[PATCH V2 3/5] mmc: mmci: fix clear of busy detect status

[Ludovic Barre <ludovic.Barre@st.com>]

From: Ludovic Barre <ludovic.barre@st.com>

The "busy_detect_flag" is used to read/clear busy value of
mmci status. The "busy_detect_mask" is used to manage busy irq of
mmci mask.
For sdmmc variant, the 2 properties have not the same offset.
To clear the busyd0 status bit, we must add busy detect flag,
the mmci mask is not enough.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
 drivers/mmc/host/mmci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index a040f54..3cd52e8 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1517,7 +1517,8 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
 		 * to make sure that both start and end interrupts are always
 		 * cleared one after the other.
 		 */
-		status &= readl(host->base + MMCIMASK0);
+		status &= readl(host->base + MMCIMASK0) |
+			host->variant->busy_detect_flag;
 		if (host->variant->busy_detect)
 			writel(status & ~host->variant->busy_detect_mask,
 			       host->base + MMCICLEAR);
-- 
2.7.4