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-rw-r--r--drivers/mmc/card/block.c2
-rw-r--r--drivers/mmc/core/mmc.c45
-rw-r--r--drivers/mmc/core/sd.c21
-rw-r--r--include/linux/mmc/card.h4
4 files changed, 55 insertions, 17 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1a3163f1407e..29d5d988a51c 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2448,7 +2448,6 @@ static int _mmc_blk_suspend(struct mmc_card *card)
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
- pm_runtime_get_sync(&card->dev);
mmc_queue_suspend(&md->queue);
list_for_each_entry(part_md, &md->part, part) {
mmc_queue_suspend(&part_md->queue);
@@ -2483,7 +2482,6 @@ static int mmc_blk_resume(struct mmc_card *card)
list_for_each_entry(part_md, &md->part, part) {
mmc_queue_resume(&part_md->queue);
}
- pm_runtime_put(&card->dev);
}
return 0;
}
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 0d060227cfc1..84d8694cf369 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1478,6 +1478,9 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
mmc_claim_host(host);
+ if (mmc_card_suspended(host->card))
+ goto out;
+
if (mmc_card_doing_bkops(host->card)) {
err = mmc_stop_bkops(host->card);
if (err)
@@ -1497,8 +1500,10 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
err = mmc_deselect_cards(host);
host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200);
- if (!err)
+ if (!err) {
mmc_power_off(host);
+ mmc_card_set_suspended(host->card);
+ }
out:
mmc_release_host(host);
return err;
@@ -1513,14 +1518,6 @@ static int mmc_suspend(struct mmc_host *host)
}
/*
- * Shutdown callback
- */
-static int mmc_shutdown(struct mmc_host *host)
-{
- return _mmc_suspend(host, false);
-}
-
-/*
* Resume callback from host.
*
* This function tries to determine if the same card is still present
@@ -1528,19 +1525,45 @@ static int mmc_shutdown(struct mmc_host *host)
*/
static int mmc_resume(struct mmc_host *host)
{
- int err;
+ int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
+
+ if (!mmc_card_suspended(host->card))
+ goto out;
+
mmc_power_up(host, host->card->ocr);
err = mmc_init_card(host, host->card->ocr, host->card);
- mmc_release_host(host);
+ mmc_card_clr_suspended(host->card);
+out:
+ mmc_release_host(host);
return err;
}
+/*
+ * Shutdown callback
+ */
+static int mmc_shutdown(struct mmc_host *host)
+{
+ int err = 0;
+
+ /*
+ * In a specific case for poweroff notify, we need to resume the card
+ * before we can shutdown it properly.
+ */
+ if (mmc_can_poweroff_notify(host->card) &&
+ !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE))
+ err = mmc_resume(host);
+
+ if (!err)
+ err = _mmc_suspend(host, false);
+
+ return err;
+}
/*
* Callback for runtime_suspend.
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 6ef84d0ca178..685796560f8b 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -1078,13 +1078,20 @@ static int mmc_sd_suspend(struct mmc_host *host)
BUG_ON(!host->card);
mmc_claim_host(host);
+
+ if (mmc_card_suspended(host->card))
+ goto out;
+
if (!mmc_host_is_spi(host))
err = mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
- if (!err)
+ if (!err) {
mmc_power_off(host);
- mmc_release_host(host);
+ mmc_card_set_suspended(host->card);
+ }
+out:
+ mmc_release_host(host);
return err;
}
@@ -1096,16 +1103,22 @@ static int mmc_sd_suspend(struct mmc_host *host)
*/
static int mmc_sd_resume(struct mmc_host *host)
{
- int err;
+ int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
+
+ if (!mmc_card_suspended(host->card))
+ goto out;
+
mmc_power_up(host, host->card->ocr);
err = mmc_sd_init_card(host, host->card->ocr, host->card);
- mmc_release_host(host);
+ mmc_card_clr_suspended(host->card);
+out:
+ mmc_release_host(host);
return err;
}
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 33d9a74f92e6..176fdf824b14 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -258,6 +258,7 @@ struct mmc_card {
#define MMC_CARD_REMOVED (1<<7) /* card has been removed */
#define MMC_STATE_HIGHSPEED_200 (1<<8) /* card is in HS200 mode */
#define MMC_STATE_DOING_BKOPS (1<<10) /* card is doing BKOPS */
+#define MMC_STATE_SUSPENDED (1<<11) /* card is suspended */
unsigned int quirks; /* card quirks */
#define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */
#define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */
@@ -424,6 +425,7 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
#define mmc_card_removed(c) ((c) && ((c)->state & MMC_CARD_REMOVED))
#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS)
+#define mmc_card_suspended(c) ((c)->state & MMC_STATE_SUSPENDED)
#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
@@ -436,6 +438,8 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
#define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS)
#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS)
+#define mmc_card_set_suspended(c) ((c)->state |= MMC_STATE_SUSPENDED)
+#define mmc_card_clr_suspended(c) ((c)->state &= ~MMC_STATE_SUSPENDED)
/*
* Quirk add/remove for MMC products.
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 15:40:14 +0000