linux-kernel - [RFC 2/4] sdhci: sanity check for triggering interrupts thread

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1300486320-23607-3-git-send-email-lrodriguez@atheros.com>
Date:	Fri, 18 Mar 2011 15:11:58 -0700
From:	"Luis R. Rodriguez" <lrodriguez@...eros.com>
To:	<cjb@...top.org>
CC:	<linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<vmehta@...eros.com>, <naveen.singh@...eros.com>,
	<kvalo@...rom.com>, <j@...fi>,
	"Luis R. Rodriguez" <lrodriguez@...eros.com>,
	Naveen Singh <nsingh@...eros.com>,
	Vipin Mehta <Vipin.Mehta@...eros.com>
Subject: [RFC 2/4] sdhci: sanity check for triggering interrupts thread

Instead of just assuming an interrupt is pending and
processing it, ensure we have interrupts enabled first
prior to calling our IRQ thread processor.

Cc: Chris Ball <cjb@...top.org>
Cc: Kalle Valo <kvalo@...rom.com>
Cc: Naveen Singh <nsingh@...eros.com>
Cc: Vipin Mehta <Vipin.Mehta@...eros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@...eros.com>
---
 drivers/mmc/host/sdhci.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c95dfc2..7074870 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1616,8 +1616,11 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 
 	intmask &= ~SDHCI_INT_BUS_POWER;
 
-	if (intmask & SDHCI_INT_CARD_INT)
-		cardint = 1;
+	if (intmask & SDHCI_INT_CARD_INT) {
+		if (readl(host->ioaddr + SDHCI_INT_ENABLE) & SDHCI_INT_CARD_INT)
+			cardint = 1;
+	}
+
 
 	intmask &= ~SDHCI_INT_CARD_INT;
 
-- 
1.7.4.15.g7811d

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/