From: Wolfram Sang <wsa+renesas@...>

commit 90935eb303e0d12f3d3d0383262e65290321f5f6 upstream.

The reset callback may clear the internal card detect interrupts, so
make sure to reenable them if needed.

Fixes: b4d86f37eacb ("mmc: renesas_sdhi: do hard reset if possible")
Reported-by: Biju Das <biju.das.jz@...>
Signed-off-by: Wolfram Sang <wsa+renesas@...>
Cc: stable@...
Link: https://lore.kernel.org/r/20211028195149.8003-1-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@...>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
---
drivers/mmc/host/tmio_mmc_core.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index bb5eb478b6cf..690094b0b6a8 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -195,6 +195,10 @@ static void tmio_mmc_reset(struct tmio_mmc_host *host)
sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, host->sdcard_irq_mask_all);
host->sdcard_irq_mask = host->sdcard_irq_mask_all;

+ if (host->native_hotplug)
+ tmio_mmc_enable_mmc_irqs(host,
+ TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
+
tmio_mmc_set_bus_width(host, host->mmc->ios.bus_width);

if (host->pdata->flags & TMIO_MMC_SDIO_IRQ) {
@@ -954,8 +958,15 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
case MMC_POWER_OFF:
tmio_mmc_power_off(host);
/* For R-Car Gen2+, we need to reset SDHI specific SCC */
- if (host->pdata->flags & TMIO_MMC_MIN_RCAR2)
+ if (host->pdata->flags & TMIO_MMC_MIN_RCAR2) {
host->reset(host);
+
+ if (host->native_hotplug)
+ tmio_mmc_enable_mmc_irqs(host,
+ TMIO_STAT_CARD_REMOVE |
+ TMIO_STAT_CARD_INSERT);
+ }
+
host->set_clock(host, 0);
break;
case MMC_POWER_UP:
@@ -1192,10 +1203,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
_host->set_clock(_host, 0);
tmio_mmc_reset(_host);

- if (_host->native_hotplug)
- tmio_mmc_enable_mmc_irqs(_host,
- TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
-
spin_lock_init(&_host->lock);
mutex_init(&_host->ios_lock);

--
2.17.1