提交 4d6b5b08 编写于 作者: K Kangjie Lu 提交者: Greg Kroah-Hartman

niu: fix missing checks of niu_pci_eeprom_read

[ Upstream commit 26fd962bde0b15e54234fe762d86bc0349df1de4 ]

niu_pci_eeprom_read() may fail, so we should check its return value
before using the read data.
Signed-off-by: NKangjie Lu <kjlu@umn.edu>
Acked-by: NShannon Nelson <shannon.lee.nelson@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
上级 1e480ee6
......@@ -8100,6 +8100,8 @@ static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
start += 3;
prop_len = niu_pci_eeprom_read(np, start + 4);
if (prop_len < 0)
return prop_len;
err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
if (err < 0)
return err;
......@@ -8144,8 +8146,12 @@ static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
netif_printk(np, probe, KERN_DEBUG, np->dev,
"VPD_SCAN: Reading in property [%s] len[%d]\n",
namebuf, prop_len);
for (i = 0; i < prop_len; i++)
*prop_buf++ = niu_pci_eeprom_read(np, off + i);
for (i = 0; i < prop_len; i++) {
err = niu_pci_eeprom_read(np, off + i);
if (err >= 0)
*prop_buf = err;
++prop_buf;
}
}
start += len;
......
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