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From: Alexandre Courbot <acourbot@nvidia.com>
To: John Hubbard <jhubbard@nvidia.com>,
	Danilo Krummrich <dakr@kernel.org>,
	 Alice Ryhl <aliceryhl@google.com>,
	David Airlie <airlied@gmail.com>,
	 Simona Vetter <simona@ffwll.ch>,
	Benno Lossin <lossin@kernel.org>,  Gary Guo <gary@garyguo.net>
Cc: Alistair Popple <apopple@nvidia.com>,
	Timur Tabi <ttabi@nvidia.com>,
	 Eliot Courtney <ecourtney@nvidia.com>,
	Zhi Wang <zhiw@nvidia.com>,
	 nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org,
	 linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org,
	 Alexandre Courbot <acourbot@nvidia.com>
Subject: [PATCH v5 02/14] gpu: nova-core: gsp: cmdq: simplify framing error description
Date: Tue, 20 Oct 2026 19:08:23 +0900	[thread overview]
Message-ID: <20261020-cmdq-rpc-v5-2-dceeb8f360ec@nvidia.com> (raw)
In-Reply-To: <20261020-cmdq-rpc-v5-0-dceeb8f360ec@nvidia.com>

Use simpler and more precise language to explain the conditions in which
`EIO` is returned.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 drivers/gpu/nova-core/gsp/cmdq.rs | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/nova-core/gsp/cmdq.rs b/drivers/gpu/nova-core/gsp/cmdq.rs
index accfc1d20d28..1bd15fc0aef2 100644
--- a/drivers/gpu/nova-core/gsp/cmdq.rs
+++ b/drivers/gpu/nova-core/gsp/cmdq.rs
@@ -775,8 +775,7 @@ fn send_command<M>(&mut self, command: M) -> Result
     /// # Errors
     ///
     /// - `ETIMEDOUT` if `timeout` has elapsed before any message becomes available.
-    /// - `EIO` if there was some inconsistency (e.g. message shorter than advertised) on the
-    ///   message queue.
+    /// - `EIO` if a message fails framing or checksum validation.
     fn wait_for_msg(&self, timeout: Delta) -> Result<GspMessage<'_>> {
         // Wait for a message to arrive from the GSP.
         let (slice_1, slice_2) = read_poll_timeout(
@@ -849,8 +848,7 @@ fn wait_for_msg(&self, timeout: Delta) -> Result<GspMessage<'_>> {
     /// # Errors
     ///
     /// - `ETIMEDOUT` if `timeout` has elapsed before any message becomes available.
-    /// - `EIO` if there was some inconsistency (e.g. message shorter than advertised) on the
-    ///   message queue.
+    /// - `EIO` if a message fails framing or checksum validation.
     /// - `ENOMSG` if the message was not the awaited reply.
     ///
     /// Error codes returned by [`MessageFromGsp::read`] are propagated as-is.
@@ -902,7 +900,7 @@ fn receive_msg<M: MessageFromGsp>(&mut self, timeout: Delta) -> Result<M>
     ///
     /// - `ETIMEDOUT` if no message of type `M` arrives before the deadline, however many other
     ///   messages arrive while waiting.
-    /// - `EIO` if a message fails framing or checksum validation (see [`Self::wait_for_msg`]).
+    /// - `EIO` if a message fails framing or checksum validation.
     ///
     /// Error codes returned by [`MessageFromGsp::read`] are propagated as-is.
     fn await_msg<M: MessageFromGsp>(&mut self) -> Result<M>

-- 
2.56.0


  parent reply	other threads:[~2026-10-20 10:08 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-20 10:08 [PATCH v5 00/14] gpu: nova-core: gsp: prepare the command queue for r000 dual-message types Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 01/14] gpu: nova-core: gsp: cmdq: remove stale comment Alexandre Courbot
2026-10-20 11:43   ` Eliot Courtney
2026-10-20 10:08 ` Alexandre Courbot [this message]
2026-10-20 11:43   ` [PATCH v5 02/14] gpu: nova-core: gsp: cmdq: simplify framing error description Eliot Courtney
2026-10-20 10:08 ` [PATCH v5 03/14] gpu: nova-core: gsp: cmdq: validate checksum earlier on receive Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 04/14] gpu: nova-core: gsp: introduce and use proper RpcMessageHeader type Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 05/14] gpu: nova-core: gsp: cmdq: group the RPC-specific part of send_single_command Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 06/14] gpu: nova-core: gsp: cmdq: split the transport part of the send path Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 07/14] gpu: nova-core: gsp: cmdq: split RPC parsing part of the receive path Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 08/14] gpu: nova-core: gsp: cmdq: move RPC message logging to RpcMessage Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 09/14] gpu: nova-core: gsp: cmdq: split the transport part of the receive path Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 10/14] gpu: nova-core: gsp: cmdq: extract await_msg_with from await_msg Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 11/14] gpu: nova-core: gsp: cmdq: use consume_element to implement drain Alexandre Courbot
2026-10-20 10:18   ` sashiko-bot
2026-10-20 14:27     ` Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 12/14] gpu: nova-core: gsp: cmdq: move the RPC code into a sub-module Alexandre Courbot
2026-10-20 10:15   ` sashiko-bot
2026-10-20 10:08 ` [PATCH v5 13/14] gpu: nova-core: gsp: move the RPC commands " Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 14/14] gpu: nova-core: gsp: add `rpc` to RPC message send/receive methods Alexandre Courbot

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