diff options
| author | Colin Ian King <colin.king@canonical.com> | 2017-06-22 17:34:49 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-06-23 12:26:38 +0100 |
| commit | a2f07d38d6981ed220d86b7df07e4ac6a1734443 (patch) | |
| tree | 2018ad9bac2d4fccb138c3547ee98dbaf2cec65c /drivers/spi | |
| parent | dcbe0d84dfa5a3e72b8e6ce622cd5ac78abbcab8 (diff) | |
| download | linux-a2f07d38d6981ed220d86b7df07e4ac6a1734443.tar.gz linux-a2f07d38d6981ed220d86b7df07e4ac6a1734443.tar.bz2 linux-a2f07d38d6981ed220d86b7df07e4ac6a1734443.zip | |
spi: stm32: fix error check on mbr being -ve
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@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-stm32.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 0553f61ab3b7..305ecd5334fc 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) |