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| author | Łukasz Bartosik <ukaszb@chromium.org> | 2026-01-20 20:11:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-23 17:16:24 +0100 |
| commit | db7fd1955e6825756d0241343add1d172098bb18 (patch) | |
| tree | 90344efe962e84f47b5a1084847234e4b234d3c8 /Documentation/ABI | |
| parent | 33d15312e35d4cfd26b68ab4c1b0143cc43d8b16 (diff) | |
| download | linux-next-db7fd1955e6825756d0241343add1d172098bb18.tar.gz linux-next-db7fd1955e6825756d0241343add1d172098bb18.zip | |
xhci: dbc: allow setting manufacturer string through sysfs
Add dbc_manufacturer sysfs attribute to allow changing the manufacturer
description presented by the debug device when a host requests a string
descriptor with iManufacturer index.
Value can only be changed while debug capability (DbC) is in disabled
state to prevent USB device descriptor change while connected to a USB
host.
The default value is "Linux Foundation".
The string length can be from 1 to 126 characters.
String is terminated at null or newline, driver does not support empty
string.
[ mn: Improve commit message and sysfs entry documentation ]
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260120181148.128712-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd b/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd index d153162d6045..d10e6de3adb2 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd +++ b/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd @@ -114,3 +114,16 @@ Description: connected to a USB host. The default value is "Linux USB Debug Target". The field length can be from 1 to 126 characters. + +What: /sys/bus/pci/drivers/xhci_hcd/.../dbc_manufacturer +Date: January 2026 +Contact: Łukasz Bartosik <ukaszb@chromium.org> +Description: + The dbc_manufacturer attribute allows to change the manufacturer + string descriptor presented by the debug device when a host + requests a string descriptor with iManufacturer index. + Value can only be changed while debug capability (DbC) is in + disabled state to prevent USB device descriptor change while + connected to a USB host. + The default value is "Linux Foundation". + The field length can be from 1 to 126 characters. |