[PATCH AUTOSEL 4.20 056/117] media: cedrus: don't initialize pointers with zero
Sasha Levin
sashal at kernel.org
Wed Jan 23 14:04:47 UTC 2019
On Wed, Jan 09, 2019 at 11:48:54AM +0300, Dan Carpenter wrote:
>This is a pure cleanup patch, it doesn't affect runtime.
>
>On Tue, Jan 08, 2019 at 02:25:24PM -0500, Sasha Levin wrote:
>> From: Mauro Carvalho Chehab <mchehab+samsung at kernel.org>
>>
>> [ Upstream commit e4d7b113fdccde1acf8638c5879f2a450d492303 ]
>>
>> A common mistake is to assume that initializing a var with:
>> struct foo f = { 0 };
>>
>> Would initialize a zeroed struct. Actually, what this does is
>> to initialize the first element of the struct to zero.
>>
>> According to C99 Standard 6.7.8.21:
>>
>> "If there are fewer initializers in a brace-enclosed
>> list than there are elements or members of an aggregate,
>> or fewer characters in a string literal used to initialize
>> an array of known size than there are elements in the array,
>> the remainder of the aggregate shall be initialized implicitly
>> the same as objects that have static storage duration."
>
>Static storage is initialized to zero so this is fine. It's just
>that Sparse complains if you mix NULL and zero.
I'll drop it, thank you.
--
Thanks,
Sasha
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