From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
The error check of mbr < 0 is always false because mbr is a u32. Make
mbt an int so that a -ve error return from stm32_spi_prepare_mbr can be
detected.
Detected by CoverityScan, CID#1446586 ("Unsigned compared against 0")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/spi/spi-stm32.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index b75909e7b117..82a6616f46b8 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -857,7 +857,7 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
}
if (spi->cur_speed != transfer->speed_hz) {
- u32 mbr;
+ int mbr;
/* Update spi->cur_speed with real clock speed */
mbr = stm32_spi_prepare_mbr(spi, transfer->speed_hz);
@@ -869,7 +869,7 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
transfer->speed_hz = spi->cur_speed;
cfg1_clrb |= SPI_CFG1_MBR;
- cfg1_setb |= (mbr << SPI_CFG1_MBR_SHIFT) & SPI_CFG1_MBR;
+ cfg1_setb |= ((u32)mbr << SPI_CFG1_MBR_SHIFT) & SPI_CFG1_MBR;
}
if (cfg1_clrb || cfg1_setb)
--
2.11.0
--
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