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author | 2008-10-13 10:33:51 +0100 | |
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committer | 2008-10-13 09:51:38 -0700 | |
commit | ab2375f2fe256358a982e357d298801cf1adbd00 (patch) | |
tree | f64dc27aa9756dd951da6a9453db7a75f437d083 /arch/blackfin | |
parent | Blackfin Serial Driver: Fix bug - ircp fails on sir over Blackfin UART (diff) | |
download | linux-ab2375f2fe256358a982e357d298801cf1adbd00.tar.gz linux-ab2375f2fe256358a982e357d298801cf1adbd00.tar.bz2 linux-ab2375f2fe256358a982e357d298801cf1adbd00.zip |
Blackfin Serial Driver: Fix bug - request UART2/3 peripheral mapped interrupts in PIO mode
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 13 |
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 93229b3d6e3e..339293d677cc 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 |