In Tegra20 any memory controller interrupt would cause an
infinite loop in the IRQ handler.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@xxxxxxxxxx>
---
drivers/memory/tegra20-mc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/memory/tegra20-mc.c b/drivers/memory/tegra20-mc.c
index 2ca5f28..0548eea 100644
--- a/drivers/memory/tegra20-mc.c
+++ b/drivers/memory/tegra20-mc.c
@@ -193,8 +193,11 @@ static irqreturn_t tegra20_mc_isr(int irq, void *data)
mask &= stat;
if (!mask)
return IRQ_NONE;
- while ((bit = ffs(mask)) != 0)
+ while ((bit = ffs(mask)) != 0) {
tegra20_mc_decode(mc, bit - 1);
+ mask &= ~BIT(bit - 1);
+ }
+
mc_writel(mc, stat, MC_INTSTATUS);
return IRQ_HANDLED;
}
--
1.8.1.5
--
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