[PATCH -next] i2c: stm32: fix the return value handle for platform_get_irq()
Ruan Jinjie
ruanjinjie at huawei.com
Tue Aug 1 18:28:34 PDT 2023
On 2023/8/2 7:52, Andi Shyti wrote:
> Hi Ruan,
>
> Just a nitpick here that does not affect my r-b...
>
>> On Mon, Jul 31, 2023 at 07:27:55PM +0800, Ruan Jinjie wrote:
>>> There is no possible for platform_get_irq() to return 0,
>>> and the return value of platform_get_irq() is more sensible
>>> to show the error reason.
>
> can we rephrase the whole commit to:
>
> i2c: stm32: Do not check for 0 return after calling platform_get_irq()
>
> It is not possible for platform_get_irq() to return 0. Use the
> return value from platform_get_irq().
>
> Two notes on the commit log:
>
> - Use capital letter after "i2c: stm32: Fix..."
> - This is not a fix, so that we shouldn't use the word "fix" in
> the title.
>
> just little notes for future patches :)
Thank you for your valuable advice! I will keep an eye out for these in
future patches.
>
> Thanks,
> Andi
>
>>> Signed-off-by: Ruan Jinjie <ruanjinjie at huawei.com>
>>> ---
>>> drivers/i2c/busses/i2c-stm32f7.c | 8 ++++----
>>> 1 file changed, 4 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
>>> index e897d9101434..579b30581725 100644
>>> --- a/drivers/i2c/busses/i2c-stm32f7.c
>>> +++ b/drivers/i2c/busses/i2c-stm32f7.c
>>> @@ -2121,12 +2121,12 @@ static int stm32f7_i2c_probe(struct platform_device *pdev)
>>> phy_addr = (dma_addr_t)res->start;
>>>
>>> irq_event = platform_get_irq(pdev, 0);
>>> - if (irq_event <= 0)
>>> - return irq_event ? : -ENOENT;
>>> + if (irq_event < 0)
>>> + return irq_event;
>>>
>>> irq_error = platform_get_irq(pdev, 1);
>>> - if (irq_error <= 0)
>>> - return irq_error ? : -ENOENT;
>>> + if (irq_error < 0)
>>> + return irq_error;
>>
>> Correct, from patch ce753ad1549cbe ("platform: finally disallow
>> IRQ0 in platform_get_irq() and its ilk") this check is already
>> done inside platform_get_irq();
>>
>> Reviewed-by: Andi Shyti <andi.shyti at kernel.org>
>>
>> Andi
>>
>>>
>>> i2c_dev->wakeup_src = of_property_read_bool(pdev->dev.of_node,
>>> "wakeup-source");
>>> --
>>> 2.34.1
>>>
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