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authorJohn W. Linville <linville@tuxdriver.com>2011-06-24 15:25:51 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-06-24 15:25:51 -0400
commit36099365c7cc64e5184b66b6eb094950a13f540c (patch)
treec91b9f3719f94864a62f2d15a71aaecd54c56711 /drivers/net/wireless/libertas
parent22c8c9343258feda9ea9ebb9e5f8cbb727b69454 (diff)
parentf70490e6078abe1182437e629f67a7f0b6f08cd4 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts: drivers/net/wireless/rtlwifi/pci.c include/linux/netlink.h
Diffstat (limited to 'drivers/net/wireless/libertas')
-rw-r--r--drivers/net/wireless/libertas/if_sdio.c34
-rw-r--r--drivers/net/wireless/libertas/if_spi.c6
2 files changed, 37 insertions, 3 deletions
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 4fa0be9943f9..e0286cfbc91d 100644
--- a/drivers/net/wireless/libertas/if_spi.c
+++ b/drivers/net/wireless/libertas/if_spi.c
@@ -1034,7 +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;
@@ -1082,8 +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;