Merge branch 'for-linus' into for-next

Back-merge to apply the tasklet conversion patches that are based
on the already applied tasklet API changes on 5.9-rc4.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 files changed, 68 insertions, 43 deletions

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 7896952de1ac..fa313b634135 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -312,10 +312,7 @@ static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
 
 	mutex_lock(&block_mutex);
 	if (md) {
-		if (md->usage == 2)
-			check_disk_change(bdev);
 		ret = 0;
-
 		if ((mode & FMODE_WRITE) && md->read_only) {
 			mmc_blk_put(md);
 			ret = -EROFS;
@@ -1446,7 +1443,7 @@ static void mmc_blk_cqe_req_done(struct mmc_request *mrq)
 	 */
 	if (mq->in_recovery)
 		mmc_blk_cqe_complete_rq(mq, req);
-	else
+	else if (likely(!blk_should_fake_timeout(req->q)))
 		blk_mq_complete_request(req);
 }
 
@@ -1926,7 +1923,7 @@ static void mmc_blk_hsq_req_done(struct mmc_request *mrq)
 	 */
 	if (mq->in_recovery)
 		mmc_blk_cqe_complete_rq(mq, req);
-	else
+	else if (likely(!blk_should_fake_timeout(req->q)))
 		blk_mq_complete_request(req);
 }
 
@@ -1936,7 +1933,7 @@ void mmc_blk_mq_complete(struct request *req)
 
 	if (mq->use_cqe)
 		mmc_blk_cqe_complete_rq(mq, req);
-	else
+	else if (likely(!blk_should_fake_timeout(req->q)))
 		mmc_blk_mq_complete_rq(mq, req);
 }
 
@@ -1988,7 +1985,7 @@ static void mmc_blk_mq_post_req(struct mmc_queue *mq, struct request *req)
 	 */
 	if (mq->in_recovery)
 		mmc_blk_mq_complete_rq(mq, req);
-	else
+	else if (likely(!blk_should_fake_timeout(req->q)))
 		blk_mq_complete_request(req);
 
 	mmc_blk_mq_dec_in_flight(mq, req);
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8d2b808e9b58..8ccae6452b9c 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1455,12 +1455,12 @@ void mmc_detach_bus(struct mmc_host *host)
 void _mmc_detect_change(struct mmc_host *host, unsigned long delay, bool cd_irq)
 {
 	/*
-	 * If the device is configured as wakeup, we prevent a new sleep for
-	 * 5 s to give provision for user space to consume the event.
+	 * Prevent system sleep for 5s to allow user space to consume the
+	 * corresponding uevent. This is especially useful, when CD irq is used
+	 * as a system wakeup, but doesn't hurt in other cases.
 	 */
-	if (cd_irq && !(host->caps & MMC_CAP_NEEDS_POLL) &&
-		device_can_wakeup(mmc_dev(host)))
-		pm_wakeup_event(mmc_dev(host), 5000);
+	if (cd_irq && !(host->caps & MMC_CAP_NEEDS_POLL))
+		__pm_wakeup_event(host->ws, 5000);
 
 	host->detect_change = 1;
 	mmc_schedule_delayed_work(&host->detect, delay);
@@ -2303,7 +2303,6 @@ void mmc_start_host(struct mmc_host *host)
 {
 	host->f_init = max(min(freqs[0], host->f_max), host->f_min);
 	host->rescan_disable = 0;
-	host->ios.power_mode = MMC_POWER_UNDEFINED;
 
 	if (!(host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP)) {
 		mmc_claim_host(host);
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index c8768726d925..ce43f7573d80 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -15,6 +15,7 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/pagemap.h>
+#include <linux/pm_wakeup.h>
 #include <linux/export.h>
 #include <linux/leds.h>
 #include <linux/slab.h>
@@ -36,6 +37,7 @@ static DEFINE_IDA(mmc_host_ida);
 static void mmc_host_classdev_release(struct device *dev)
 {
 	struct mmc_host *host = cls_dev_to_mmc_host(dev);
+	wakeup_source_unregister(host->ws);
 	ida_simple_remove(&mmc_host_ida, host->index);
 	kfree(host);
 }
@@ -275,6 +277,8 @@ int mmc_of_parse(struct mmc_host *host)
 		host->caps |= MMC_CAP_SDIO_IRQ;
 	if (device_property_read_bool(dev, "full-pwr-cycle"))
 		host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
+	if (device_property_read_bool(dev, "full-pwr-cycle-in-suspend"))
+		host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND;
 	if (device_property_read_bool(dev, "keep-power-in-suspend"))
 		host->pm_caps |= MMC_PM_KEEP_POWER;
 	if (device_property_read_bool(dev, "wakeup-source") ||
@@ -400,6 +404,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 	host->index = err;
 
 	dev_set_name(&host->class_dev, "mmc%d", host->index);
+	host->ws = wakeup_source_register(NULL, dev_name(&host->class_dev));
 
 	host->parent = dev;
 	host->class_dev.parent = dev;
@@ -431,6 +436,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 
 	host->fixed_drv_type = -EINVAL;
 	host->ios.power_delay_ms = 10;
+	host->ios.power_mode = MMC_POWER_UNDEFINED;
 
 	return host;
 }
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 4203303f946a..b3fa193de846 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -2038,7 +2038,8 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
 		goto out;
 
 	if (mmc_can_poweroff_notify(host->card) &&
-		((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend))
+	    ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend ||
+	     (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND)))
 		err = mmc_poweroff_notify(host->card, notify_type);
 	else if (mmc_can_sleep(host->card))
 		err = mmc_sleep(host);
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 4b1eb89b401d..6c022ef0f84d 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -203,7 +203,7 @@ static unsigned int mmc_get_max_segments(struct mmc_host *host)
 
 /**
  * mmc_init_request() - initialize the MMC-specific per-request data
- * @q: the request queue
+ * @mq: the request queue
  * @req: the request
  * @gfp: memory allocation policy
  */
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index 472fa2fdcf13..d68e6e513a4f 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -14,7 +14,7 @@
 
 #include "card.h"
 
-static const struct mmc_fixup mmc_blk_fixups[] = {
+static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
 #define INAND_CMD38_ARG_EXT_CSD  113
 #define INAND_CMD38_ARG_ERASE    0x00
 #define INAND_CMD38_ARG_TRIM     0x01
@@ -102,7 +102,7 @@ static const struct mmc_fixup mmc_blk_fixups[] = {
 	END_FIXUP
 };
 
-static const struct mmc_fixup mmc_ext_csd_fixups[] = {
+static const struct mmc_fixup __maybe_unused mmc_ext_csd_fixups[] = {
 	/*
 	 * Certain Hynix eMMC 4.41 cards might get broken when HPI feature
 	 * is used so disable the HPI feature for such buggy cards.
@@ -120,7 +120,7 @@ static const struct mmc_fixup mmc_ext_csd_fixups[] = {
 };
 
 
-static const struct mmc_fixup sdio_fixup_methods[] = {
+static const struct mmc_fixup __maybe_unused sdio_fixup_methods[] = {
 	SDIO_FIXUP(SDIO_VENDOR_ID_TI_WL1251, SDIO_DEVICE_ID_TI_WL1251,
 		   add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
 
diff --git a/drivers/mmc/core/regulator.c b/drivers/mmc/core/regulator.c
index 96b1d15045d6..609201a467ef 100644
--- a/drivers/mmc/core/regulator.c
+++ b/drivers/mmc/core/regulator.c
@@ -159,6 +159,8 @@ static int mmc_regulator_set_voltage_if_supported(struct regulator *regulator,
 
 /**
  * mmc_regulator_set_vqmmc - Set VQMMC as per the ios
+ * @mmc: the host to regulate
+ * @ios: io bus settings
  *
  * For 3.3V signaling, we try to match VQMMC to VMMC as closely as possible.
  * That will match the behavior of old boards where VQMMC and VMMC were supplied
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index b65b26f76d71..7b40553d3934 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -176,15 +176,18 @@ static int sdio_read_cccr(struct mmc_card *card, u32 ocr)
 			if (mmc_host_uhs(card->host)) {
 				if (data & SDIO_UHS_DDR50)
 					card->sw_caps.sd3_bus_mode
-						|= SD_MODE_UHS_DDR50;
+						|= SD_MODE_UHS_DDR50 | SD_MODE_UHS_SDR50
+							| SD_MODE_UHS_SDR25 | SD_MODE_UHS_SDR12;
 
 				if (data & SDIO_UHS_SDR50)
 					card->sw_caps.sd3_bus_mode
-						|= SD_MODE_UHS_SDR50;
+						|= SD_MODE_UHS_SDR50 | SD_MODE_UHS_SDR25
+							| SD_MODE_UHS_SDR12;
 
 				if (data & SDIO_UHS_SDR104)
 					card->sw_caps.sd3_bus_mode
-						|= SD_MODE_UHS_SDR104;
+						|= SD_MODE_UHS_SDR104 | SD_MODE_UHS_SDR50
+							| SD_MODE_UHS_SDR25 | SD_MODE_UHS_SDR12;
 			}
 
 			ret = mmc_io_rw_direct(card, 0, 0,
@@ -303,30 +306,49 @@ static int sdio_disable_wide(struct mmc_card *card)
 	return 0;
 }
 
+static int sdio_disable_4bit_bus(struct mmc_card *card)
+{
+	int err;
+
+	if (card->type == MMC_TYPE_SDIO)
+		goto out;
+
+	if (!(card->host->caps & MMC_CAP_4_BIT_DATA))
+		return 0;
+
+	if (!(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
+		return 0;
+
+	err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1);
+	if (err)
+		return err;
+
+out:
+	return sdio_disable_wide(card);
+}
+
 
 static int sdio_enable_4bit_bus(struct mmc_card *card)
 {
 	int err;
 
+	err = sdio_enable_wide(card);
+	if (err <= 0)
+		return err;
 	if (card->type == MMC_TYPE_SDIO)
-		err = sdio_enable_wide(card);
-	else if ((card->host->caps & MMC_CAP_4_BIT_DATA) &&
-		 (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
+		goto out;
+
+	if (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4) {
 		err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
-		if (err)
+		if (err) {
+			sdio_disable_wide(card);
 			return err;
-		err = sdio_enable_wide(card);
-		if (err <= 0)
-			mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1);
-	} else
-		return 0;
-
-	if (err > 0) {
-		mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
-		err = 0;
+		}
 	}
+out:
+	mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
 
-	return err;
+	return 0;
 }
 
 
@@ -518,10 +540,8 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card)
 	max_rate = min_not_zero(card->quirk_max_rate,
 				card->sw_caps.uhs_max_dtr);
 
-	if (bus_speed) {
-		mmc_set_timing(card->host, timing);
-		mmc_set_clock(card->host, max_rate);
-	}
+	mmc_set_timing(card->host, timing);
+	mmc_set_clock(card->host, max_rate);
 
 	return 0;
 }
@@ -972,7 +992,7 @@ static int mmc_sdio_suspend(struct mmc_host *host)
 	mmc_claim_host(host);
 
 	if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host))
-		sdio_disable_wide(host->card);
+		sdio_disable_4bit_bus(host->card);
 
 	if (!mmc_card_keep_power(host)) {
 		mmc_power_off(host);
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index 2ba00acf64e6..79dbf90216b5 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -133,7 +133,7 @@ int sdio_disable_func(struct sdio_func *func)
 
 err:
 	pr_debug("SDIO: Failed to disable device %s\n", sdio_func_id(func));
-	return -EIO;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(sdio_disable_func);
 
@@ -709,6 +709,7 @@ EXPORT_SYMBOL_GPL(sdio_get_host_pm_caps);
 /**
  *	sdio_set_host_pm_flags - set wanted host power management capabilities
  *	@func: SDIO function attached to host
+ *	@flags: Power Management flags to set
  *
  *	Set a capability bitmask corresponding to wanted host controller
  *	power management features for the upcoming suspend state.
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
index 3ffe4ff49aa7..4b1f7c966ec8 100644
--- a/drivers/mmc/core/sdio_irq.c
+++ b/drivers/mmc/core/sdio_irq.c
@@ -139,11 +139,10 @@ EXPORT_SYMBOL_GPL(sdio_signal_irq);
 static int sdio_irq_thread(void *_host)
 {
 	struct mmc_host *host = _host;
-	struct sched_param param = { .sched_priority = 1 };
 	unsigned long period, idle_period;
 	int ret;
 
-	sched_setscheduler(current, SCHED_FIFO, &param);
+	sched_set_fifo_low(current);
 
 	/*
 	 * We want to allow for SDIO cards to work even on non SDIO