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net: dsa: qca8k: return with -EINVAL on invalid port 

Currently an invalid port throws a WARN_ON warning however invalid
uninitialized values in reg and cpu_port_index are being used later
on. Fix this by returning -EINVAL for an invalid port value.

Addresses clang-scan warnings:
drivers/net/dsa/qca8k.c:1981:3: warning: 2nd function call argument is an
  uninitialized value [core.CallAndMessage]
drivers/net/dsa/qca8k.c:1999:9: warning: 2nd function call argument is an
  uninitialized value [core.CallAndMessage]

Fixes: 7544b3ff74 ("net: dsa: qca8k: move pcs configuration")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220224220557.147075-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Colin Ian King 2022-02-24 22:05:57 +00:00 committed by Jakub Kicinski
parent 5ebaaa69bd
commit 38455fbcc8
1 changed files with 1 additions and 0 deletions
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1
drivers/net/dsa/qca8k.c
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@ -1937,6 +1937,7 @@ static int qca8k_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
default:
WARN_ON(1);
return -EINVAL;
}
/* Enable/disable SerDes auto-negotiation as necessary */