linux.git/include/linux/usb.h, branch v7.0-rc2 Linux kernel source tree usb: linux/usb.h: Correct the description of the usb_device_driver member 2025-12-17T13:43:31+00:00 Yi Cong yicong@kylinos.cn 2025-12-02T09:09:48+00:00 dd1fbe324a548e8057d5f3c72ce1a64a80f1753e In the current kernel USB device driver code, only the name field is required to be provided; all other fields are optional. Correct this part of the description. Signed-off-by: Yi Cong <yicong@kylinos.cn> Acked-by: Alan Stern <stern@rowland.harvard.edu> Link: https://patch.msgid.link/20251202090948.334809-1-cong.yi@linux.dev Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
In the current kernel USB device driver code, only the name field is
required to be provided; all other fields are optional.

Correct this part of the description.

Signed-off-by: Yi Cong <yicong@kylinos.cn>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20251202090948.334809-1-cong.yi@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: offload: add apis for offload usage tracking 2025-09-12T12:08:02+00:00 Guan-Yu Lin guanyulin@google.com 2025-09-11T14:20:14+00:00 7f70b89b2be66c03ddc76d3ad8aebeeec4a9c505 Introduce offload_usage and corresponding apis to track offload usage on each USB device. Offload denotes that there is another co-processor accessing the USB device via the same USB host controller. To optimize power usage, it's essential to monitor whether the USB device is actively used by other co-processor. This information is vital when determining if a USB device can be safely suspended during system power state transitions. Signed-off-by: Guan-Yu Lin <guanyulin@google.com> Link: https://lore.kernel.org/r/20250911142051.90822-3-guanyulin@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250911142051.90822-3-guanyulin@google.com 
Introduce offload_usage and corresponding apis to track offload usage
on each USB device. Offload denotes that there is another co-processor
accessing the USB device via the same USB host controller. To optimize
power usage, it's essential to monitor whether the USB device is
actively used by other co-processor. This information is vital when
determining if a USB device can be safely suspended during system power
state transitions.

Signed-off-by: Guan-Yu Lin <guanyulin@google.com>
Link: https://lore.kernel.org/r/20250911142051.90822-3-guanyulin@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250911142051.90822-3-guanyulin@google.com
usb: core: Introduce usb_endpoint_is_hs_isoc_double() 2025-09-06T13:25:05+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2025-08-20T14:38:21+00:00 d6725169a9bbcb5bd1dd14b2891b874614c59f52 Introduce usb_endpoint_is_hs_isoc_double() tell whether an endpoint conforms to USB 2.0 Isochronous Double IN Bandwidth ECN. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250820143824.551777-7-sakari.ailus@linux.intel.com 
Introduce usb_endpoint_is_hs_isoc_double() tell whether an endpoint
conforms to USB 2.0 Isochronous Double IN Bandwidth ECN.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250820143824.551777-7-sakari.ailus@linux.intel.com
usb: core: Add a function to get USB version independent periodic payload 2025-09-06T13:25:05+00:00 Rai, Amardeep amardeep.rai@intel.com 2025-08-20T14:38:19+00:00 20f988320d2718ef28b1f0635acc88c12a216d29 Add usb_endpoint_max_periodic_payload() to obtain maximum payload bytes in a service interval for isochronous and interrupt endpoints in a USB version independent way. Signed-off-by: Rai, Amardeep <amardeep.rai@intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Co-developed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Hans de Goede <hansg@kernel.org> Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250820143824.551777-5-sakari.ailus@linux.intel.com 
Add usb_endpoint_max_periodic_payload() to obtain maximum payload bytes in
a service interval for isochronous and interrupt endpoints in a USB
version independent way.

Signed-off-by: Rai, Amardeep <amardeep.rai@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Co-developed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250820143824.551777-5-sakari.ailus@linux.intel.com
usb: core: add urb->sgt parameter description 2025-07-21T15:40:02+00:00 Xu Yang xu.yang_2@nxp.com 2025-07-21T10:44:17+00:00 fcb476990beb55c958db0b5aa2e9ca772d0fc982 The parameter description of urb->sgt is lost, this will add it for completeness. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Closes: https://lore.kernel.org/all/20250711182803.1d548467@canb.auug.org.au/ Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Fixes: 488e6eaab88c ("usb: core: add dma-noncoherent buffer alloc and free API") Link: https://lore.kernel.org/r/20250721104417.3442530-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The parameter description of urb->sgt is lost, this will add it for
completeness.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/all/20250711182803.1d548467@canb.auug.org.au/
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Fixes: 488e6eaab88c ("usb: core: add dma-noncoherent buffer alloc and free API")
Link: https://lore.kernel.org/r/20250721104417.3442530-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: core: add dma-noncoherent buffer alloc and free API 2025-07-09T10:15:56+00:00 Xu Yang xu.yang_2@nxp.com 2025-07-04T09:57:49+00:00 488e6eaab88cfa4b6fd2e2bb72fac9cfdc8c403b This will add usb_alloc_noncoherent() and usb_free_noncoherent() functions to support alloc and free buffer in a dma-noncoherent way. To explicit manage the memory ownership for the kernel and device, this will also add usb_dma_noncoherent_sync_for_cpu/device() functions and call it at proper time. The management requires the user save sg_table returned by usb_alloc_noncoherent() to urb->sgt. Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/20250704095751.73765-2-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
This will add usb_alloc_noncoherent() and usb_free_noncoherent()
functions to support alloc and free buffer in a dma-noncoherent way.

To explicit manage the memory ownership for the kernel and device,
this will also add usb_dma_noncoherent_sync_for_cpu/device() functions
and call it at proper time.  The management requires the user save
sg_table returned by usb_alloc_noncoherent() to urb->sgt.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20250704095751.73765-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge merge point of tag 'usb-6.16-rc5' into usb-next 2025-07-05T05:52:33+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2025-07-05T05:51:39+00:00 81c3b7256f9ec3c9f7659e4a2aec8d8ead0d4c3b We need the USB fixes in here as well to build on top of for other changes that depend on them. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
We need the USB fixes in here as well to build on top of for other
changes that depend on them.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: acpi: fix device link removal 2025-06-19T10:36:19+00:00 Heikki Krogerus heikki.krogerus@linux.intel.com 2025-06-11T11:14:15+00:00 3b18405763c1ebb1efc15feef5563c9cdb2cc3a7 The device link to the USB4 host interface has to be removed manually since it's no longer auto removed. Fixes: 623dae3e7084 ("usb: acpi: fix boot hang due to early incorrect 'tunneled' USB3 device links") Cc: stable <stable@kernel.org> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Link: https://lore.kernel.org/r/20250611111415.2707865-1-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The device link to the USB4 host interface has to be removed
manually since it's no longer auto removed.

Fixes: 623dae3e7084 ("usb: acpi: fix boot hang due to early incorrect 'tunneled' USB3 device links")
Cc: stable <stable@kernel.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20250611111415.2707865-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: core: Remove unused usb_unlink_anchored_urbs 2025-06-19T10:27:02+00:00 Dr. David Alan Gilbert linux@treblig.org 2025-06-08T23:56:17+00:00 47c83f95f3e293a9e924a1ba41d782bb059bb954 usb_unlink_anchored_urbs() has been unused since it's last use was removed in 2009 by commit 9b9c5aaeedfd ("ar9170: xmit code revamp") Remove it. Signed-off-by: "Dr. David Alan Gilbert" <linux@treblig.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20250608235617.200731-1-linux@treblig.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
usb_unlink_anchored_urbs() has been unused since it's last use was
removed in 2009 by
commit 9b9c5aaeedfd ("ar9170: xmit code revamp")

Remove it.

Signed-off-by: "Dr. David Alan Gilbert" <linux@treblig.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20250608235617.200731-1-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USB: core: Correct API usb_(enable|disable)_autosuspend() prototypes 2025-04-11T14:12:26+00:00 Zijun Hu quic_zijuhu@quicinc.com 2025-04-08T12:08:51+00:00 1692632146451184c4bcb68554098470a119fb01 API usb_(enable|disable)_autosuspend() have inconsistent prototypes regarding if CONFIG_PM is defined. Correct prototypes when the macro is undefined by referring to those when the macro is defined. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/20250408-fix_usb_hdr-v1-1-e785c5b49481@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
API usb_(enable|disable)_autosuspend() have inconsistent prototypes
regarding if CONFIG_PM is defined.

Correct prototypes when the macro is undefined by referring to those
when the macro is defined.

Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20250408-fix_usb_hdr-v1-1-e785c5b49481@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>