dma: pl330: remove unnecessary spinlock

Change-Id: I3e17fd6d5fd90999974de89621d860e229aed4e5
Signed-off-by: Eunok Jo <eunok25.jo@samsung.com>

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index d1dc0e8e024030eea1d13dd42a24ff7789440af0..27708c91c5a61add174b8f5470744e1957bc6f19 100644 (file)
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -490,8 +490,6 @@ struct pl330_dmac {
        /* To protect desc_pool manipulation */
        spinlock_t pool_lock;
 
-       spinlock_t multiirq_lock;
-
        /* Size of MicroCode buffers for each channel. */
        unsigned mcbufsz;
        /* ioremap'ed address of PL330 registers. */
@@ -1672,11 +1670,6 @@ static int pl330_update(struct pl330_dmac *pl330)
        u32 val;
        int id, ev, ret = 0;
 
-       if (pl330->multi_irq && !spin_trylock(&pl330->multiirq_lock)) {
-               ret = 1;
-               goto no_handle;
-       }
-
        regs = pl330->base;
 
        spin_lock_irqsave(&pl330->lock, flags);
@@ -1684,8 +1677,6 @@ static int pl330_update(struct pl330_dmac *pl330)
        if (!pl330->usage_count) {
                dev_err(pl330->ddma.dev, "%s:%d event is not exist!\n", __func__, __LINE__);
                spin_unlock_irqrestore(&pl330->lock, flags);
-               if (pl330->multi_irq)
-                       spin_unlock(&pl330->multiirq_lock);
                return 0;
        }
 
@@ -1778,10 +1769,6 @@ updt_exit:
                tasklet_schedule(&pl330->tasks);
        }
 
-no_handle:
-       if (pl330->multi_irq)
-               spin_unlock(&pl330->multiirq_lock);
-
        return ret;
 }
 
@@ -3220,7 +3207,6 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 
        INIT_LIST_HEAD(&pl330->desc_pool);
        spin_lock_init(&pl330->pool_lock);
-       spin_lock_init(&pl330->multiirq_lock);
 
        /* Create a descriptor pool of default size */
        if (!add_desc(pl330, GFP_KERNEL, NR_DEFAULT_DESC))