[PATCH] pinctrl or i2c-s3c2410: fix pinctrl NULL return values in stubs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

while implementing devicetree support for the s3c2416 I noticed a fault
in the i2c-s3c2410 driver. The s3c2416 does not support pinctrl at the
moment (and will probably for a while), so the fallback functions in
pinctrl/consumer.h were used. These functions fail silently and the
relevant pinctrl_get only returns NULL but the i2c driver only checked
for real error-pointers. This resulted in the i2c gpios not getting
configured at all.

There are of course two possible solutions. Check for NULL pinctrl
handles in the driver or return meaningful error codes in the pinctrl
stubs. All other pinctrl drivers also only seem to handle real error
codes and would gladly accept NULL handles, so I'm not sure which is
the correct fix to not break to much existing code.

Therefore I implemented both variants and you get to pick :-) .
This of course means from the following patches only one is necessary.


Heiko
--
To unsubscribe from this list: send the line "unsubscribe linux-i2c" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux GPIO]     [Linux SPI]     [Linux Hardward Monitoring]     [LM Sensors]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux