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net: ethernet: ti: cpsw_ale: Fix access to un-initialized memory

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It is spurious to allocate a bitmap without initializing it.
So, better safe than sorry, initialize it to 0 at least to have some known
values.

While at it, switch to the devm_bitmap_ API which is less verbose.

Fixes: 4b41d34367 ("net: ethernet: ti: cpsw: allow untagged traffic on host port")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christophe JAILLET 2021-11-08 22:28:55 +01:00 committed by David S. Miller
parent f64ab8e4f3
commit 7a166854b4
1 changed files with 2 additions and 4 deletions
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6
drivers/net/ethernet/ti/cpsw_ale.c
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@ -1299,10 +1299,8 @@ struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params)
if (!ale)
return ERR_PTR(-ENOMEM);
ale->p0_untag_vid_mask =
devm_kmalloc_array(params->dev, BITS_TO_LONGS(VLAN_N_VID),
sizeof(unsigned long),
GFP_KERNEL);
ale->p0_untag_vid_mask = devm_bitmap_zalloc(params->dev, VLAN_N_VID,
GFP_KERNEL);
if (!ale->p0_untag_vid_mask)
return ERR_PTR(-ENOMEM);