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net: davicom: Fix return type of dm9000_start_xmit 

The ndo_start_xmit field in net_device_ops is expected to be of type
netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).

The mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.

The return type of dm9000_start_xmit should be changed from int to
netdev_tx_t.

Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20220912194722.809525-1-nhuck@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nathan Huckleberry 2022-09-12 12:47:19 -07:00 committed by Jakub Kicinski
parent fcb7c210a2
commit 0191580b00
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/davicom/dm9000.c
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@ -1011,7 +1011,7 @@ static void dm9000_send_packet(struct net_device *dev,
* Hardware start transmission.
* Send a packet to media from the upper layer.
*/
static int
static netdev_tx_t
dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
unsigned long flags;