[PATCH] mmc: dw_mmc: clear INSTS register when initialize

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If pending interrupt for IDMAC exists when probe, it will call interrupt
handler unnecessarily.

Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
---
 drivers/mmc/host/dw_mmc.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 323c502..b0057a2 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2192,6 +2192,7 @@ int dw_mci_probe(struct dw_mci *host)
 
 	/* Clear the interrupts for the host controller */
 	mci_writel(host, RINTSTS, 0xFFFFFFFF);
+	mci_writel(host, IDSTS, 0xFFFFFFFF);
 	mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
 
 	/* Put in max timeout */
@@ -2243,6 +2244,7 @@ int dw_mci_probe(struct dw_mci *host)
 	 * receive ready and error such as transmit, receive timeout, crc error
 	 */
 	mci_writel(host, RINTSTS, 0xFFFFFFFF);
+	mci_writel(host, IDSTS, 0xFFFFFFFF);
 	mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER |
 		   SDMMC_INT_TXDR | SDMMC_INT_RXDR |
 		   DW_MCI_ERROR_FLAGS | SDMMC_INT_CD);
@@ -2393,6 +2395,7 @@ int dw_mci_resume(struct dw_mci *host)
 	mci_writel(host, FIFOTH, host->fifoth_val);
 
 	mci_writel(host, RINTSTS, 0xFFFFFFFF);
+	mci_writel(host, IDSTS, 0xFFFFFFFF);
 	mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER |
 		   SDMMC_INT_TXDR | SDMMC_INT_RXDR |
 		   DW_MCI_ERROR_FLAGS | SDMMC_INT_CD);
-- 
1.7.9.5

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