linux-kernel - Re: [PATCH V4] drivers: i2c: tegra: fix checkpatch defects

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Date:   Thu, 6 Jun 2019 20:40:11 -0700
From:   Bitan Biswas <bbiswas@...dia.com>
To:     Peter Rosin <peda@...ntia.se>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Thierry Reding <treding@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Shardar Mohammed <smohammed@...dia.com>,
        Sowjanya Komatineni <skomatineni@...dia.com>,
        Mantravadi Karthik <mkarthik@...dia.com>
Subject: Re: [PATCH V4] drivers: i2c: tegra: fix checkpatch defects



On 6/6/19 1:45 PM, Peter Rosin wrote:
> On 2019-06-06 09:35, Bitan Biswas wrote:
>> Fix checkpatch.pl warning(s)/error(s)/check(s) in i2c-tegra.c
>>
>> Remove redundant BUG_ON calls or replace with WARN_ON_ONCE
>> as needed. Replace BUG() with error handling code.
>> Define I2C_ERR_UNEXPECTED_STATUS for error handling.
>>
>> Signed-off-by: Bitan Biswas <bbiswas@...dia.com>
>> ---
>>   drivers/i2c/busses/i2c-tegra.c | 67 +++++++++++++++++++++++-------------------
>>   1 file changed, 37 insertions(+), 30 deletions(-)
>>
>> diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
>> index 76b7926..55a5d87 100644
>> --- a/drivers/i2c/busses/i2c-tegra.c
>> +++ b/drivers/i2c/busses/i2c-tegra.c
>> @@ -78,6 +78,7 @@
>>   #define I2C_ERR_NO_ACK				0x01
>>   #define I2C_ERR_ARBITRATION_LOST		0x02
>>   #define I2C_ERR_UNKNOWN_INTERRUPT		0x04
>> +#define I2C_ERR_UNEXPECTED_STATUS               0x08
> 
> Use tabs like the the surrounding code. And perhaps convert all
> these flags to use the BIT() macro?
I shall correct the line and use tabs. I shall convert macros to BIT() 
if possible.

> 
>>   
>>   #define PACKET_HEADER0_HEADER_SIZE_SHIFT	28
>>   #define PACKET_HEADER0_PACKET_ID_SHIFT		16
>> @@ -112,7 +113,7 @@
>>   #define I2C_CLKEN_OVERRIDE			0x090
>>   #define I2C_MST_CORE_CLKEN_OVR			BIT(0)
>>   
>> -#define I2C_CONFIG_LOAD_TIMEOUT			1000000
>> +#define I2C_CONFIG_LOAD_TMOUT			1000000
> 
> Similar to xfer_tm already mentioned by Dmitry; just keep it as
> ..._TIMEOUT and ignore checkpatch on this issue. Or juggle the
> code in some other way to pacify checkpatch. E.g. abbreviate
> CONFIG instead? Or something. CONF is way easier to read than
> TMOUT IMHO...
OK. Just for consistency planning to ignore checkpatch warning and shall 
keep current macro I2C_CONFIG_LOAD_TIMEOUT.

-Thanks,
  Bitan