika.westerberg@linux.intel.com \
--cc=imre.deak@intel.com \
--cc=intel-gfx@lists.freedesktop.org \
--cc=intel-xe@lists.freedesktop.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.