da9052-battery: Avoid out-of-range array access

Avoid accessing vc_tbl_ref[3], which is one past the end of that array, in
da9052_determine_vc_tbl_index(), by adjusting the loop bound.

(Hint: there is 'i + 1' inside the loop.)

Signed-off-by: Nickolai Zeldovich <nickolai@csail.mit.edu>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>

diff --git a/drivers/power/da9052-battery.c b/drivers/power/da9052-battery.c
index 3c5c2e4..08193fe 100644 (file)
--- a/drivers/power/da9052-battery.c
+++ b/drivers/power/da9052-battery.c
@@ -337,7 +337,7 @@ static unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp)
        if (adc_temp > vc_tbl_ref[DA9052_VC_TBL_REF_SZ - 1])
                return DA9052_VC_TBL_REF_SZ - 1;
 
-       for (i = 0; i < DA9052_VC_TBL_REF_SZ; i++) {
+       for (i = 0; i < DA9052_VC_TBL_REF_SZ - 1; i++) {
                if ((adc_temp > vc_tbl_ref[i]) &&
                    (adc_temp <= DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1])))
                                return i;