Most of the functionality this driver provides can be used by non-hub devices as well. To account for the hub-specific code, add a flag to the device data structure and check its value for hub-specific code. The 'always_powered_in_supend' attribute is only available for hub devices, keeping the driver's default behavior for non-hub devices (keep on in suspend). Signed-off-by: Javier Carrasco <javier.carrasco@xxxxxxxxxxxxxx> --- drivers/usb/misc/onboard_usb_dev.c | 25 +++++++++++++++++++++++-- drivers/usb/misc/onboard_usb_dev.h | 10 ++++++++++ 2 files changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c index e1779bd2d126..df0ed172c7ec 100644 --- a/drivers/usb/misc/onboard_usb_dev.c +++ b/drivers/usb/misc/onboard_usb_dev.c @@ -132,7 +132,8 @@ static int __maybe_unused onboard_dev_suspend(struct device *dev) struct usbdev_node *node; bool power_off = true; - if (onboard_dev->always_powered_in_suspend) + if (onboard_dev->always_powered_in_suspend && + !onboard_dev->pdata->is_hub) return 0; mutex_lock(&onboard_dev->lock); @@ -262,7 +263,27 @@ static struct attribute *onboard_dev_attrs[] = { &dev_attr_always_powered_in_suspend.attr, NULL, }; -ATTRIBUTE_GROUPS(onboard_dev); + +static umode_t onboard_dev_attrs_are_visible(struct kobject *kobj, + struct attribute *attr, + int n) +{ + struct device *dev = kobj_to_dev(kobj); + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + + if (attr == &dev_attr_always_powered_in_suspend.attr && + !onboard_dev->pdata->is_hub) + return 0; + + return attr->mode; +} + +static const struct attribute_group onboard_dev_group = { + .is_visible = onboard_dev_attrs_are_visible, + .attrs = onboard_dev_attrs, +}; +__ATTRIBUTE_GROUPS(onboard_dev); + static void onboard_dev_attach_usb_driver(struct work_struct *work) { diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h index 470736483cdf..106480ce72b5 100644 --- a/drivers/usb/misc/onboard_usb_dev.h +++ b/drivers/usb/misc/onboard_usb_dev.h @@ -12,60 +12,70 @@ struct onboard_dev_pdata { unsigned long reset_us; /* reset pulse width in us */ unsigned int num_supplies; /* number of supplies */ const char * const supply_names[MAX_SUPPLIES]; /* use the real names */ + bool is_hub; /* true if the device is a HUB */ }; static const struct onboard_dev_pdata microchip_usb424_data = { .reset_us = 1, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata microchip_usb5744_data = { .reset_us = 0, .num_supplies = 2, .supply_names = { "vdd", "vdd2" }, + .is_hub = true, }; static const struct onboard_dev_pdata realtek_rts5411_data = { .reset_us = 0, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata ti_tusb8041_data = { .reset_us = 3000, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata cypress_hx3_data = { .reset_us = 10000, .num_supplies = 2, .supply_names = { "vdd", "vdd2" }, + .is_hub = true, }; static const struct onboard_dev_pdata cypress_hx2vl_data = { .reset_us = 1, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata genesys_gl850g_data = { .reset_us = 3, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata genesys_gl852g_data = { .reset_us = 50, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata vialab_vl817_data = { .reset_us = 10, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct of_device_id onboard_dev_match[] = { -- 2.40.1