[PATCH v3 3/5] pata_bk3710: clear status bits of BMISP on chipset initialization

From: Bartlomiej Zolnierkiewicz
Date: Wed Mar 22 2017 - 14:22:25 EST


Clear IORDYINT, INTRSTAT and DMAERROR bits of BMISP register
(value '1' needs to be written to the bit to clear it).

Suggested-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
---
drivers/ata/pata_bk3710.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/pata_bk3710.c b/drivers/ata/pata_bk3710.c
index f22e4bf..6c3bd5f 100644
--- a/drivers/ata/pata_bk3710.c
+++ b/drivers/ata/pata_bk3710.c
@@ -276,7 +276,7 @@ static void pata_bk3710_chipinit(void __iomem *base)
* (ATA_BMISP_INTRSTAT , CLEAR) |
* (ATA_BMISP_DMAERROR , CLEAR)
*/
- iowrite16(0, base + BK3710_BMISP);
+ iowrite16(0xE, base + BK3710_BMISP);

pata_bk3710_setpiomode(base, NULL, 0, 600, 0);
pata_bk3710_setpiomode(base, NULL, 1, 600, 0);
--
1.9.1