diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-03 22:23:10 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-03 22:23:10 +0200 |
commit | 56cbceab928d7ac3702de172ff8dcc1da2a6aaeb (patch) | |
tree | d225b447d5421b652dae4b7d3501bc82900a8ecf /drivers/usb/core/port.c | |
parent | Merge tag 'tty-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/greg... (diff) | |
parent | usb: host: xhci-plat: Set XHCI_STATE_REMOVING before resuming XHCI HC (diff) | |
download | linux-56cbceab928d7ac3702de172ff8dcc1da2a6aaeb.tar.xz linux-56cbceab928d7ac3702de172ff8dcc1da2a6aaeb.zip |
Merge tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt driver updates from Greg KH:
"Here is the big set of USB and Thunderbolt driver updates for 6.5-rc1.
Included in here are:
- Lots of USB4/Thunderbolt additions and updates for new hardware
types and fixes as people are starting to get access to the
hardware in the wild
- new gadget controller driver, cdns2, added
- new typec drivers added
- xhci driver updates
- typec driver updates
- usbip driver fixes
- usb-serial driver updates and fixes
- lots of smaller USB driver updates
All of these have been in linux-next for a while with no reported
problems"
* tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits)
usb: host: xhci-plat: Set XHCI_STATE_REMOVING before resuming XHCI HC
usb: host: xhci: Do not re-initialize the XHCI HC if being removed
usb: typec: nb7vpq904m: fix CONFIG_DRM dependency
usbip: usbip_host: Replace strlcpy with strscpy
usb: dwc3: gadget: Propagate core init errors to UDC during pullup
USB: serial: option: add LARA-R6 01B PIDs
usb: ulpi: Make container_of() no-op in to_ulpi_dev()
usb: gadget: legacy: fix error return code in gfs_bind
usb: typec: fsa4480: add support for Audio Accessory Mode
usb: typec: fsa4480: rework mux & switch setup to handle more states
usb: typec: ucsi: call typec_set_mode on non-altmode partner change
USB: gadget: f_hid: make hidg_class a static const structure
USB: gadget: f_printer: make usb_gadget_class a static const structure
USB: mon: make mon_bin_class a static const structure
USB: gadget: udc: core: make udc_class a static const structure
USB: roles: make role_class a static const structure
dt-bindings: usb: dwc3: Add interrupt-names property support for wakeup interrupt
dt-bindings: usb: Add StarFive JH7110 USB controller
dt-bindings: usb: dwc3: Add IPQ9574 compatible
usb: cdns2: Fix spelling mistake in a trace message "Wakupe" -> "Wakeup"
...
Diffstat (limited to 'drivers/usb/core/port.c')
-rw-r--r-- | drivers/usb/core/port.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 06a8f1f84f6f..77be0dc28da9 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -160,6 +160,16 @@ static ssize_t connect_type_show(struct device *dev, } static DEVICE_ATTR_RO(connect_type); +static ssize_t state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_port *port_dev = to_usb_port(dev); + enum usb_device_state state = READ_ONCE(port_dev->state); + + return sysfs_emit(buf, "%s\n", usb_state_string(state)); +} +static DEVICE_ATTR_RO(state); + static ssize_t over_current_count_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -259,6 +269,7 @@ static DEVICE_ATTR_RW(usb3_lpm_permit); static struct attribute *port_dev_attrs[] = { &dev_attr_connect_type.attr, + &dev_attr_state.attr, &dev_attr_location.attr, &dev_attr_quirks.attr, &dev_attr_over_current_count.attr, @@ -705,19 +716,24 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) return retval; } + port_dev->state_kn = sysfs_get_dirent(port_dev->dev.kobj.sd, "state"); + if (!port_dev->state_kn) { + dev_err(&port_dev->dev, "failed to sysfs_get_dirent 'state'\n"); + retval = -ENODEV; + goto err_unregister; + } + /* Set default policy of port-poweroff disabled. */ retval = dev_pm_qos_add_request(&port_dev->dev, port_dev->req, DEV_PM_QOS_FLAGS, PM_QOS_FLAG_NO_POWER_OFF); if (retval < 0) { - device_unregister(&port_dev->dev); - return retval; + goto err_put_kn; } retval = component_add(&port_dev->dev, &connector_ops); if (retval) { dev_warn(&port_dev->dev, "failed to add component\n"); - device_unregister(&port_dev->dev); - return retval; + goto err_put_kn; } find_and_link_peer(hub, port1); @@ -754,6 +770,13 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) port_dev->req = NULL; } return 0; + +err_put_kn: + sysfs_put(port_dev->state_kn); +err_unregister: + device_unregister(&port_dev->dev); + + return retval; } void usb_hub_remove_port_device(struct usb_hub *hub, int port1) @@ -765,5 +788,6 @@ void usb_hub_remove_port_device(struct usb_hub *hub, int port1) if (peer) unlink_peers(port_dev, peer); component_del(&port_dev->dev, &connector_ops); + sysfs_put(port_dev->state_kn); device_unregister(&port_dev->dev); } |