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i40iw: Remove unnecessary synchronize_irq() before free_irq()

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Calling synchronize_irq() right before free_irq() is quite useless. On one
hand the IRQ can easily fire again before free_irq() is entered, on the
other hand free_irq() itself calls synchronize_irq() internally (in a race
condition free way), before any state associated with the IRQ is freed.

Patch was generated using the following semantic patch:
// <smpl>
@@
expression irq;
@@
-synchronize_irq(irq);
 free_irq(irq, ...);
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Faisal Latif <faisal.latif#intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Lars-Peter Clausen 2016-03-28 11:31:26 +02:00 committed by Doug Ledford
parent 2016de7ba0
commit 6d6c5c1eb3
1 changed files with 0 additions and 1 deletions
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1
drivers/infiniband/hw/i40iw/i40iw_main.c
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@ -270,7 +270,6 @@ static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
else
i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0);
synchronize_irq(msix_vec->irq);
free_irq(msix_vec->irq, dev_id);
}