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-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 93229b3d6e3..339293d677c 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -117,15 +117,14 @@ int request_dma(unsigned int channel, char *device_id)
#ifdef CONFIG_BF54x
if (channel >= CH_UART2_RX && channel <= CH_UART3_TX) {
- if (strncmp(device_id, "BFIN_UART", 9) == 0) {
- dma_ch[channel].regs->peripheral_map &= 0x0FFF;
- dma_ch[channel].regs->peripheral_map |=
+ unsigned int per_map;
+ per_map = dma_ch[channel].regs->peripheral_map & 0xFFF;
+ if (strncmp(device_id, "BFIN_UART", 9) == 0)
+ dma_ch[channel].regs->peripheral_map = per_map |
((channel - CH_UART2_RX + 0xC)<<12);
- } else {
- dma_ch[channel].regs->peripheral_map &= 0x0FFF;
- dma_ch[channel].regs->peripheral_map |=
+ else
+ dma_ch[channel].regs->peripheral_map = per_map |
((channel - CH_UART2_RX + 0x6)<<12);
- }
}
#endif