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i40iw: Protect req_resource_num update 

In i40iw_alloc_resource(), ensure that the update to
req_resource_num is protected by the lock.

Fixes: 8e06af711b ("i40iw: add main, hdr, status")

Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mustafa Ismail 2016-08-22 18:15:58 -05:00 committed by Doug Ledford
parent 6c7d46fdb8
commit 44856be3e9
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/i40iw/i40iw.h
View File

@ -435,8 +435,8 @@ static inline int i40iw_alloc_resource(struct i40iw_device *iwdev,
*next = resource_num + 1;
if (*next == max_resources)
*next = 0;
spin_unlock_irqrestore(&iwdev->resource_lock, flags);
*req_resource_num = resource_num;
spin_unlock_irqrestore(&iwdev->resource_lock, flags);
return 0;
}