linux-kernel - Re: [PATCH 1/3] ARM: davinci: define gpio interrupts as separate resources

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Date:   Tue, 20 Nov 2018 02:22:02 +0530
From:   Sekhar Nori <nsekhar@...com>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Kevin Hilman <khilman@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Keerthy <j-keerthy@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Grygorii Strashko <grygorii.strashko@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        <stable@...r.kernel.org>
Subject: Re: [PATCH 1/3] ARM: davinci: define gpio interrupts as separate
 resources

On 13/11/18 7:20 PM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> Since commit eb3744a2dd01 ("gpio: davinci: Do not assume continuous
> IRQ numbering") the davinci GPIO driver fails to probe if we boot
> in legacy mode from any of the board files. Since the driver now
> expects every interrupt to be defined as a separate resource, split
> the definition in devices-da8xx.c instead of having a single continuous
> interrupt range.
> 
> Fixes: eb3744a2dd01 ("gpio: davinci: Do not assume continuous IRQ numbering")
> Cc: stable@...r.kernel.org
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>

There are a number of other boards that need such fixing too. And the
commit in question does not do a good job of explaining why it was
needed in the first place. The description  just repeats what can be
inferred by reading the patch.


    gpio: davinci: Do not assume continuous IRQ numbering

    Currently the driver assumes that the interrupts are continuous
    and does platform_get_irq only once and assumes the rest are continuous,
    instead call platform_get_irq for all the interrupts and store them
    in an array for later use.

    Signed-off-by: Keerthy <j-keerthy@...com>
    Reviewed-by: Grygorii Strashko <grygorii.strashko@...com>
    Signed-off-by: Linus Walleij <linus.walleij@...aro.org>


Can we revert the offending commit instead?

Thanks,
Sekhar