Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking changes from David Miller:

1) Allow to dump, monitor, and change the bridge multicast database
   using netlink.  From Cong Wang.

2) RFC 5961 TCP blind data injection attack mitigation, from Eric
   Dumazet.

3) Networking user namespace support from Eric W. Biederman.

4) tuntap/virtio-net multiqueue support by Jason Wang.

5) Support for checksum offload of encapsulated packets (basically,
   tunneled traffic can still be checksummed by HW).  From Joseph
   Gasparakis.

6) Allow BPF filter access to VLAN tags, from Eric Dumazet and
   Daniel Borkmann.

7) Bridge port parameters over netlink and BPDU blocking support
   from Stephen Hemminger.

8) Improve data access patterns during inet socket demux by rearranging
   socket layout, from Eric Dumazet.

9) TIPC protocol updates and cleanups from Ying Xue, Paul Gortmaker, and
   Jon Maloy.

10) Update TCP socket hash sizing to be more in line with current day
    realities.  The existing heurstics were choosen a decade ago.
    From Eric Dumazet.

11) Fix races, queue bloat, and excessive wakeups in ATM and
    associated drivers, from Krzysztof Mazur and David Woodhouse.

12) Support DOVE (Distributed Overlay Virtual Ethernet) extensions
    in VXLAN driver, from David Stevens.

13) Add "oops_only" mode to netconsole, from Amerigo Wang.

14) Support set and query of VEB/VEPA bridge mode via PF_BRIDGE, also
    allow DCB netlink to work on namespaces other than the initial
    namespace.  From John Fastabend.

15) Support PTP in the Tigon3 driver, from Matt Carlson.

16) tun/vhost zero copy fixes and improvements, plus turn it on
    by default, from Michael S. Tsirkin.

17) Support per-association statistics in SCTP, from Michele
    Baldessari.

And many, many, driver updates, cleanups, and improvements.  Too
numerous to mention individually.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
  net/mlx4_en: Add support for destination MAC in steering rules
  net/mlx4_en: Use generic etherdevice.h functions.
  net: ethtool: Add destination MAC address to flow steering API
  bridge: add support of adding and deleting mdb entries
  bridge: notify mdb changes via netlink
  ndisc: Unexport ndisc_{build,send}_skb().
  uapi: add missing netconf.h to export list
  pkt_sched: avoid requeues if possible
  solos-pci: fix double-free of TX skb in DMA mode
  bnx2: Fix accidental reversions.
  bna: Driver Version Updated to 3.1.2.1
  bna: Firmware update
  bna: Add RX State
  bna: Rx Page Based Allocation
  bna: TX Intr Coalescing Fix
  bna: Tx and Rx Optimizations
  bna: Code Cleanup and Enhancements
  ath9k: check pdata variable before dereferencing it
  ath5k: RX timestamp is reported at end of frame
  ath9k_htc: RX timestamp is reported at end of frame
  ...

1 files changed, 36 insertions, 3 deletions

diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index 82cf0fa..5a1c1d0 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -906,8 +906,8 @@ static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
 /*
  * SDIO interrupt handler.
  *
- * This function reads the interrupt status from firmware and assigns
- * the main process in workqueue which will handle the interrupt.
+ * This function reads the interrupt status from firmware and handles
+ * the interrupt in current thread (ksdioirqd) right away.
  */
 static void
 mwifiex_sdio_interrupt(struct sdio_func *func)
@@ -930,7 +930,7 @@ mwifiex_sdio_interrupt(struct sdio_func *func)
 		adapter->ps_state = PS_STATE_AWAKE;
 
 	mwifiex_interrupt_status(adapter);
-	queue_work(adapter->workqueue, &adapter->main_work);
+	mwifiex_main_process(adapter);
 }
 
 /*
@@ -1749,6 +1749,37 @@ mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
 		port, card->mp_data_port_mask);
 }
 
+static struct mmc_host *reset_host;
+static void sdio_card_reset_worker(struct work_struct *work)
+{
+	/* The actual reset operation must be run outside of driver thread.
+	 * This is because mmc_remove_host() will cause the device to be
+	 * instantly destroyed, and the driver then needs to end its thread,
+	 * leading to a deadlock.
+	 *
+	 * We run it in a totally independent workqueue.
+	 */
+
+	pr_err("Resetting card...\n");
+	mmc_remove_host(reset_host);
+	/* 20ms delay is based on experiment with sdhci controller */
+	mdelay(20);
+	mmc_add_host(reset_host);
+}
+static DECLARE_WORK(card_reset_work, sdio_card_reset_worker);
+
+/* This function resets the card */
+static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
+{
+	struct sdio_mmc_card *card = adapter->card;
+
+	if (work_pending(&card_reset_work))
+		return;
+
+	reset_host = card->func->card->host;
+	schedule_work(&card_reset_work);
+}
+
 static struct mwifiex_if_ops sdio_ops = {
 	.init_if = mwifiex_init_sdio,
 	.cleanup_if = mwifiex_cleanup_sdio,
@@ -1767,6 +1798,7 @@ static struct mwifiex_if_ops sdio_ops = {
 	.cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
 	.cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
 	.event_complete = mwifiex_sdio_event_complete,
+	.card_reset = mwifiex_sdio_card_reset,
 };
 
 /*
@@ -1804,6 +1836,7 @@ mwifiex_sdio_cleanup_module(void)
 	/* Set the flag as user is removing this module. */
 	user_rmmod = 1;
 
+	cancel_work_sync(&card_reset_work);
 	sdio_unregister_driver(&mwifiex_sdio);
 }