Re: [PATCH 10/10] drivers: misc: use module_platform_driver_probe()

From: Arnd Bergmann
Date: Thu Mar 14 2013 - 09:58:32 EST

On Thursday 14 March 2013, Fabio Porcedda wrote:
> This patch converts the drivers to use the
> module_platform_driver_probe() macro which makes the code smaller and
> a bit simpler.
> Signed-off-by: Fabio Porcedda <fabio.porcedda@xxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> drivers/misc/atmel_pwm.c | 12 +-----------
> drivers/misc/ep93xx_pwm.c | 13 +------------
> 2 files changed, 2 insertions(+), 23 deletions(-)

The patch itself seems fine, but there are two issues around it:

* The PWM drivers should really get moved to drivers/pwm and converted to the new
PWM subsystem. I don't know if Hartley or Hans-Christian have plans to do
that already.

* Regarding the use of module_platform_driver_probe, I'm a little worried about
the interactions with deferred probing. I don't think there are any regressions,
but we should probably make people aware that one cannot return -EPROBE_DEFER
from a platform_driver_probe function.

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