[Blackfin] arch: Fix bug - Setting peripheral_map only when dma channel is UART2/3.

Singed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 8 insertions, 7 deletions

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 5453bc3664f..8fd5d22cec3 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -105,13 +105,14 @@ int request_dma(unsigned int channel, char *device_id)
         mutex_unlock(&(dma_ch[channel].dmalock));
 
 #ifdef CONFIG_BF54x
-        if (channel >= CH_UART2_RX && channel <= CH_UART3_TX &&
-                strncmp(device_id, "BFIN_UART", 9) == 0)
-                dma_ch[channel].regs->peripheral_map |=
-                        (channel - CH_UART2_RX + 0xC);
-        else
-                dma_ch[channel].regs->peripheral_map |=
-                        (channel - CH_UART2_RX + 0x6);
+        if (channel >= CH_UART2_RX && channel <= CH_UART3_TX) {
+                if (strncmp(device_id, "BFIN_UART", 9) == 0)
+                        dma_ch[channel].regs->peripheral_map |=
+                                (channel - CH_UART2_RX + 0xC);
+                else
+                        dma_ch[channel].regs->peripheral_map |=
+                                (channel - CH_UART2_RX + 0x6);
+        }
 #endif
 
         dma_ch[channel].device_id = device_id;