Removing the "svid" and "accessory" device property checks. Those properties are not supported on any platform. Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/lkml/20230522215348.uoyboow26n2o3tel@ripper/ Reviewed-by: Bjorn Andersson <andersson@xxxxxxxxxx> Tested-by: Bjorn Andersson <andersson@xxxxxxxxxx> --- v2: Fixed the comment as requested by Bjorn. drivers/usb/typec/mux.c | 55 ++++++----------------------------------- 1 file changed, 7 insertions(+), 48 deletions(-) diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index d9eaf9a0b0bfd..f2eee6322815d 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -265,60 +265,19 @@ static int mux_fwnode_match(struct device *dev, const void *fwnode) static void *typec_mux_match(const struct fwnode_handle *fwnode, const char *id, void *data) { - const struct typec_altmode_desc *desc = data; struct device *dev; - bool match; - int nval; - u16 *val; - int ret; - int i; /* - * Check has the identifier already been "consumed". If it - * has, no need to do any extra connection identification. + * Device graph (OF graph) does not give any means to identify the + * device type or the device class of the remote port parent that @fwnode + * represents, so in order to identify the type or the class of @fwnode + * an additional device property is needed. With typec muxes the + * property is named "mode-switch" (@id). The value of the device + * property is ignored. */ - match = !id; - if (match) - goto find_mux; - - if (!desc) { - /* - * Accessory Mode muxes & muxes which explicitly specify - * the required identifier can avoid SVID matching. - */ - match = fwnode_property_present(fwnode, "accessory") || - fwnode_property_present(fwnode, id); - if (match) - goto find_mux; - return NULL; - } - - /* Alternate Mode muxes */ - nval = fwnode_property_count_u16(fwnode, "svid"); - if (nval <= 0) + if (id && !fwnode_property_present(fwnode, id)) return NULL; - val = kcalloc(nval, sizeof(*val), GFP_KERNEL); - if (!val) - return ERR_PTR(-ENOMEM); - - ret = fwnode_property_read_u16_array(fwnode, "svid", val, nval); - if (ret < 0) { - kfree(val); - return ERR_PTR(ret); - } - - for (i = 0; i < nval; i++) { - match = val[i] == desc->svid; - if (match) { - kfree(val); - goto find_mux; - } - } - kfree(val); - return NULL; - -find_mux: dev = class_find_device(&typec_mux_class, NULL, fwnode, mux_fwnode_match); -- 2.39.2
