6.9-stable review patch. If anyone has any objections, please let me know.
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From: David Lechner dlechner@baylibre.com
[ Upstream commit c86a918b1bdba78fb155184f8d88dfba1e63335d ]
Calling spi_maybe_unoptimize_message() in spi_async() is wrong because the message is likely to be in the queue and not transferred yet. This can corrupt the message while it is being used by the controller driver.
spi_maybe_unoptimize_message() is already called in the correct place in spi_finalize_current_message() to balance the call to spi_maybe_optimize_message() in spi_async().
Fixes: 7b1d87af14d9 ("spi: add spi_optimize_message() APIs") Signed-off-by: David Lechner dlechner@baylibre.com Link: https://patch.msgid.link/20240708-spi-mux-fix-v1-1-6c8845193128@baylibre.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index c349d6012625a..a1958e86f75c8 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -4423,8 +4423,6 @@ int spi_async(struct spi_device *spi, struct spi_message *message)
spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags);
- spi_maybe_unoptimize_message(message); - return ret; } EXPORT_SYMBOL_GPL(spi_async);