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device property: Check fwnode->secondary when finding properties

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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>
This commit is contained in:
Daniel Scally 2021-11-28 23:24:55 +00:00 committed by Greg Kroah-Hartman
parent e1b5186810
commit c097af1d0a
1 changed files with 11 additions and 2 deletions
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13
drivers/base/property.c
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@ -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);