diff options
| author | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2016-05-04 16:16:47 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-05-06 19:03:41 +0200 |
| commit | 24850ccf9b4597a1269ac3409814219108fadf33 (patch) | |
| tree | 0bb99d2b9d20650571ee91b5c79e425696e68537 /src/drivers/pc80/rtc | |
| parent | d5a6eb44ca68954416a238c2825ac01f511ecd9a (diff) | |
rtc: Do checksum check for all bytes
Due to missing braces (that went undetected because of the
indentation), I584189d9fcf7c9b831d9c020ee7ed59bb5ae08e8
CMOS: add set_option() only takes the last changed byte into regard
when determining whether the checksum needs to be updated.
This bug went undetected for 5 years.
Change-Id: I47cedc801a60959386dfdcda3a13b8e3162a7ecb
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/14616
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/drivers/pc80/rtc')
| -rw-r--r-- | src/drivers/pc80/rtc/mc146818rtc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/drivers/pc80/rtc/mc146818rtc.c b/src/drivers/pc80/rtc/mc146818rtc.c index 35dad3256a..5fb9cf695b 100644 --- a/src/drivers/pc80/rtc/mc146818rtc.c +++ b/src/drivers/pc80/rtc/mc146818rtc.c @@ -198,7 +198,7 @@ static enum cb_err get_cmos_value(unsigned long bit, unsigned long length, uchar >>= byte_bit; /* shift the bits to byte align */ /* clear unspecified bits */ ret[0] = uchar & ((1 << length) - 1); - } else { /* more that one byte so transfer the whole bytes */ + } else { /* more than one byte so transfer the whole bytes */ for (i = 0; length; i++, length -= 8, byte++) { /* load the byte */ ret[i] = cmos_read(byte); @@ -284,11 +284,12 @@ static enum cb_err set_cmos_value(unsigned long bit, unsigned long length, if (byte_bit || length % 8) return CB_ERR_ARG; - for (i = 0; length; i++, length -= 8, byte++) + for (i = 0; length; i++, length -= 8, byte++) { cmos_write(ret[i], byte); if (byte >= LB_CKS_RANGE_START && byte <= LB_CKS_RANGE_END) chksum_update_needed = 1; + } } if (chksum_update_needed) { |