In 4-bit mode, SDIO interrupts are only reliable if clocks
are maintained.
So get an extra reference when that is the case.
Signed-off-by: NeilBrown <n...@brown.name>
---
drivers/mmc/core/sdio.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 5bc6c7dbbd60..f432b11677bd 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -227,6 +227,9 @@ static int sdio_enable_wide(struct mmc_card *card)
if (ret)
return ret;
+ /* Interrupts only work in 4bit mode if clocks stay on */
+ if (card->host->caps & MMC_CAP_SDIO_IRQ)
+ pm_runtime_get(card->host->parent);
return 1;
}
@@ -283,6 +286,8 @@ static int sdio_disable_wide(struct mmc_card *card)
return ret;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_1);
+ if (card->host->caps & MMC_CAP_SDIO_IRQ)
+ pm_runtime_put(card->host->parent);
return 0;
}
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