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| author | Bin Meng <bmeng.cn@gmail.com> | 2019-09-09 06:00:02 -0700 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2020-01-27 22:27:21 +0530 |
| commit | 7bacce524d48594dae399f9ee9280ab105f6c8cf (patch) | |
| tree | a9cdb8e947d511b199db7647361b272ea6262a27 /include | |
| parent | 383fded70c4f14370bc5525bdb9f547393876e31 (diff) | |
| download | u-boot-7bacce524d48594dae399f9ee9280ab105f6c8cf.tar.gz u-boot-7bacce524d48594dae399f9ee9280ab105f6c8cf.tar.bz2 u-boot-7bacce524d48594dae399f9ee9280ab105f6c8cf.zip | |
dm: spi: Check cs number before accessing slaves
Add chip select number check in spi_find_chip_select().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
Diffstat (limited to 'include')
| -rw-r--r-- | include/spi.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/spi.h b/include/spi.h index ba2c8406b2..18a0312f9f 100644 --- a/include/spi.h +++ b/include/spi.h @@ -561,7 +561,8 @@ int spi_chip_select(struct udevice *slave); * @bus: SPI bus to search * @cs: Chip select to look for * @devp: Returns the slave device if found - * @return 0 if found, -ENODEV on error + * @return 0 if found, -EINVAL if cs is invalid, -ENODEV if no device attached, + * other -ve value on error */ int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp); |