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-rw-r--r--src/drivers/pc80/rtc/option.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/drivers/pc80/rtc/option.c b/src/drivers/pc80/rtc/option.c
index e8e2345133..bb295cc3d8 100644
--- a/src/drivers/pc80/rtc/option.c
+++ b/src/drivers/pc80/rtc/option.c
@@ -211,7 +211,8 @@ void sanitize_cmos(void)
return;
u8 control_state = cmos_disable_rtc();
- for (i = 14; i < MIN(128, length); i++)
+ /* Max length of 256 spans bank 0 and bank 1 */
+ for (i = 14; i < MIN(256, length); i++)
cmos_write_inner(cmos_default[i], i);
cmos_restore_rtc(control_state);
}