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[16/19] omap3+: sr: disable spamming interrupts

Message ID 1298116918-30744-17-git-send-email-nm@ti.com (mailing list archive)
State New, archived
Delegated to: Kevin Hilman
Headers show

Commit Message

Nishanth Menon Feb. 19, 2011, 12:01 p.m. UTC 
None
diff mbox

Patch

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index ad23b8d..0301186 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -209,8 +209,16 @@  static irqreturn_t sr_interrupt(int irq, void *data)
 		value = irqstat_to_notifier_v2(status);
 	}
 
-	if (sr_class->notify)
-		sr_class->notify(sr_info->voltdm, value);
+	/* Attempt some resemblence of recovery! */
+	if (!value) {
+		dev_err(&sr_info->pdev->dev, "%s: Spurious interrupt!"
+			"status = 0x%08x. Disabling to prevent spamming!!\n",
+			__func__, status);
+		disable_irq_nosync(sr_info->irq);
+	} else {
+		if (sr_class->notify)
+			sr_class->notify(sr_info->voltdm, value);
+	}
 
 	return IRQ_HANDLED;
 }