Thread (252 messages) 252 messages, 6 authors, 2021-07-21
STALE1787d

[PATCH 4.9 031/245] spi: omap-100k: Fix the length judgment problem

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-19 15:12:22
Also in: lkml
Subsystem: spi subsystem, the rest · Maintainers: Mark Brown, Linus Torvalds

From: Tian Tao <tiantao6@hisilicon.com>

[ Upstream commit e7a1a3abea373e41ba7dfe0fbc93cb79b6a3a529 ]

word_len should be checked in the omap1_spi100k_setup_transfer
function to see if it exceeds 32.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1619695248-39045-1-git-send-email-tiantao6@hisilicon.com (local)
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-omap-100k.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c
index 1eccdc4a4581..2eeb0fe2eed2 100644
--- a/drivers/spi/spi-omap-100k.c
+++ b/drivers/spi/spi-omap-100k.c
@@ -251,7 +251,7 @@ static int omap1_spi100k_setup_transfer(struct spi_device *spi,
 	else
 		word_len = spi->bits_per_word;
 
-	if (spi->bits_per_word > 32)
+	if (word_len > 32)
 		return -EINVAL;
 	cs->word_len = word_len;
 
-- 
2.30.2


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