gpio: cdev: EOPNOTSUPP when HTE unavailable

[PATCH v1 0/1] gpio: cdev: EOPNOTSUPP when HTE unavailable

Iván Ezequiel Rodriguez posted 1 patch 3 weeks, 4 days ago

Download series mbox

drivers/gpio/gpiolib-cdev.c | 2 ++
1 file changed, 2 insertions(+)

Expand all Fold all

[PATCH v1 0/1] gpio: cdev: EOPNOTSUPP when HTE unavailable

Posted by Iván Ezequiel Rodriguez 3 weeks, 4 days ago

Hi,

When CONFIG_HTE is enabled but hte_ts_get() returns -ENODEV (no HTE
provider for the line), gpiolib-cdev currently propagates -ENODEV to
userspace.

Map that to -EOPNOTSUPP so it matches the errno already returned when
CONFIG_HTE is disabled or GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE is
otherwise unsupported.

Base: v7.3-rc1

Tested: built with CONFIG_GPIOLIB=y, CONFIG_GPIO_CDEV=y, CONFIG_HTE=y.
QEMU smoke for the HTE ioctl path was skipped (no gpiochip0 in this
guest); the change is a one-line errno remap on the existing error
path.

Thanks,
Iván

Iván Ezequiel Rodriguez (1):
  gpio: cdev: return EOPNOTSUPP when HTE is unavailable

 drivers/gpio/gpiolib-cdev.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
2.43.0