linux-kernel - [PATCH V1 5/8] scsi: ufs: fix interrupt status clears

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Message-Id: <1368439340-26346-6-git-send-email-draviv@codeaurora.org>
Date:	Mon, 13 May 2013 13:02:15 +0300
From:	Dolev Raviv <draviv@...eaurora.org>
To:	linux-scsi@...r.kernel.org
Cc:	linux-arm-msm@...r.kernel.org, Dolev Raviv <draviv@...eaurora.org>,
	Seungwon Jeon <tgih.jun@...sung.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH V1 5/8] scsi: ufs: fix interrupt status clears

There is no need to check the version to clear
the interrupt status. And the order is changed
prior to actual handling.

Signed-off-by: Seungwon Jeon <tgih.jun@...sung.com>
Tested-by: Maya Erez <merez@...eaurora.org>
Acked-by: Santosh Y <santoshsy@...il.com>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c342a38..f4293d1 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1478,11 +1478,8 @@ static irqreturn_t ufshcd_intr(int irq, void *__hba)
 	intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
 
 	if (intr_status) {
+		ufshcd_writel(hba, intr_status, REG_INTERRUPT_STATUS);
 		ufshcd_sl_intr(hba, intr_status);
-
-		/* If UFSHCI 1.0 then clear interrupt status register */
-		if (hba->ufs_version == UFSHCI_VERSION_10)
-			ufshcd_writel(hba, intr_status, REG_INTERRUPT_STATUS);
 		retval = IRQ_HANDLED;
 	}
 	spin_unlock(hba->host->host_lock);
-- 
1.7.6

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