From: Elizaveta Gorina <s02220065@xxxxxxxxxxxxx>
If the device is unavailable, of_reserved_mem_device_init_by_name
returns 0, and emc->nominal is not initialized and the null pointer
is dereferenced.
Make a return from the tegra210_emc_probe function when emc->nominal
is equal to the null pointer.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 0553d7b204ef ("memory: tegra: Support derated timings on Tegra210")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Elizaveta Gorina <s02220065@xxxxxxxxxxxxx>
---
drivers/memory/tegra/tegra210-emc-core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/memory/tegra/tegra210-emc-core.c b/drivers/memory/tegra/tegra210-emc-core.c
index 78ca1d6c0977..a49a5e36ba34 100644
--- a/drivers/memory/tegra/tegra210-emc-core.c
+++ b/drivers/memory/tegra/tegra210-emc-core.c
@@ -1865,6 +1865,9 @@ static int tegra210_emc_probe(struct platform_device *pdev)
emc->num_timings);
if (err < 0)
goto release;
+ } else {
+ err = -ENODEV;
+ goto release;
}
if (emc->derated) {
--
2.25.1
