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authorOndrej Zary <linux@rainbow-software.org>2012-06-01 10:29:08 +0000
committerDavid S. Miller <davem@davemloft.net>2012-06-02 17:09:08 -0400
commitb1ff4f96fd1c63890d78d8939c6e0f2b44ce3113 (patch)
tree2163e7e43c6f67a6a14087f6f6e39d4aea361de8
parent6d7407bfba0b4eb21d843ff1f9e9c86156e502b2 (diff)
downloadconfigs-b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113.tar.gz
mcs7830: Implement link state detection
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> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/usb/mcs7830.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c
index add1064f755..03c2d8d653d 100644
--- 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,
};