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| author | Daniel Mack <zonque@gmail.com> | 2013-08-10 18:52:16 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-08-14 13:55:15 +0530 |
| commit | 638a542cc450e5dca52c82437d746548c0bcbd8b (patch) | |
| tree | c77d879345998f76165543e5bd8f7546127e1e9d /drivers/dma/mmp_pdma.c | |
| parent | 8b298ded902a96cf434738d2a1d83f4a768362ea (diff) | |
| download | blackbird-op-linux-638a542cc450e5dca52c82437d746548c0bcbd8b.tar.gz blackbird-op-linux-638a542cc450e5dca52c82437d746548c0bcbd8b.zip | |
dma: mmp_pdma: refactor unlocking path in lookup_phy()
As suggested by Ezequiel García, release the spinlock at the end of the
function only, and use a goto for the control flow.
Just a minor cleanup.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/mmp_pdma.c')
| -rw-r--r-- | drivers/dma/mmp_pdma.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index b061e2696728..3c2ad72a1621 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -220,7 +220,7 @@ static struct mmp_pdma_phy *lookup_phy(struct mmp_pdma_chan *pchan) { int prio, i; struct mmp_pdma_device *pdev = to_mmp_pdma_dev(pchan->chan.device); - struct mmp_pdma_phy *phy; + struct mmp_pdma_phy *phy, *found = NULL; unsigned long flags; /* @@ -239,14 +239,15 @@ static struct mmp_pdma_phy *lookup_phy(struct mmp_pdma_chan *pchan) phy = &pdev->phy[i]; if (!phy->vchan) { phy->vchan = pchan; - spin_unlock_irqrestore(&pdev->phy_lock, flags); - return phy; + found = phy; + goto out_unlock; } } } +out_unlock: spin_unlock_irqrestore(&pdev->phy_lock, flags); - return NULL; + return found; } static void mmp_pdma_free_phy(struct mmp_pdma_chan *pchan) |
