From: Dan Carpenter <dan.carpenter@oracle.com>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Mathieu Olivari <mathieu@codeaurora.org>
Cc: Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <joabreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
kernel-janitors@vger.kernel.org
Subject: [PATCH net] net: ethernet: stmmac: Fix signedness bug in ipq806x_gmac_of_parse()
Date: Wed, 25 Sep 2019 11:05:54 +0000 [thread overview]
Message-ID: <20190925110554.GQ3264@mwanda> (raw)
The "gmac->phy_mode" variable is an enum and in this context GCC will
treat it as an unsigned int so the error handling will never be
triggered.
Fixes: b1c17215d718 ("stmmac: add ipq806x glue layer")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
index 2c6d7c69c8f7..0d21082ceb93 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
@@ -191,7 +191,7 @@ static int ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
struct device *dev = &gmac->pdev->dev;
gmac->phy_mode = of_get_phy_mode(dev->of_node);
- if (gmac->phy_mode < 0) {
+ if ((int)gmac->phy_mode < 0) {
dev_err(dev, "missing phy mode property\n");
return -EINVAL;
}
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Mathieu Olivari <mathieu@codeaurora.org>
Cc: Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <joabreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
kernel-janitors@vger.kernel.org
Subject: [PATCH net] net: ethernet: stmmac: Fix signedness bug in ipq806x_gmac_of_parse()
Date: Wed, 25 Sep 2019 14:05:54 +0300 [thread overview]
Message-ID: <20190925110554.GQ3264@mwanda> (raw)
The "gmac->phy_mode" variable is an enum and in this context GCC will
treat it as an unsigned int so the error handling will never be
triggered.
Fixes: b1c17215d718 ("stmmac: add ipq806x glue layer")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
index 2c6d7c69c8f7..0d21082ceb93 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
@@ -191,7 +191,7 @@ static int ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
struct device *dev = &gmac->pdev->dev;
gmac->phy_mode = of_get_phy_mode(dev->of_node);
- if (gmac->phy_mode < 0) {
+ if ((int)gmac->phy_mode < 0) {
dev_err(dev, "missing phy mode property\n");
return -EINVAL;
}
--
2.20.1
next reply other threads:[~2019-09-25 11:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 11:05 Dan Carpenter [this message]
2019-09-25 11:05 ` [PATCH net] net: ethernet: stmmac: Fix signedness bug in ipq806x_gmac_of_parse() Dan Carpenter
2019-09-27 8:22 ` David Miller
2019-09-27 8:22 ` David Miller
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