memory: tegra30-emc: Fix panic on suspend

Trying to suspend driver results in a crash if timings aren't available in
device-tree.

Reported-by: Jon Hunter <jonathanh@nvidia.com>
Fixes: e34212c75a68 ("memory: tegra: Introduce Tegra30 EMC driver")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c
index 6929980..0b6a5e4 100644 (file)
--- a/drivers/memory/tegra/tegra30-emc.c
+++ b/drivers/memory/tegra/tegra30-emc.c
@@ -1093,7 +1093,7 @@ static int tegra_emc_probe(struct platform_device *pdev)
        if (of_get_child_count(pdev->dev.of_node) == 0) {
                dev_info(&pdev->dev,
                         "device-tree node doesn't have memory timings\n");
-               return 0;
+               return -ENODEV;
        }
 
        np = of_parse_phandle(pdev->dev.of_node, "nvidia,memory-controller", 0);