lkml.org 
[lkml]   [2012]   [Jun]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mcs7830: Implement link state detection
Date
Add .status callback that detects link state changes.
Tested with MCS7832CV-AA chip (9710:7830, identified as rev.C by the driver).
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=28532

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>

--- a/drivers/net/usb/mcs7830.c
+++ b/drivers/net/usb/mcs7830.c
@@ -629,11 +629,31 @@ static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
return skb->len > 0;
}

+static void mcs7830_status(struct usbnet *dev, struct urb *urb)
+{
+ u8 *buf = urb->transfer_buffer;
+ bool link;
+
+ if (urb->actual_length < 16)
+ return;
+
+ link = !(buf[1] & 0x20);
+ if (netif_carrier_ok(dev->net) != link) {
+ if (link) {
+ netif_carrier_on(dev->net);
+ usbnet_defer_kevent(dev, EVENT_LINK_RESET);
+ } else
+ netif_carrier_off(dev->net);
+ netdev_dbg(dev->net, "Link Status is: %d\n", link);
+ }
+}
+
static const struct driver_info moschip_info = {
.description = "MOSCHIP 7830/7832/7730 usb-NET adapter",
.bind = mcs7830_bind,
.rx_fixup = mcs7830_rx_fixup,
- .flags = FLAG_ETHER,
+ .flags = FLAG_ETHER | FLAG_LINK_INTR,
+ .status = mcs7830_status,
.in = 1,
.out = 2,
};
@@ -642,7 +662,8 @@ static const struct driver_info sitecom_info = {
.description = "Sitecom LN-30 usb-NET adapter",
.bind = mcs7830_bind,
.rx_fixup = mcs7830_rx_fixup,
- .flags = FLAG_ETHER,
+ .flags = FLAG_ETHER | FLAG_LINK_INTR,
+ .status = mcs7830_status,
.in = 1,
.out = 2,
};
--
Ondrej Zary


\
 
 \ /
  Last update: 2012-06-01 22:41    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site