linux-kernel - [PATCH 6.8 141/715] spi: consolidate setting message->spi

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Message-ID: <20240324223455.1342824-142-sashal@kernel.org>
Date: Sun, 24 Mar 2024 18:25:20 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: David Lechner <dlechner@...libre.com>,
	Mark Brown <broonie@...nel.org>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.8 141/715] spi: consolidate setting message->spi

From: David Lechner <dlechner@...libre.com>

[ Upstream commit b204aa0f99cfe3c9d796ecfc0bc6f3f89585789e ]

Previously, __spi_sync() and __spi_async() set message->spi to the spi
device independently after calling __spi_validate(). __spi_validate()
also would conditionally set this if it needed to split the message
since it wasn't set yet.

Since both __spi_sync() and __spi_async() call __spi_validate(), we can
consolidate this into only setting message->spi once (unconditionally)
in __spi_validate(). This will also save any future callers of
__spi_validate() from also needing to set message->spi.

Signed-off-by: David Lechner <dlechner@...libre.com>
Link: https://msgid.link/r/20240123214946.2616786-1-dlechner@baylibre.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Stable-dep-of: c8bec3355f08 ("spi: move split xfers for CS_WORD emulation")
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index f2170f4b50775..8dfe635fffd63 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -4063,6 +4063,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 	if (list_empty(&message->transfers))
 		return -EINVAL;
 
+	message->spi = spi;
+
 	/*
 	 * If an SPI controller does not support toggling the CS line on each
 	 * transfer (indicated by the SPI_CS_WORD flag) or we are using a GPIO
@@ -4075,9 +4077,6 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 		size_t maxsize = BITS_TO_BYTES(spi->bits_per_word);
 		int ret;
 
-		/* spi_split_transfers_maxsize() requires message->spi */
-		message->spi = spi;
-
 		ret = spi_split_transfers_maxsize(ctlr, message, maxsize,
 						  GFP_KERNEL);
 		if (ret)
@@ -4214,8 +4213,6 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
 	if (!ctlr->transfer)
 		return -ENOTSUPP;
 
-	message->spi = spi;
-
 	SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_async);
 	SPI_STATISTICS_INCREMENT_FIELD(spi->pcpu_statistics, spi_async);
 
@@ -4395,8 +4392,6 @@ static int __spi_sync(struct spi_device *spi, struct spi_message *message)
 	if (status != 0)
 		return status;
 
-	message->spi = spi;
-
 	SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync);
 	SPI_STATISTICS_INCREMENT_FIELD(spi->pcpu_statistics, spi_sync);
 
-- 
2.43.0