--- zzzz-none-000/linux-3.10.107/drivers/memory/tegra20-mc.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/memory/tegra20-mc.c	2021-02-04 17:41:59.000000000 +0000
@@ -193,8 +193,11 @@
 	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;
 }
@@ -215,8 +218,6 @@
 		struct resource *res;
 
 		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
-		if (!res)
-			return -ENODEV;
 		mc->regs[i] = devm_ioremap_resource(&pdev->dev, res);
 		if (IS_ERR(mc->regs[i]))
 			return PTR_ERR(mc->regs[i]);
@@ -242,7 +243,6 @@
 	.probe = tegra20_mc_probe,
 	.driver = {
 		.name = DRV_NAME,
-		.owner = THIS_MODULE,
 		.of_match_table = tegra20_mc_of_match,
 	},
 };