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author | Dmitry Antipov <dmantipov@yandex.ru> | 2023-07-25 09:04:46 +0300 |
---|---|---|
committer | Kalle Valo <kvalo@kernel.org> | 2023-08-01 17:49:01 +0300 |
commit | 6c968e90198fbb2d923c4e47b7303c3ad2c25a71 (patch) | |
tree | e267c17c881e4298c5c228688e921a3388cb73ca | |
parent | 2c531d28f8e938db0dfdee16f251b1ca55bc4a8b (diff) | |
download | linux-stable-6c968e90198fbb2d923c4e47b7303c3ad2c25a71.tar.gz linux-stable-6c968e90198fbb2d923c4e47b7303c3ad2c25a71.tar.bz2 linux-stable-6c968e90198fbb2d923c4e47b7303c3ad2c25a71.zip |
wifi: libertas: cleanup SDIO reset
Embed SDIO reset worker in 'struct if_sdio_card' and so
drop 'reset_host' and 'card_reset_work' static variables,
adjust related code. Not sure whether it's possible to do
something useful on 'mmc_add_host()' error, so just add
'dev_err()' to emit an error message.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230725060531.72968-4-dmantipov@yandex.ru
-rw-r--r-- | drivers/net/wireless/marvell/libertas/if_sdio.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/drivers/net/wireless/marvell/libertas/if_sdio.c b/drivers/net/wireless/marvell/libertas/if_sdio.c index c72081cf8a85..524034699972 100644 --- a/drivers/net/wireless/marvell/libertas/if_sdio.c +++ b/drivers/net/wireless/marvell/libertas/if_sdio.c @@ -123,6 +123,7 @@ struct if_sdio_card { struct workqueue_struct *workqueue; struct work_struct packet_worker; + struct work_struct reset_worker; u8 rx_unit; }; @@ -1022,10 +1023,19 @@ 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) { + int ret; + const char *name; + struct device *dev; + struct if_sdio_card *card; + struct mmc_host *reset_host; + + card = container_of(work, struct if_sdio_card, reset_worker); + reset_host = card->func->card->host; + name = card->priv->dev->name; + dev = &card->func->dev; + /* * The actual reset operation must be run outside of lbs_thread. This * is because mmc_remove_host() will cause the device to be instantly @@ -1036,21 +1046,19 @@ static void if_sdio_reset_card_worker(struct work_struct *work) * instance for that reason. */ - pr_info("Resetting card..."); + dev_info(dev, "resetting card %s...", name); mmc_remove_host(reset_host); - mmc_add_host(reset_host); + ret = mmc_add_host(reset_host); + if (ret) + dev_err(dev, "%s: can't add mmc host, error %d\n", name, ret); } -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); + if (!work_pending(&card->reset_worker)) + schedule_work(&card->reset_worker); } static int if_sdio_power_save(struct lbs_private *priv) @@ -1178,6 +1186,8 @@ static int if_sdio_probe(struct sdio_func *func, ret = -ENOMEM; goto err_queue; } + + INIT_WORK(&card->reset_worker, if_sdio_reset_card_worker); INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); init_waitqueue_head(&card->pwron_waitq); @@ -1229,6 +1239,7 @@ err_activate_card: lbs_remove_card(priv); free: cancel_work_sync(&card->packet_worker); + cancel_work_sync(&card->reset_worker); destroy_workqueue(card->workqueue); err_queue: list_for_each_entry_safe(packet, tmp, &card->packets, list) @@ -1271,6 +1282,7 @@ static void if_sdio_remove(struct sdio_func *func) lbs_remove_card(card->priv); cancel_work_sync(&card->packet_worker); + cancel_work_sync(&card->reset_worker); destroy_workqueue(card->workqueue); list_for_each_entry_safe(packet, tmp, &card->packets, list) @@ -1394,8 +1406,6 @@ 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); } |