linux-kernel - Re: [PATCH] sata

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Message-ID: <885d2384-79df-f2d4-0adc-5b6be48e1943@kernel.dk>
Date:   Tue, 30 Mar 2021 20:23:25 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Sergey Shtylyov <s.shtylyov@...russia.ru>,
        linux-ide@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sata_mv: add IRQ checks

On 3/27/21 3:13 PM, Sergey Shtylyov wrote:
> The function mv_platform_probe() neglects to check the results of the
> calls to platform_get_irq() and irq_of_parse_and_map() and blithely
> passes them to ata_host_activate() -- while the latter only checks
> for IRQ0 (treating it as a polling mode indicattion) and passes the
> negative values to devm_request_irq() causing it to fail as it takes
> unsigned values for the IRQ #...
> 
> Add to mv_platform_probe() the proper IRQ checks to pass the positive IRQ
> #s to ata_host_activate(), propagate upstream the negative error codes,
> and override the IRQ0 with -EINVAL (as we don't want the polling mode).

Applied, thanks.

-- 
Jens Axboe