[PATCH v1 1/6] pwm: tegra: Check for match_data being NULL

It's unlikely but not impossible that of_device_get_match_data() returns
NULL. Handle this case instead of triggering a NULL pointer exception.

Signed-off-by: Uwe Kleine-König <[email protected]>
---
 drivers/pwm/pwm-tegra.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index 5cdbe120ba2d..53743f83869a 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -322,6 +322,13 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 	int ret;
 
 	soc = of_device_get_match_data(&pdev->dev);
+	if (!soc)
+		/*
+		 * This can only happen if pdev was matched via pdev->name
+		 * (which should not happen today) or in combination with a
+		 * driver override.
+		 */
+		return dev_err_probe(dev, -ENODEV, "Unsupported device\n");
 
 	chip = devm_pwmchip_alloc(&pdev->dev, soc->num_channels, sizeof(*pc));
 	if (IS_ERR(chip))
-- 
2.55.0.11.g153666a7d9bb