linux-kernel - Re: [PATCH] mmc: usdhi6rol0: Handle return value of platform_get_irq

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Message-ID: <65b32c21-bdba-3038-b37f-747663017c5c@gmail.com>
Date:   Mon, 27 Nov 2017 15:04:59 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH] mmc: usdhi6rol0: Handle return value of
 platform_get_irq_byname for card detect

Hi,


On Monday 27 November 2017 03:01 PM, Ulf Hansson wrote:
> On 17 November 2017 at 17:35, Arvind Yadav <arvind.yadav.cs@...il.com> wrote:
>> platform_get_irq_byname() can fail here and we must check its return value.
> NAK.
>
> You need to check the code more carefully. irq_cd is dealt with later
> below in the same function with proper error handling.
Yes, your are right. Sorry for noise.
>> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
>> ---
>>   drivers/mmc/host/usdhi6rol0.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
>> index cdfeb15..5a896de 100644
>> --- a/drivers/mmc/host/usdhi6rol0.c
>> +++ b/drivers/mmc/host/usdhi6rol0.c
>> @@ -1749,7 +1749,7 @@ static int usdhi6_probe(struct platform_device *pdev)
>>          irq_cd = platform_get_irq_byname(pdev, "card detect");
>>          irq_sd = platform_get_irq_byname(pdev, "data");
>>          irq_sdio = platform_get_irq_byname(pdev, "SDIO");
>> -       if (irq_sd < 0 || irq_sdio < 0)
>> +       if (irq_cd < 0 || irq_sd < 0 || irq_sdio < 0)
>>                  return -ENODEV;
>>
>>          mmc = mmc_alloc_host(sizeof(struct usdhi6_host), dev);
>> --
>> 2.7.4
>>
~arvind