[PATCH] rtc: armada38x: make struct rtc_class_ops const

[Alexandre Belloni]

On 11/01/2017 at 10:16:58 +0000, Russell King wrote :
> Armada38x wants to modify its rtc_class_ops to remove the interrupt
> handling when there is no usable interrupt, but this means we leave
> function pointers in writable memory.
> 
> Since rtc_class_ops is small, arrange to have two instances, one for
> when we have interrupts, and one for when we have none, both marked
> const.  This allows the compiler to place them in read-only memory,
> which is better than placing them in __ro_after_init.
> 
> Thanks to Bhumika Goyal <bhumirks at gmail.com> for pointing out that
> the structure was writable and submitting a patch to add
> __ro_after_init.
> 
> Signed-off-by: Russell King <rmk+kernel at armlinux.org.uk>
> ---
> As the thread has gone quiet, I'm submitting the patch I sent within that
> thread.  No one appears to have raised an objection to it (other than what
> appears to be a misunderstanding.)
> 
>  drivers/rtc/rtc-armada38x.c | 24 +++++++++++++++++-------
>  1 file changed, 17 insertions(+), 7 deletions(-)
> 
Applied, thanks.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com