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of/device: Protect against binding of_platform_drivers to non-OF devices
There is an unlikely chance of this situation is occurring, but it is easy to protect against. If a matching entry cannot be found in the of_match_table, then don't bind the driver. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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@ -30,8 +30,13 @@ static int platform_driver_probe_shim(struct platform_device *pdev)
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pdrv = container_of(pdev->dev.driver, struct platform_driver, driver);
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ofpdrv = container_of(pdrv, struct of_platform_driver, platform_driver);
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/* There is an unlikely chance that an of_platform driver might match
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* on a non-OF platform device. If so, then of_match_device() will
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* come up empty. Return -EINVAL in this case so other drivers get
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* the chance to bind. */
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match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev);
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return ofpdrv->probe(pdev, match);
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return match ? ofpdrv->probe(pdev, match) : -EINVAL;
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}
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static void platform_driver_shutdown_shim(struct platform_device *pdev)
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