Change ipu_irq_handler() to avoid gcc warning:

drivers/dma/ipu/ipu_irq.c:305:4: warning: 'irq' may be used
uninitialized in this function [-Wmaybe-uninitialized]
    generic_handle_irq(irq);

Signed-off-by: yalin wang <yalin.wang2...@gmail.com>
---
 drivers/dma/ipu/ipu_irq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/ipu/ipu_irq.c b/drivers/dma/ipu/ipu_irq.c
index 7489d2a..1a74eee 100644
--- a/drivers/dma/ipu/ipu_irq.c
+++ b/drivers/dma/ipu/ipu_irq.c
@@ -286,23 +286,21 @@ static void ipu_irq_handler(unsigned int __irq, struct 
irq_desc *desc)
                raw_spin_unlock(&bank_lock);
                while ((line = ffs(status))) {
                        struct ipu_irq_map *map;
-                       unsigned int irq;
 
                        line--;
                        status &= ~(1UL << line);
 
                        raw_spin_lock(&bank_lock);
                        map = src2map(32 * i + line);
-                       if (map)
-                               irq = map->irq;
                        raw_spin_unlock(&bank_lock);
 
                        if (!map) {
                                pr_err("IPU: Interrupt on unmapped source %u 
bank %d\n",
                                       line, i);
                                continue;
+                       } else {
+                               generic_handle_irq(map->irq);
                        }
-                       generic_handle_irq(irq);
                }
        }
 }
-- 
1.9.1

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