From: Tang Bin <tangbin@cmss.chinamobile.com>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: wsa@the-dreams.de, o.rempel@pengutronix.de, ardb@kernel.org,
linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c: drivers: Avoid unnecessary check inefm32_i2c_probe()
Date: Thu, 16 Apr 2020 09:30:22 +0800 [thread overview]
Message-ID: <20cc01b8-2661-7b3e-3dbc-38f7e282679b@cmss.chinamobile.com> (raw)
In-Reply-To: <20200415143133.qwbes5whbqx5jf2j@pengutronix.de>
Hi Uwe:
On 2020/4/15 22:31, Uwe Kleine-König wrote:
> Same things apply as in the previous patch. (space after punctuation,
> Sob of sender should be last)
I will notice this problem next time, thanks.
>> ---
>> drivers/i2c/busses/i2c-efm32.c | 3 ---
>> 1 file changed, 3 deletions(-)
>>
>> diff --git a/drivers/i2c/busses/i2c-efm32.c b/drivers/i2c/busses/i2c-efm32.c
>> index 4de31fae7..4786ef6b2 100644
>> --- a/drivers/i2c/busses/i2c-efm32.c
>> +++ b/drivers/i2c/busses/i2c-efm32.c
>> @@ -312,9 +312,6 @@ static int efm32_i2c_probe(struct platform_device *pdev)
>> int ret;
>> u32 clkdiv;
>>
>> - if (!np)
>> - return -EINVAL;
>> -
> I don't care much about this change. While the statement that this
> driver is only instantiated on dt platforms is probably right,
> explicitly checking for it might still prevent surprises later, serves
> as explicit statement for the driver reader that non-dt isn't supposed
> to work and given that the check is cheap I tend slightly to just keep
> it.
>
In this driver, the function efm32_i2c_probe() can be triggered only if
the platform_device and platform_driver matches, and the matching
condition is DTS. It's my opinion.
Tnanks,
Tang Bin
next prev parent reply other threads:[~2020-04-16 1:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 14:06 [PATCH] i2c: drivers: Avoid unnecessary check in efm32_i2c_probe() Tang Bin
2020-04-15 14:31 ` Uwe Kleine-König
2020-04-16 1:30 ` Tang Bin [this message]
2020-04-16 6:50 ` [PATCH] i2c: drivers: Avoid unnecessary check inefm32_i2c_probe() Uwe Kleine-König
2020-04-16 9:00 ` Tang Bin
2020-05-22 15:07 ` [PATCH] i2c: drivers: Avoid unnecessary check in efm32_i2c_probe() Wolfram Sang
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