diff options
| author | Ming Lei <ming.lei@canonical.com> | 2013-02-22 03:05:03 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-25 20:49:51 (GMT) |
| commit | 7643721471117d5f62ca36f328d3dc8d84af4402 (patch) | |
| tree | ed2b949b490332f95c6f802ad1a45b1ea6ba6f8a /drivers/net/usb/smsc95xx.c | |
| parent | 70a737b795d1d2fa0c1b54b8b7870c86cedd03ac (diff) | |
| download | linux-7643721471117d5f62ca36f328d3dc8d84af4402.tar.xz | |
usbnet: smsc95xx: fix suspend failure
The three below functions:
smsc95xx_enter_suspend0()
smsc95xx_enter_suspend1()
smsc95xx_enter_suspend2()
return > 0 in case of success, so they will cause smsc95xx_suspend()
to return > 0 and cause suspend failure.
The bug is introduced in commit 3b9f7d(smsc95xx: fix error handling
in suspend failure case).
Cc: <stable@vger.kernel.org> [3.8]
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/smsc95xx.c')
| -rw-r--r-- | drivers/net/usb/smsc95xx.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index ff4fa37..b2721bc 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1247,10 +1247,12 @@ static int smsc95xx_enter_suspend0(struct usbnet *dev) /* read back PM_CTRL */ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); + if (ret < 0) + return ret; pdata->suspend_flags |= SUSPEND_SUSPEND0; - return ret; + return 0; } static int smsc95xx_enter_suspend1(struct usbnet *dev) @@ -1293,10 +1295,12 @@ static int smsc95xx_enter_suspend1(struct usbnet *dev) val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_); ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); + if (ret < 0) + return ret; pdata->suspend_flags |= SUSPEND_SUSPEND1; - return ret; + return 0; } static int smsc95xx_enter_suspend2(struct usbnet *dev) @@ -1313,10 +1317,12 @@ static int smsc95xx_enter_suspend2(struct usbnet *dev) val |= PM_CTL_SUS_MODE_2; ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); + if (ret < 0) + return ret; pdata->suspend_flags |= SUSPEND_SUSPEND2; - return ret; + return 0; } static int smsc95xx_enter_suspend3(struct usbnet *dev) |