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we can use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR 1. drivers/net/appletalk/ipddp.c 2. drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c Generated by: scripts/coccinelle/api/ptr_ret.cocci Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>