From: YueHaibing <yuehaibing@huawei.com>
To: <peppe.cavallaro@st.com>, <alexandre.torgue@st.com>,
<joabreu@synopsys.com>, <davem@davemloft.net>, <kuba@kernel.org>,
<mcoquelin.stm32@gmail.com>, <ajayg@nvidia.com>
Cc: <netdev@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
YueHaibing <yuehaibing@huawei.com>
Subject: [PATCH v2] net: stmmac: Fix signedness bug in stmmac_probe_config_dt()
Date: Tue, 18 Aug 2020 23:15:00 +0800 [thread overview]
Message-ID: <20200818151500.51548-1-yuehaibing@huawei.com> (raw)
In-Reply-To: <20200818143952.50752-1-yuehaibing@huawei.com>
The "plat->phy_interface" variable is an enum and in this context GCC
will treat it as an unsigned int so the error handling is never
triggered.
Fixes: b9f0b2f634c0 ("net: stmmac: platform: fix probe for ACPI devices")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
v2: use rc to do err handling
---
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index f32317fa75c8..a6052e980ec5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -412,10 +412,11 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
*mac = NULL;
}
- plat->phy_interface = device_get_phy_mode(&pdev->dev);
- if (plat->phy_interface < 0)
- return ERR_PTR(plat->phy_interface);
+ rc = device_get_phy_mode(&pdev->dev);
+ if (rc < 0)
+ return ERR_PTR(rc);
+ plat->phy_interface = rc;
plat->interface = stmmac_of_get_mac_mode(np);
if (plat->interface < 0)
plat->interface = plat->phy_interface;
--
2.17.1
next prev parent reply other threads:[~2020-08-18 15:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-18 14:39 [PATCH] net: stmmac: Fix signedness bug in stmmac_probe_config_dt() YueHaibing
2020-08-18 14:51 ` Andreas Schwab
2020-08-18 15:15 ` Yuehaibing
2020-08-18 15:15 ` YueHaibing [this message]
2020-08-18 17:04 ` [PATCH v2] " Andrew Lunn
2020-08-20 2:23 ` Yuehaibing
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