dm: spi: Change cs_info op to return -EINVAL for invalid cs num
We need distinguish the following two situations in various SPI APIs:
- given chip select num is invalid
- given chip select num is valid, but no device is attached
Currently -ENODEV is returned for both cases.
For the first case, it's more reasonable to return -EINVAL instead of
-ENODEV for invalid chip select numbers.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/spi/sandbox_spi.c b/drivers/spi/sandbox_spi.c
index 906401e..16473ec 100644
--- a/drivers/spi/sandbox_spi.c
+++ b/drivers/spi/sandbox_spi.c
@@ -117,7 +117,7 @@
{
/* Always allow activity on CS 0 */
if (cs >= 1)
- return -ENODEV;
+ return -EINVAL;
return 0;
}