diff options
| author | Kangjie Lu <kjlu@umn.edu> | 2018-12-25 10:56:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 21:46:08 +0300 |
| commit | ba87bdade1366d650e00ff7b1524dba8bd4d71f5 (patch) | |
| tree | 71314b9003e02a3c7fd4d4e8a4d6d5fc56c0ce89 | |
| parent | e8f13f32f436e3fae2b43a433ec5c677e0e2f5f9 (diff) | |
| download | linux-ba87bdade1366d650e00ff7b1524dba8bd4d71f5.tar.xz | |
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: Kangjie Lu <kjlu@umn.edu>
Acked-by: Shannon Nelson <shannon.lee.nelson@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/sun/niu.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index e92f41d20a2c..411a69bea1d4 100644 --- a/drivers/net/ethernet/sun/niu.c +++ b/drivers/net/ethernet/sun/niu.c @@ -8119,6 +8119,8 @@ 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; @@ -8163,8 +8165,12 @@ 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; |