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-rw-r--r--src/ec/google/chromeec/ec_lpc.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/ec/google/chromeec/ec_lpc.c b/src/ec/google/chromeec/ec_lpc.c
index c8665c9e82..61005d3e3b 100644
--- a/src/ec/google/chromeec/ec_lpc.c
+++ b/src/ec/google/chromeec/ec_lpc.c
@@ -41,9 +41,11 @@ static void read_bytes(u16 port, unsigned int length, u8 *dest, u8 *csum)
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_MEC)
/* Access desired range though EMI interface */
if (port >= MEC_EMI_RANGE_START && port <= MEC_EMI_RANGE_END) {
- csum += mec_io_bytes(MEC_IO_READ, MEC_EMI_BASE,
+ u8 ret = mec_io_bytes(MEC_IO_READ, MEC_EMI_BASE,
port - MEC_EMI_RANGE_START,
dest, length);
+ if (csum)
+ *csum += ret;
return;
}
#endif
@@ -78,9 +80,11 @@ static void write_bytes(u16 port, unsigned int length, u8 *msg, u8 *csum)
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_MEC)
/* Access desired range though EMI interface */
if (port >= MEC_EMI_RANGE_START && port <= MEC_EMI_RANGE_END) {
- csum += mec_io_bytes(MEC_IO_WRITE, MEC_EMI_BASE,
+ u8 ret = mec_io_bytes(MEC_IO_WRITE, MEC_EMI_BASE,
port - MEC_EMI_RANGE_START,
msg, length);
+ if (csum)
+ *csum += ret;
return;
}
#endif