11 files changed, 48 insertions, 3 deletions

diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c
index 5d637af2d7c3..b456a53b64b1 100644
--- a/drivers/net/wireless/libertas/cfg.c
+++ b/drivers/net/wireless/libertas/cfg.c
@@ -8,6 +8,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/hardirq.h>
 #include <linux/sched.h>
 #include <linux/wait.h>
 #include <linux/slab.h>
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index 71c8f3fccfa1..9dcf967e1ee4 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -3,6 +3,7 @@
  * It prepares command and sends it to firmware when it is ready.
  */
 
+#include <linux/hardirq.h>
 #include <linux/kfifo.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c
index 207fc361db84..2ffe5a1ff003 100644
--- a/drivers/net/wireless/libertas/cmdresp.c
+++ b/drivers/net/wireless/libertas/cmdresp.c
@@ -3,6 +3,7 @@
  * responses as well as events generated by firmware.
  */
 
+#include <linux/hardirq.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 23250f621761..1af182778844 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -1,6 +1,7 @@
 #include <linux/dcache.h>
 #include <linux/debugfs.h>
 #include <linux/delay.h>
+#include <linux/hardirq.h>
 #include <linux/mm.h>
 #include <linux/string.h>
 #include <linux/slab.h>
diff --git a/drivers/net/wireless/libertas/ethtool.c b/drivers/net/wireless/libertas/ethtool.c
index 29dbce4a9f86..4dfb3bfd2cf3 100644
--- a/drivers/net/wireless/libertas/ethtool.c
+++ b/drivers/net/wireless/libertas/ethtool.c
@@ -1,3 +1,4 @@
+#include <linux/hardirq.h>
 #include <linux/netdevice.h>
 #include <linux/ethtool.h>
 #include <linux/delay.h>
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 224e9853c480..387786e1b394 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -892,6 +892,37 @@ static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv)
 
 }
 
+static struct mmc_host *reset_host;
+
+static void if_sdio_reset_card_worker(struct work_struct *work)
+{
+        /*
+         * The actual reset operation must be run outside of lbs_thread. This
+         * is because mmc_remove_host() will cause the device to be instantly
+         * destroyed, and the libertas driver then needs to end lbs_thread,
+         * leading to a deadlock.
+         *
+         * We run it in a workqueue totally independent from the if_sdio_card
+         * instance for that reason.
+         */
+
+        pr_info("Resetting card...");
+        mmc_remove_host(reset_host);
+        mmc_add_host(reset_host);
+}
+static DECLARE_WORK(card_reset_work, if_sdio_reset_card_worker);
+
+static void if_sdio_reset_card(struct lbs_private *priv)
+{
+        struct if_sdio_card *card = priv->card;
+
+        if (work_pending(&card_reset_work))
+                return;
+
+        reset_host = card->func->card->host;
+        schedule_work(&card_reset_work);
+}
+
 /*******************************************************************/
 /* SDIO callbacks                                                  */
 /*******************************************************************/
@@ -1065,6 +1096,7 @@ static int if_sdio_probe(struct sdio_func *func,
         priv->enter_deep_sleep = if_sdio_enter_deep_sleep;
         priv->exit_deep_sleep = if_sdio_exit_deep_sleep;
         priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup;
+        priv->reset_card = if_sdio_reset_card;
 
         sdio_claim_host(func);
 
@@ -1301,6 +1333,8 @@ static void __exit if_sdio_exit_module(void)
         /* Set the flag as user is removing this module. */
         user_rmmod = 1;
 
+        cancel_work_sync(&card_reset_work);
+
         sdio_unregister_driver(&if_sdio_driver);
 
         lbs_deb_leave(LBS_DEB_SDIO);
diff --git a/drivers/net/wireless/libertas/if_spi.c b/drivers/net/wireless/libertas/if_spi.c
index 463352c890d7..e0286cfbc91d 100644
--- a/drivers/net/wireless/libertas/if_spi.c
+++ b/drivers/net/wireless/libertas/if_spi.c
@@ -19,6 +19,8 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/hardirq.h>
+#include <linux/interrupt.h>
 #include <linux/moduleparam.h>
 #include <linux/firmware.h>
 #include <linux/jiffies.h>
@@ -1032,7 +1034,6 @@ static irqreturn_t if_spi_host_interrupt(int irq, void *dev_id)
 static int if_spi_init_card(struct if_spi_card *card)
 {
         struct lbs_private *priv = card->priv;
-        struct spi_device *spi = card->spi;
         int err, i;
         u32 scratch;
         const struct firmware *helper = NULL;
@@ -1080,8 +1081,9 @@ static int if_spi_init_card(struct if_spi_card *card)
                                 "attached to SPI bus_num %d, chip_select %d. "
                                 "spi->max_speed_hz=%d\n",
                                 card->card_id, card->card_rev,
-                                spi->master->bus_num, spi->chip_select,
-                                spi->max_speed_hz);
+                                card->spi->master->bus_num,
+                                card->spi->chip_select,
+                                card->spi->max_speed_hz);
                 err = if_spi_prog_helper_firmware(card, helper);
                 if (err)
                         goto out;
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 8c40949cb076..cf3d2c8e1969 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -9,6 +9,7 @@
 #include <linux/moduleparam.h>
 #include <linux/delay.h>
 #include <linux/etherdevice.h>
+#include <linux/hardirq.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/kthread.h>
diff --git a/drivers/net/wireless/libertas/mesh.c b/drivers/net/wireless/libertas/mesh.c
index 24cf06680c6b..7969d104189d 100644
--- a/drivers/net/wireless/libertas/mesh.c
+++ b/drivers/net/wireless/libertas/mesh.c
@@ -2,6 +2,7 @@
 
 #include <linux/delay.h>
 #include <linux/etherdevice.h>
+#include <linux/hardirq.h>
 #include <linux/netdevice.h>
 #include <linux/if_ether.h>
 #include <linux/if_arp.h>
diff --git a/drivers/net/wireless/libertas/rx.c b/drivers/net/wireless/libertas/rx.c
index fdb0448301a0..bfb8898ae518 100644
--- a/drivers/net/wireless/libertas/rx.c
+++ b/drivers/net/wireless/libertas/rx.c
@@ -5,6 +5,7 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/etherdevice.h>
+#include <linux/hardirq.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <net/cfg80211.h>
diff --git a/drivers/net/wireless/libertas/tx.c b/drivers/net/wireless/libertas/tx.c
index bbb95f88dc01..f19495b178f6 100644
--- a/drivers/net/wireless/libertas/tx.c
+++ b/drivers/net/wireless/libertas/tx.c
@@ -1,6 +1,7 @@
 /*
  * This file contains the handling of TX in wlan driver.
  */
+#include <linux/hardirq.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/sched.h>