diff options
| author | Ondrej Zary <linux@rainbow-software.org> | 2012-06-01 10:29:08 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-02 17:09:08 -0400 |
| commit | b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113 (patch) | |
| tree | 2163e7e43c6f67a6a14087f6f6e39d4aea361de8 | |
| parent | 6d7407bfba0b4eb21d843ff1f9e9c86156e502b2 (diff) | |
| download | linux-stable-b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113.tar.gz linux-stable-b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113.tar.bz2 linux-stable-b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113.zip | |
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.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c index add1064f755d..03c2d8d653df 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, }; |