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-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);