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authorDaniel Scally <djrscally@gmail.com>2021-11-28 23:24:55 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-12-03 16:42:43 +0100
commitc097af1d0a8483b44fa30e86b311991d76b6ae67 (patch)
treeb97424ff061edba2249b15017d256f86ff5fe1d1 /drivers/base
parente1b5186810cc7d4ec60447032636b8e6772dbbc6 (diff)
downloadlinux-next-c097af1d0a8483b44fa30e86b311991d76b6ae67.tar.gz
device property: Check fwnode->secondary when finding properties
fwnode_property_get_reference_args() searches for named properties against a fwnode_handle, but these could instead be against the fwnode's secondary. If the property isn't found against the primary, check the secondary to see if it's there instead. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Link: https://lore.kernel.org/r/20211128232455.39332-1-djrscally@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/property.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c
index f1f35b48ab8b..11e3d6308eb0 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -478,8 +478,17 @@ int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
unsigned int nargs, unsigned int index,
struct fwnode_reference_args *args)
{
- return fwnode_call_int_op(fwnode, get_reference_args, prop, nargs_prop,
- nargs, index, args);
+ int ret;
+
+ ret = fwnode_call_int_op(fwnode, get_reference_args, prop, nargs_prop,
+ nargs, index, args);
+
+ if (ret < 0 && !IS_ERR_OR_NULL(fwnode) &&
+ !IS_ERR_OR_NULL(fwnode->secondary))
+ ret = fwnode_call_int_op(fwnode->secondary, get_reference_args,
+ prop, nargs_prop, nargs, index, args);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(fwnode_property_get_reference_args);