From: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> This fixes NULL pointer dereference when the primary fwnode handle does not exist, for example with PCI devices that do not have ACPI companion. Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> --- drivers/base/property.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/base/property.c b/drivers/base/property.c index 0b22c8a..b3429cc 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -218,7 +218,7 @@ bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname) bool ret; ret = __fwnode_property_present(fwnode, propname); - if (ret == false && fwnode->secondary) + if (ret == false && fwnode && fwnode->secondary) ret = __fwnode_property_present(fwnode->secondary, propname); return ret; } @@ -423,7 +423,7 @@ EXPORT_SYMBOL_GPL(device_property_match_string); int _ret_; \ _ret_ = FWNODE_PROP_READ(_fwnode_, _propname_, _type_, _proptype_, \ _val_, _nval_); \ - if (_ret_ == -EINVAL && _fwnode_->secondary) \ + if (_ret_ == -EINVAL && _fwnode_ && _fwnode_->secondary) \ _ret_ = FWNODE_PROP_READ(_fwnode_->secondary, _propname_, _type_, \ _proptype_, _val_, _nval_); \ _ret_; \ @@ -593,7 +593,7 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode, int ret; ret = __fwnode_property_read_string_array(fwnode, propname, val, nval); - if (ret == -EINVAL && fwnode->secondary) + if (ret == -EINVAL && fwnode && fwnode->secondary) ret = __fwnode_property_read_string_array(fwnode->secondary, propname, val, nval); return ret; @@ -621,7 +621,7 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode, int ret; ret = __fwnode_property_read_string(fwnode, propname, val); - if (ret == -EINVAL && fwnode->secondary) + if (ret == -EINVAL && fwnode && fwnode->secondary) ret = __fwnode_property_read_string(fwnode->secondary, propname, val); return ret; -- 2.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
