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| author | Scott Wood <scottwood@freescale.com> | 2007-09-05 14:29:10 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2007-09-10 16:02:09 -0500 |
| commit | 83fcdb4b352f74a8a74737aedeaf622c37140c73 (patch) | |
| tree | 2f948f23d9bf48aa08f82ff48661440c969ffa1c /arch/powerpc | |
| parent | 36c50f729b77144cae8d43457fefca66a4eeff6a (diff) | |
| download | linux-3.10-83fcdb4b352f74a8a74737aedeaf622c37140c73.tar.gz linux-3.10-83fcdb4b352f74a8a74737aedeaf622c37140c73.tar.bz2 linux-3.10-83fcdb4b352f74a8a74737aedeaf622c37140c73.zip | |
[POWERPC] cpm2: Fix off-by-one error in setbrg().
The hardware adds one to the BRG value to get the divider, so it must
be subtracted by software. Without this patch, characters will occasionally
be corrupted.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/sysdev/cpm2_common.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/cpm2_common.c b/arch/powerpc/sysdev/cpm2_common.c index 92441297479..c827715a509 100644 --- a/arch/powerpc/sysdev/cpm2_common.c +++ b/arch/powerpc/sysdev/cpm2_common.c @@ -102,7 +102,7 @@ cpm_setbrg(uint brg, uint rate) brg -= 4; } bp += brg; - *bp = ((BRG_UART_CLK / rate) << 1) | CPM_BRG_EN; + out_be32(bp, (((BRG_UART_CLK / rate) - 1) << 1) | CPM_BRG_EN); cpm2_unmap(bp); } |