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Sender: Guenter Roeck <groeck7@gmail.com>
Subject: Re: [PATCH v4 RESEND net-next] net: socket: use BIT() for MSG_*
To:     Andy Shevchenko <andy.shevchenko@gmail.com>,
        Menglong Dong <menglong8.dong@gmail.com>
Cc:     Jakub Kicinski <kuba@kernel.org>,
        "davem@davemloft.net" <davem@davemloft.net>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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From:   Guenter Roeck <linux@roeck-us.net>
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Message-ID: <f08f5da3-3e60-1f17-f26f-71be48b46b28@roeck-us.net>
Date:   Wed, 17 Mar 2021 03:17:28 -0700
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On 3/17/21 2:40 AM, Andy Shevchenko wrote:
> On Wed, Mar 17, 2021 at 11:36 AM Andy Shevchenko
> <andy.shevchenko@gmail.com> wrote:
>> On Wed, Mar 17, 2021 at 10:21 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
> 
> ...
> 
>> It maybe fixed by swapping positions of the arguments, i.e. ~(FOO |
>> BAR) & flags.
> 
> ...and type casting will be needed anyway here...
> 
> I was thinking about this case
> 
> drivers/i2c/busses/i2c-designware-common.c:420:
> dev->sda_hold_time & ~(u32)DW_IC_SDA_HOLD_RX_MASK
> ,
> > but sda_hold_time there is unsigned.
> 
That is needed because of the %d. Without the (u32), the expression is
promoted to unsigned long and the compiler wants to see %ld.

Guenter