Before enabling SDIO irqs, clear the status bit, so we discard old and
stale interrupts. Needed to get two wireless cards working.
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/tmio_mmc_pio.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index d6033620a45c12..ebe3e12f0083dd 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -134,12 +134,21 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
struct tmio_mmc_host *host = mmc_priv(mmc);
if (enable && !host->sdio_irq_enabled) {
+ u16 sdio_status;
+
/* Keep device active while SDIO irq is enabled */
pm_runtime_get_sync(mmc_dev(mmc));
- host->sdio_irq_enabled = true;
+ host->sdio_irq_enabled = true;
host->sdio_irq_mask = TMIO_SDIO_MASK_ALL &
~TMIO_SDIO_STAT_IOIRQ;
+
+ /* Clear obsolete interrupts before enabling */
+ sdio_status = sd_ctrl_read16(host, CTL_SDIO_STATUS) & ~TMIO_SDIO_MASK_ALL;
+ if (host->pdata->flags & TMIO_MMC_SDIO_STATUS_SETBITS)
+ sdio_status |= 6;
+ sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status);
+
sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
} else if (!enable && host->sdio_irq_enabled) {
host->sdio_irq_mask = TMIO_SDIO_MASK_ALL;
--
2.11.0
