diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2010-07-22 20:36:28 +0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-07-24 19:57:53 +0400 |
| commit | c1b6d380b781b5238989a4bfba02450057670804 (patch) | |
| tree | 86f0acab0ce296b307150f25ab166191e5c3f6d1 /drivers/of/platform.c | |
| parent | 295960429675e17ec658320ebb24385727032bed (diff) | |
| download | linux-c1b6d380b781b5238989a4bfba02450057670804.tar.xz | |
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>
Diffstat (limited to 'drivers/of/platform.c')
| -rw-r--r-- | drivers/of/platform.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 712dfd866df0..f3f1ec81ef48 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -30,8 +30,13 @@ static int platform_driver_probe_shim(struct platform_device *pdev) pdrv = container_of(pdev->dev.driver, struct platform_driver, driver); ofpdrv = container_of(pdrv, struct of_platform_driver, platform_driver); + + /* There is an unlikely chance that an of_platform driver might match + * on a non-OF platform device. If so, then of_match_device() will + * come up empty. Return -EINVAL in this case so other drivers get + * the chance to bind. */ match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev); - return ofpdrv->probe(pdev, match); + return match ? ofpdrv->probe(pdev, match) : -EINVAL; } static void platform_driver_shutdown_shim(struct platform_device *pdev) |