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authorMing Lei <ming.lei@canonical.com>2013-03-15 12:08:59 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-25 10:55:47 -0700
commit5410a473fb7a466020af31e8b400c2d14ed94925 (patch)
tree8a1ce76da8008c72caecee799b563a6ba55fee58 /drivers/net/usb
parent0d41be53f0a65c52f3099d9a4b4fa6e1bca07be8 (diff)
usbnet: smsc75xx: don't recover device if suspend fails in system sleep
If suspend callback fails in system sleep context, usb core will ignore the failure and let system sleep go ahead further, so this patch doesn't recover device under this situation. Also add comments on this case. Acked-by: David S. Miller <davem@davemloft.net> Cc: Steve Glendinning <steve.glendinning@shawell.net> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/usb')
-rw-r--r--drivers/net/usb/smsc75xx.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
index 9abe51710f22..21b607ab86f2 100644
--- a/drivers/net/usb/smsc75xx.c
+++ b/drivers/net/usb/smsc75xx.c
@@ -2011,7 +2011,11 @@ static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
ret = smsc75xx_enter_suspend0(dev);
done:
- if (ret)
+ /*
+ * TODO: resume() might need to handle the suspend failure
+ * in system sleep
+ */
+ if (ret && PMSG_IS_AUTO(message))
usbnet_resume(intf);
return ret;
}