<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/usb/core, branch v5.4.217</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>USB: core: Fix RST error in hub.c</title>
<updated>2022-09-28T09:04:03+00:00</updated>
<author>
<name>Alan Stern</name>
<email>stern@rowland.harvard.edu</email>
</author>
<published>2022-09-01T14:36:34+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=95b97afdde753aa58ce01dd7ab26c9f5d519405f'/>
<id>95b97afdde753aa58ce01dd7ab26c9f5d519405f</id>
<content type='text'>
commit 766a96dc558385be735a370db867e302c8f22153 upstream.

A recent commit added an invalid RST expression to a kerneldoc comment
in hub.c.  The fix is trivial.

Fixes: 9c6d778800b9 ("USB: core: Prevent nested device-reset calls")
Cc: &lt;stable@vger.kernel.org&gt;
Reported-by: Stephen Rothwell &lt;sfr@canb.auug.org.au&gt;
Reviewed-by: Bagas Sanjaya &lt;bagasdotme@gmail.com&gt;
Signed-off-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/YxDDcsLtRZ7c20pq@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 766a96dc558385be735a370db867e302c8f22153 upstream.

A recent commit added an invalid RST expression to a kerneldoc comment
in hub.c.  The fix is trivial.

Fixes: 9c6d778800b9 ("USB: core: Prevent nested device-reset calls")
Cc: &lt;stable@vger.kernel.org&gt;
Reported-by: Stephen Rothwell &lt;sfr@canb.auug.org.au&gt;
Reviewed-by: Bagas Sanjaya &lt;bagasdotme@gmail.com&gt;
Signed-off-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/YxDDcsLtRZ7c20pq@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Revert "usb: add quirks for Lenovo OneLink+ Dock"</title>
<updated>2022-09-28T09:04:02+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@linuxfoundation.org</email>
</author>
<published>2022-08-31T08:34:25+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=430c9bd664ec76c521120704fad8207bd5c06769'/>
<id>430c9bd664ec76c521120704fad8207bd5c06769</id>
<content type='text'>
[ Upstream commit 58bfe7d8e31014d7ce246788df99c56e3cfe6c68 ]

This reverts commit 3d5f70949f1b1168fbb17d06eb5c57e984c56c58.

The quirk does not work properly, more work is needed to determine what
should be done here.

Reported-by: Oliver Neukum &lt;oneukum@suse.com&gt;
Cc: Jean-Francois Le Fillatre &lt;jflf_kernel@gmx.com&gt;
Cc: stable &lt;stable@kernel.org&gt;
Fixes: 3d5f70949f1b ("usb: add quirks for Lenovo OneLink+ Dock")
Link: https://lore.kernel.org/r/9a17ea86-079f-510d-e919-01bc53a6d09f@gmx.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 58bfe7d8e31014d7ce246788df99c56e3cfe6c68 ]

This reverts commit 3d5f70949f1b1168fbb17d06eb5c57e984c56c58.

The quirk does not work properly, more work is needed to determine what
should be done here.

Reported-by: Oliver Neukum &lt;oneukum@suse.com&gt;
Cc: Jean-Francois Le Fillatre &lt;jflf_kernel@gmx.com&gt;
Cc: stable &lt;stable@kernel.org&gt;
Fixes: 3d5f70949f1b ("usb: add quirks for Lenovo OneLink+ Dock")
Link: https://lore.kernel.org/r/9a17ea86-079f-510d-e919-01bc53a6d09f@gmx.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: add quirks for Lenovo OneLink+ Dock</title>
<updated>2022-09-28T09:04:02+00:00</updated>
<author>
<name>Jean-Francois Le Fillatre</name>
<email>jflf_kernel@gmx.com</email>
</author>
<published>2022-08-24T19:13:21+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ddf7bc22181717d3a1ee66602be29021bbaaacbf'/>
<id>ddf7bc22181717d3a1ee66602be29021bbaaacbf</id>
<content type='text'>
[ Upstream commit 3d5f70949f1b1168fbb17d06eb5c57e984c56c58 ]

The Lenovo OneLink+ Dock contains two VL812 USB3.0 controllers:
17ef:1018 upstream
17ef:1019 downstream

Those two controllers both have problems with some USB3.0 devices,
particularly self-powered ones. Typical error messages include:

  Timeout while waiting for setup device command
  device not accepting address X, error -62
  unable to enumerate USB device

By process of elimination the controllers themselves were identified as
the cause of the problem. Through trial and error the issue was solved
by using USB_QUIRK_RESET_RESUME for both chips.

Signed-off-by: Jean-Francois Le Fillatre &lt;jflf_kernel@gmx.com&gt;
Cc: stable &lt;stable@kernel.org&gt;
Link: https://lore.kernel.org/r/20220824191320.17883-1-jflf_kernel@gmx.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 3d5f70949f1b1168fbb17d06eb5c57e984c56c58 ]

The Lenovo OneLink+ Dock contains two VL812 USB3.0 controllers:
17ef:1018 upstream
17ef:1019 downstream

Those two controllers both have problems with some USB3.0 devices,
particularly self-powered ones. Typical error messages include:

  Timeout while waiting for setup device command
  device not accepting address X, error -62
  unable to enumerate USB device

By process of elimination the controllers themselves were identified as
the cause of the problem. Through trial and error the issue was solved
by using USB_QUIRK_RESET_RESUME for both chips.

Signed-off-by: Jean-Francois Le Fillatre &lt;jflf_kernel@gmx.com&gt;
Cc: stable &lt;stable@kernel.org&gt;
Link: https://lore.kernel.org/r/20220824191320.17883-1-jflf_kernel@gmx.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: core: Prevent nested device-reset calls</title>
<updated>2022-09-15T10:04:52+00:00</updated>
<author>
<name>Alan Stern</name>
<email>stern@rowland.harvard.edu</email>
</author>
<published>2022-08-26T19:31:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=df1875084898b15cbc42f712e93d7f113ae6271b'/>
<id>df1875084898b15cbc42f712e93d7f113ae6271b</id>
<content type='text'>
commit 9c6d778800b921bde3bff3cff5003d1650f942d1 upstream.

Automatic kernel fuzzing revealed a recursive locking violation in
usb-storage:

============================================
WARNING: possible recursive locking detected
5.18.0 #3 Not tainted
--------------------------------------------
kworker/1:3/1205 is trying to acquire lock:
ffff888018638db8 (&amp;us_interface_key[i]){+.+.}-{3:3}, at:
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230

but task is already holding lock:
ffff888018638db8 (&amp;us_interface_key[i]){+.+.}-{3:3}, at:
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230

...

stack backtrace:
CPU: 1 PID: 1205 Comm: kworker/1:3 Not tainted 5.18.0 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
&lt;TASK&gt;
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2988 [inline]
check_deadlock kernel/locking/lockdep.c:3031 [inline]
validate_chain kernel/locking/lockdep.c:3816 [inline]
__lock_acquire.cold+0x152/0x3ca kernel/locking/lockdep.c:5053
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x520 kernel/locking/lockdep.c:5630
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x14f/0x1610 kernel/locking/mutex.c:747
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230
usb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6109
r871xu_dev_remove+0x21a/0x270 drivers/staging/rtl8712/usb_intf.c:622
usb_unbind_interface+0x1bd/0x890 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
device_remove+0x11f/0x170 drivers/base/dd.c:537
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x1a7/0x2f0 drivers/base/dd.c:1248
usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627
usb_forced_unbind_intf+0x4d/0xa0 drivers/usb/core/driver.c:1118
usb_reset_device+0x39b/0x9a0 drivers/usb/core/hub.c:6114

This turned out not to be an error in usb-storage but rather a nested
device reset attempt.  That is, as the rtl8712 driver was being
unbound from a composite device in preparation for an unrelated USB
reset (that driver does not have pre_reset or post_reset callbacks),
its -&gt;remove routine called usb_reset_device() -- thus nesting one
reset call within another.

Performing a reset as part of disconnect processing is a questionable
practice at best.  However, the bug report points out that the USB
core does not have any protection against nested resets.  Adding a
reset_in_progress flag and testing it will prevent such errors in the
future.

Link: https://lore.kernel.org/all/CAB7eexKUpvX-JNiLzhXBDWgfg2T9e9_0Tw4HQ6keN==voRbP0g@mail.gmail.com/
Cc: stable@vger.kernel.org
Reported-and-tested-by: Rondreis &lt;linhaoguo86@gmail.com&gt;
Signed-off-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/YwkflDxvg0KWqyZK@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 9c6d778800b921bde3bff3cff5003d1650f942d1 upstream.

Automatic kernel fuzzing revealed a recursive locking violation in
usb-storage:

============================================
WARNING: possible recursive locking detected
5.18.0 #3 Not tainted
--------------------------------------------
kworker/1:3/1205 is trying to acquire lock:
ffff888018638db8 (&amp;us_interface_key[i]){+.+.}-{3:3}, at:
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230

but task is already holding lock:
ffff888018638db8 (&amp;us_interface_key[i]){+.+.}-{3:3}, at:
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230

...

stack backtrace:
CPU: 1 PID: 1205 Comm: kworker/1:3 Not tainted 5.18.0 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
&lt;TASK&gt;
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2988 [inline]
check_deadlock kernel/locking/lockdep.c:3031 [inline]
validate_chain kernel/locking/lockdep.c:3816 [inline]
__lock_acquire.cold+0x152/0x3ca kernel/locking/lockdep.c:5053
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x520 kernel/locking/lockdep.c:5630
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x14f/0x1610 kernel/locking/mutex.c:747
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230
usb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6109
r871xu_dev_remove+0x21a/0x270 drivers/staging/rtl8712/usb_intf.c:622
usb_unbind_interface+0x1bd/0x890 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
device_remove+0x11f/0x170 drivers/base/dd.c:537
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x1a7/0x2f0 drivers/base/dd.c:1248
usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627
usb_forced_unbind_intf+0x4d/0xa0 drivers/usb/core/driver.c:1118
usb_reset_device+0x39b/0x9a0 drivers/usb/core/hub.c:6114

This turned out not to be an error in usb-storage but rather a nested
device reset attempt.  That is, as the rtl8712 driver was being
unbound from a composite device in preparation for an unrelated USB
reset (that driver does not have pre_reset or post_reset callbacks),
its -&gt;remove routine called usb_reset_device() -- thus nesting one
reset call within another.

Performing a reset as part of disconnect processing is a questionable
practice at best.  However, the bug report points out that the USB
core does not have any protection against nested resets.  Adding a
reset_in_progress flag and testing it will prevent such errors in the
future.

Link: https://lore.kernel.org/all/CAB7eexKUpvX-JNiLzhXBDWgfg2T9e9_0Tw4HQ6keN==voRbP0g@mail.gmail.com/
Cc: stable@vger.kernel.org
Reported-and-tested-by: Rondreis &lt;linhaoguo86@gmail.com&gt;
Signed-off-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/YwkflDxvg0KWqyZK@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: HCD: Fix URB giveback issue in tasklet function</title>
<updated>2022-08-25T09:17:26+00:00</updated>
<author>
<name>Weitao Wang</name>
<email>WeitaoWang-oc@zhaoxin.com</email>
</author>
<published>2022-07-26T07:49:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5d952c7ae3393939250c5b5202ec0c1798ebf42e'/>
<id>5d952c7ae3393939250c5b5202ec0c1798ebf42e</id>
<content type='text'>
commit 26c6c2f8a907c9e3a2f24990552a4d77235791e6 upstream.

Usb core introduce the mechanism of giveback of URB in tasklet context to
reduce hardware interrupt handling time. On some test situation(such as
FIO with 4KB block size), when tasklet callback function called to
giveback URB, interrupt handler add URB node to the bh-&gt;head list also.
If check bh-&gt;head list again after finish all URB giveback of local_list,
then it may introduce a "dynamic balance" between giveback URB and add URB
to bh-&gt;head list. This tasklet callback function may not exit for a long
time, which will cause other tasklet function calls to be delayed. Some
real-time applications(such as KB and Mouse) will see noticeable lag.

In order to prevent the tasklet function from occupying the cpu for a long
time at a time, new URBS will not be added to the local_list even though
the bh-&gt;head list is not empty. But also need to ensure the left URB
giveback to be processed in time, so add a member high_prio for structure
giveback_urb_bh to prioritize tasklet and schelule this tasklet again if
bh-&gt;head list is not empty.

At the same time, we are able to prioritize tasklet through structure
member high_prio. So, replace the local high_prio_bh variable with this
structure member in usb_hcd_giveback_urb.

Fixes: 94dfd7edfd5c ("USB: HCD: support giveback of URB in tasklet context")
Cc: stable &lt;stable@kernel.org&gt;
Reviewed-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Weitao Wang &lt;WeitaoWang-oc@zhaoxin.com&gt;
Link: https://lore.kernel.org/r/20220726074918.5114-1-WeitaoWang-oc@zhaoxin.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 26c6c2f8a907c9e3a2f24990552a4d77235791e6 upstream.

Usb core introduce the mechanism of giveback of URB in tasklet context to
reduce hardware interrupt handling time. On some test situation(such as
FIO with 4KB block size), when tasklet callback function called to
giveback URB, interrupt handler add URB node to the bh-&gt;head list also.
If check bh-&gt;head list again after finish all URB giveback of local_list,
then it may introduce a "dynamic balance" between giveback URB and add URB
to bh-&gt;head list. This tasklet callback function may not exit for a long
time, which will cause other tasklet function calls to be delayed. Some
real-time applications(such as KB and Mouse) will see noticeable lag.

In order to prevent the tasklet function from occupying the cpu for a long
time at a time, new URBS will not be added to the local_list even though
the bh-&gt;head list is not empty. But also need to ensure the left URB
giveback to be processed in time, so add a member high_prio for structure
giveback_urb_bh to prioritize tasklet and schelule this tasklet again if
bh-&gt;head list is not empty.

At the same time, we are able to prioritize tasklet through structure
member high_prio. So, replace the local high_prio_bh variable with this
structure member in usb_hcd_giveback_urb.

Fixes: 94dfd7edfd5c ("USB: HCD: support giveback of URB in tasklet context")
Cc: stable &lt;stable@kernel.org&gt;
Reviewed-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Weitao Wang &lt;WeitaoWang-oc@zhaoxin.com&gt;
Link: https://lore.kernel.org/r/20220726074918.5114-1-WeitaoWang-oc@zhaoxin.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: hcd-pci: Fully suspend across freeze/thaw cycle</title>
<updated>2022-06-14T16:11:59+00:00</updated>
<author>
<name>Evan Green</name>
<email>evgreen@chromium.org</email>
</author>
<published>2022-04-21T17:39:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3a7170a3de628befe501e389b121f0cae4a731af'/>
<id>3a7170a3de628befe501e389b121f0cae4a731af</id>
<content type='text'>
[ Upstream commit 63acaa8e9c65dc34dc249440216f8e977f5d2748 ]

The documentation for the freeze() method says that it "should quiesce
the device so that it doesn't generate IRQs or DMA". The unspoken
consequence of not doing this is that MSIs aimed at non-boot CPUs may
get fully lost if they're sent during the period where the target CPU is
offline.

The current callbacks for USB HCD do not fully quiesce interrupts,
specifically on XHCI. Change to use the full suspend/resume flow for
freeze/thaw to ensure interrupts are fully quiesced. This fixes issues
where USB devices fail to thaw during hibernation because XHCI misses
its interrupt and cannot recover.

Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Evan Green &lt;evgreen@chromium.org&gt;
Link: https://lore.kernel.org/r/20220421103751.v3.2.I8226c7fdae88329ef70957b96a39b346c69a914e@changeid
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 63acaa8e9c65dc34dc249440216f8e977f5d2748 ]

The documentation for the freeze() method says that it "should quiesce
the device so that it doesn't generate IRQs or DMA". The unspoken
consequence of not doing this is that MSIs aimed at non-boot CPUs may
get fully lost if they're sent during the period where the target CPU is
offline.

The current callbacks for USB HCD do not fully quiesce interrupts,
specifically on XHCI. Change to use the full suspend/resume flow for
freeze/thaw to ensure interrupts are fully quiesced. This fixes issues
where USB devices fail to thaw during hibernation because XHCI misses
its interrupt and cannot recover.

Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Evan Green &lt;evgreen@chromium.org&gt;
Link: https://lore.kernel.org/r/20220421103751.v3.2.I8226c7fdae88329ef70957b96a39b346c69a914e@changeid
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: core: hcd: Add support for deferring roothub registration</title>
<updated>2022-06-14T16:11:24+00:00</updated>
<author>
<name>Kishon Vijay Abraham I</name>
<email>kishon@ti.com</email>
</author>
<published>2022-05-10T09:16:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1b767500d151e4a32eb6ec51a6df511ecde05d7a'/>
<id>1b767500d151e4a32eb6ec51a6df511ecde05d7a</id>
<content type='text'>
commit a44623d9279086c89f631201d993aa332f7c9e66 upstream.

It has been observed with certain PCIe USB cards (like Inateck connected
to AM64 EVM or J7200 EVM) that as soon as the primary roothub is
registered, port status change is handled even before xHC is running
leading to cold plug USB devices not detected. For such cases, registering
both the root hubs along with the second HCD is required. Add support for
deferring roothub registration in usb_add_hcd(), so that both primary and
secondary roothubs are registered along with the second HCD.

This patch has been added and reverted earier as it triggered a race
in usb device enumeration.
That race is now fixed in 5.16-rc3, and in stable back to 5.4
commit 6cca13de26ee ("usb: hub: Fix locking issues with address0_mutex")
commit 6ae6dc22d2d1 ("usb: hub: Fix usb enumeration issue due to address0
race")

CC: stable@vger.kernel.org # 5.4+
Suggested-by: Mathias Nyman &lt;mathias.nyman@linux.intel.com&gt;
Tested-by: Chris Chiu &lt;chris.chiu@canonical.com&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Kishon Vijay Abraham I &lt;kishon@ti.com&gt;
Link: https://lore.kernel.org/r/20220510091630.16564-2-kishon@ti.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit a44623d9279086c89f631201d993aa332f7c9e66 upstream.

It has been observed with certain PCIe USB cards (like Inateck connected
to AM64 EVM or J7200 EVM) that as soon as the primary roothub is
registered, port status change is handled even before xHC is running
leading to cold plug USB devices not detected. For such cases, registering
both the root hubs along with the second HCD is required. Add support for
deferring roothub registration in usb_add_hcd(), so that both primary and
secondary roothubs are registered along with the second HCD.

This patch has been added and reverted earier as it triggered a race
in usb device enumeration.
That race is now fixed in 5.16-rc3, and in stable back to 5.4
commit 6cca13de26ee ("usb: hub: Fix locking issues with address0_mutex")
commit 6ae6dc22d2d1 ("usb: hub: Fix usb enumeration issue due to address0
race")

CC: stable@vger.kernel.org # 5.4+
Suggested-by: Mathias Nyman &lt;mathias.nyman@linux.intel.com&gt;
Tested-by: Chris Chiu &lt;chris.chiu@canonical.com&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Kishon Vijay Abraham I &lt;kishon@ti.com&gt;
Link: https://lore.kernel.org/r/20220510091630.16564-2-kishon@ti.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: new quirk for Dell Gen 2 devices</title>
<updated>2022-06-14T16:11:24+00:00</updated>
<author>
<name>Monish Kumar R</name>
<email>monish.kumar.r@intel.com</email>
</author>
<published>2022-05-20T13:00:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=11479087639329fac9607356139649e66eb5281f'/>
<id>11479087639329fac9607356139649e66eb5281f</id>
<content type='text'>
commit 97fa5887cf283bb75ffff5f6b2c0e71794c02400 upstream.

Add USB_QUIRK_NO_LPM and USB_QUIRK_RESET_RESUME quirks for Dell usb gen
2 device to not fail during enumeration.

Found this bug on own testing

Signed-off-by: Monish Kumar R &lt;monish.kumar.r@intel.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20220520130044.17303-1-monish.kumar.r@intel.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 97fa5887cf283bb75ffff5f6b2c0e71794c02400 upstream.

Add USB_QUIRK_NO_LPM and USB_QUIRK_RESET_RESUME quirks for Dell usb gen
2 device to not fail during enumeration.

Found this bug on own testing

Signed-off-by: Monish Kumar R &lt;monish.kumar.r@intel.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20220520130044.17303-1-monish.kumar.r@intel.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: quirks: add STRING quirk for VCOM device</title>
<updated>2022-05-09T07:03:21+00:00</updated>
<author>
<name>Oliver Neukum</name>
<email>oneukum@suse.com</email>
</author>
<published>2022-04-14T12:31:52+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=890fc65448ead96d98b1d5f44f2d2342c090bf2c'/>
<id>890fc65448ead96d98b1d5f44f2d2342c090bf2c</id>
<content type='text'>
commit ec547af8a9ea6441864bad34172676b5652ceb96 upstream.

This has been reported to stall if queried

Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Oliver Neukum &lt;oneukum@suse.com&gt;
Link: https://lore.kernel.org/r/20220414123152.1700-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit ec547af8a9ea6441864bad34172676b5652ceb96 upstream.

This has been reported to stall if queried

Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Oliver Neukum &lt;oneukum@suse.com&gt;
Link: https://lore.kernel.org/r/20220414123152.1700-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: quirks: add a Realtek card reader</title>
<updated>2022-05-09T07:03:20+00:00</updated>
<author>
<name>Oliver Neukum</name>
<email>oneukum@suse.com</email>
</author>
<published>2022-04-14T11:02:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c4b31d41f5f2f0ce00de70cee5c671ac65d4be2f'/>
<id>c4b31d41f5f2f0ce00de70cee5c671ac65d4be2f</id>
<content type='text'>
commit 2a7ccf6bb6f147f64c025ad68f4255d8e1e0ce6d upstream.

This device is reported to stall when enummerated.

Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Oliver Neukum &lt;oneukum@suse.com&gt;
Link: https://lore.kernel.org/r/20220414110209.30924-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 2a7ccf6bb6f147f64c025ad68f4255d8e1e0ce6d upstream.

This device is reported to stall when enummerated.

Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Oliver Neukum &lt;oneukum@suse.com&gt;
Link: https://lore.kernel.org/r/20220414110209.30924-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
