[PATCH 2/3] spi: stm32: qspi: Clamp stm32_qspi_get_mode() output to CCR_BUSWIDTH_4

[patrice.chotard at foss.st.com]

From: Patrice Chotard <patrice.chotard at foss.st.com>

In case usage of OCTAL mode, buswidth parameter can take the value 8.
As return value of stm32_qspi_get_mode() is used to configure fields
of CCR registers that are 2 bits only (fields IMODE, ADMODE, ADSIZE,
 DMODE), clamp return value of stm32_qspi_get_mode() to 4.

Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback")
Cc: stable at vger.kernel.org
Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---
 drivers/spi/spi-stm32-qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index 6944e85d8367..955c920c4b63 100644
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -349,7 +349,7 @@ static int stm32_qspi_wait_poll_status(struct stm32_qspi *qspi)
 
 static int stm32_qspi_get_mode(u8 buswidth)
 {
-	if (buswidth == 4)
+	if (buswidth >= 4)
 		return CCR_BUSWIDTH_4;
 
 	return buswidth;
-- 
2.25.1