[v2,15/18] omap3+: sr: disable spamming interrupts

Commit Message

Nishanth Menon March 2, 2011, 10:55 a.m. UTC

None

Patch

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index 49a04ea..d62da3d 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;
 }