From: Guojia Liao liaoguojia@huawei.com
[ Upstream commit e79c0e324b011b0288cd411a5b53870a7730f163 ]
abs() returns signed long, which could not convert the type as unsigned, and it may cause a mismatch type warning from static tools. To fix it, this patch uses an variable to save the abs()'s result and does a explicit conversion.
Signed-off-by: Guojia Liao liaoguojia@huawei.com Signed-off-by: Guangbin Huang huangguangbin2@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index c0a478ae9583..0dbed35645ed 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -10,7 +10,14 @@
static u16 hclge_errno_to_resp(int errno) { - return abs(errno); + int resp = abs(errno); + + /* The status for pf to vf msg cmd is u16, constrainted by HW. + * We need to keep the same type with it. + * The intput errno is the stander error code, it's safely to + * use a u16 to store the abs(errno). + */ + return (u16)resp; }
/* hclge_gen_resp_to_vf: used to generate a synchronous response to VF when PF