Re: [PATCH RFC] wimax/i2400m: fixup completion handling for resetting a device
From: Nicholas Mc Guire
Date: Fri Mar 20 2015 - 03:47:15 EST
On Wed, 18 Mar 2015, Sergei Shtylyov wrote:
> Hello.
>
> On 3/17/2015 12:49 PM, Nicholas Mc Guire wrote:
>
>> wait_for_completion_timeout return 0 (timeout) or >=1 (completion) so the check
>> for > 0 in the else branch is always true and can be dropped. The comment seems
>> misleading as it is always going to pass the result up.
>
>> The sync of the completion access with __i2400m_dev_reset_handle (which checks
>> for if (i2400m->reset_ctx) could race if i2400m_reset() returns negative so
>> the resetting of i2400m->reset_ctx == NULL is moved to the out: path.
>
>> As wait_for_completion_timeout returns unsigned long not int, an appropriately
>> named variable of type unsigned long is added and assignments fixed up.
>
> Don't try to do several things in one patch.
>
normaly yes - this was marked as RFC and if I had split it up into
3 patches it would be hard to see how it fits together without
actually applying them.
The intent was to get feedback notably on moving i2400m->reset_ctx == NULL
and if dropping the (I think missleading) comment about negative return is ok
Should this be in seperate patches even as RFC ?
Once that is clarified it will go out as 3 patchs.
thx!
hofrat
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