Re: [patch 16/30] mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc

[Lee Jones]

On Thu, 10 Dec 2020, Thomas Gleixner wrote:

> First of all drivers have absolutely no business to dig into the internals
> of an irq descriptor. That's core code and subject to change. All of this
> information is readily available to /proc/interrupts in a safe and race
> free way.
> 
> Remove the inspection code which is a blatant violation of subsystem
> boundaries and racy against concurrent modifications of the interrupt
> descriptor.
> 
> Print the irq line instead so the information can be looked up in a sane
> way in /proc/interrupts.
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Cc: Lee Jones <lee.jones@xxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> ---
>  drivers/mfd/ab8500-debugfs.c |   16 +++-------------
>  1 file changed, 3 insertions(+), 13 deletions(-)

Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog