bnxt_en: Check for zero length value in bnxt_get_nvram_item().

Return -EINVAL if the length is zero and not proceed to do essentially
nothing.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2017-10-26 11:51:22 -04:00 • committed by David S. Miller
commit e0ad8fc598