sizeof when applied to a pointer typed expression gives the size of the pointer. Found by coccinelle spatch "misc/noderef.cocci" Signed-off-by: Thomas Meyer <thomas@xxxxxxxx> --- diff -u -p a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c --- a/arch/mips/bcm47xx/sprom.c +++ b/arch/mips/bcm47xx/sprom.c @@ -162,7 +162,7 @@ static void nvram_read_alpha2(const char pr_warn("alpha2 is too long %s\n", buf); return; } - memcpy(val, buf, sizeof(val)); + memcpy(val, buf, sizeof(*val)); } static void bcm47xx_fill_sprom_r1234589(struct ssb_sprom *sprom,