dma: cppi41: use cppi41_pop_desc() where possible

Use cppi41_pop_desc() when appropriate instead of open-coding the same
functionality again. That makes the code more readable. The function has
to be moved some lines up for this change.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index 7a90317d2e7d811722029a983909b75c34170587..2500f60393f484d584de0e9023bd3ea2a4eca7af 100644 (file)
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -266,6 +266,15 @@ static u32 pd_trans_len(u32 val)
        return val & ((1 << (DESC_LENGTH_BITS_NUM + 1)) - 1);
 }
 
+static u32 cppi41_pop_desc(struct cppi41_dd *cdd, unsigned queue_num)
+{
+       u32 desc;
+
+       desc = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(queue_num));
+       desc &= ~0x1f;
+       return desc;
+}
+
 static irqreturn_t cppi41_irq(int irq, void *data)
 {
        struct cppi41_dd *cdd = data;
@@ -303,8 +312,7 @@ static irqreturn_t cppi41_irq(int irq, void *data)
                        q_num = __fls(val);
                        val &= ~(1 << q_num);
                        q_num += 32 * i;
-                       desc = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(q_num));
-                       desc &= ~0x1f;
+                       desc = cppi41_pop_desc(cdd, q_num);
                        c = desc_to_chan(cdd, desc);
                        if (WARN_ON(!c)) {
                                pr_err("%s() q %d desc %08x\n", __func__,
@@ -520,15 +528,6 @@ static void cppi41_compute_td_desc(struct cppi41_desc *d)
        d->pd0 = DESC_TYPE_TEARD << DESC_TYPE;
 }
 
-static u32 cppi41_pop_desc(struct cppi41_dd *cdd, unsigned queue_num)
-{
-       u32 desc;
-
-       desc = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(queue_num));
-       desc &= ~0x1f;
-       return desc;
-}
-
 static int cppi41_tear_down_chan(struct cppi41_channel *c)
 {
        struct cppi41_dd *cdd = c->cdd;
@@ -612,7 +611,7 @@ static int cppi41_tear_down_chan(struct cppi41_channel *c)
 
        WARN_ON(!c->td_retry);
        if (!c->td_desc_seen) {
-               desc_phys = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(c->q_num));
+               desc_phys = cppi41_pop_desc(cdd, c->q_num);
                WARN_ON(!desc_phys);
        }