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authorMike Frysinger <vapier.adi@gmail.com>2009-01-07 23:14:38 +0800
committerBryan Wu <cooloney@kernel.org>2009-01-07 23:14:38 +0800
commit508808cda6c39819f51b58e95ba5c6222acea222 (patch)
tree469ad97313037db5e7ee9d09714eb05a740050d8
parent7f1e2f98bd29f51edd64e0c15b10d9a18a7af4e1 (diff)
Blackfin arch: do not allow people to pass in a diff clkin_hz value
do not allow people to pass in a diff clkin_hz value when reprogramming clocks -- it is too late currently Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
-rw-r--r--arch/blackfin/kernel/setup.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index c05e5e3bad6..4dffb913147 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -951,6 +951,10 @@ static u_long get_clkin_hz(void)
static int __init early_init_clkin_hz(char *buf)
{
cached_clkin_hz = simple_strtoul(buf, NULL, 0);
+#ifdef BFIN_KERNEL_CLOCK
+ if (cached_clkin_hz != CONFIG_CLKIN_HZ)
+ panic("cannot change clkin_hz when reprogramming clocks");
+#endif
return 1;
}
early_param("clkin_hz=", early_init_clkin_hz);