tree 5cfaf76d93d54226979a751c4d232944d7c6b6db
parent ede4d7a5b9835510fd1f724367f68d2fa4128453
author Jon Hunter <jon-hunter@ti.com> 1362158568 -0600
committer Grant Likely <grant.likely@secretlab.ca> 1362532346 +0800

gpio/omap: warn if bank is not enabled on setting irq type

For OMAP devices, if a gpio is being used as an interrupt source but has
not been requested by calling gpio_request(), a call to request_irq()
may cause the kernel hang because the gpio bank may be disabled and
hence the register access will fail. To prevent such hangs, test for
this case and warn if this is detected.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>