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bnxt_en: Return error when allocating zero size context memory.

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bnxt_alloc_ctx_pg_tbls() should return error when the memory size of the
context memory to set up is zero.  By returning success (0), the caller
may proceed normally and may crash later when it tries to set up the
memory.

Fixes: 08fe9d1816 ("bnxt_en: Add Level 2 context memory paging support.")
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 2020-04-26 16:24:41 -04:00 committed by David S. Miller
parent bae361c54f
commit bbf211b1ec
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -6642,7 +6642,7 @@ static int bnxt_alloc_ctx_pg_tbls(struct bnxt *bp,
int rc;
if (!mem_size)
return 0;
return -EINVAL;
ctx_pg->nr_pages = DIV_ROUND_UP(mem_size, BNXT_PAGE_SIZE);
if (ctx_pg->nr_pages > MAX_CTX_TOTAL_PAGES) {