libpayload: fix compiler warning for first_cmos_entry()

[coreboot.git] / payloads / libpayload / drivers / options.c

diff --git a/payloads/libpayload/drivers/options.c b/payloads/libpayload/drivers/options.c
index 7c762516f52e341045c753b3a65353be83c13784..73316c1de6db86f425b69cd5d37f4aa8d36530a7 100644 (file)
--- a/payloads/libpayload/drivers/options.c
+++ b/payloads/libpayload/drivers/options.c
@@ -155,7 +155,7 @@ static int set_cmos_value(const struct nvram_accessor *nvram, u32 bitnum, u32 le
 static struct cb_cmos_entries *lookup_cmos_entry(struct cb_cmos_option_table *option_table, char *name)
 {
        struct cb_cmos_entries *cmos_entry;
-       int len = strnlen(name, CMOS_MAX_NAME_LENGTH);
+       int len = name ? strnlen(name, CMOS_MAX_NAME_LENGTH) : 0;
 
        /* cmos entries are located right after the option table */
 
@@ -173,7 +173,7 @@ static struct cb_cmos_entries *lookup_cmos_entry(struct cb_cmos_option_table *op
 
 struct cb_cmos_entries *first_cmos_entry(struct cb_cmos_option_table *option_table)
 {
-       return lookup_cmos_entry(option_table, "");
+       return lookup_cmos_entry(option_table, NULL);
 }
 
 struct cb_cmos_entries *next_cmos_entry(struct cb_cmos_entries *cmos_entry)