Commit d777f98b authored Jun 11, 2013 by Tuomas Tynkkynen Committed by Greg Kroah-Hartman Jun 17, 2013

memory: tegra20-mc: Fix hang in IRQ handler.



In Tegra20 any memory controller interrupt would cause an
infinite loop in the IRQ handler.

Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 2c9b48ac

drivers/memory/tegra20-mc.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}