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Date: Tue, 27 Nov 2012 14:28:01 +0000
From: Steve Glendinning <steve.glendinning@...well.net>
To: netdev@...r.kernel.org
Cc: Steve Glendinning <steve.glendinning@...well.net>
Subject: [PATCH 1/2] smsc75xx: refactor entering suspend modes
This patch splits out the logic for entering suspend modes
to separate functions, to reduce the complexity of the
smsc75xx_suspend function.
Signed-off-by: Steve Glendinning <steve.glendinning@...well.net>
---
drivers/net/usb/smsc75xx.c | 62 +++++++++++++++++++++++++++-----------------
1 file changed, 38 insertions(+), 24 deletions(-)
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
index 953c4f4..4655c01 100644
--- a/drivers/net/usb/smsc75xx.c
+++ b/drivers/net/usb/smsc75xx.c
@@ -1213,6 +1213,42 @@ static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
return 0;
}
+static int smsc75xx_enter_suspend0(struct usbnet *dev)
+{
+ u32 val;
+ int ret;
+
+ ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
+ check_warn_return(ret, "Error reading PMT_CTL\n");
+
+ val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
+ val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
+
+ ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
+ check_warn_return(ret, "Error writing PMT_CTL\n");
+
+ smsc75xx_set_feature(dev, USB_DEVICE_REMOTE_WAKEUP);
+
+ return 0;
+}
+
+static int smsc75xx_enter_suspend2(struct usbnet *dev)
+{
+ u32 val;
+ int ret;
+
+ ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
+ check_warn_return(ret, "Error reading PMT_CTL\n");
+
+ val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
+ val |= PMT_CTL_SUS_MODE_2;
+
+ ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
+ check_warn_return(ret, "Error writing PMT_CTL\n");
+
+ return 0;
+}
+
static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usbnet *dev = usb_get_intfdata(intf);
@@ -1244,17 +1280,7 @@ static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
check_warn_return(ret, "Error writing PMT_CTL\n");
- /* enter suspend2 mode */
- ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
- check_warn_return(ret, "Error reading PMT_CTL\n");
-
- val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
- val |= PMT_CTL_SUS_MODE_2;
-
- ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
- check_warn_return(ret, "Error writing PMT_CTL\n");
-
- return 0;
+ return smsc75xx_enter_suspend2(dev);
}
if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
@@ -1368,19 +1394,7 @@ static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
/* some wol options are enabled, so enter SUSPEND0 */
netdev_info(dev->net, "entering SUSPEND0 mode\n");
-
- ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
- check_warn_return(ret, "Error reading PMT_CTL\n");
-
- val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
- val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
-
- ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
- check_warn_return(ret, "Error writing PMT_CTL\n");
-
- smsc75xx_set_feature(dev, USB_DEVICE_REMOTE_WAKEUP);
-
- return 0;
+ return smsc75xx_enter_suspend0(dev);
}
static int smsc75xx_resume(struct usb_interface *intf)
--
1.7.10.4
--
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