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 <neil@xxxxxxxxxx> --- 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
