<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/usb, branch v5.4.11</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>usb: missing parentheses in USE_NEW_SCHEME</title>
<updated>2020-01-12T11:21:52+00:00</updated>
<author>
<name>Qi Zhou</name>
<email>atmgnd@outlook.com</email>
</author>
<published>2020-01-04T11:02:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=7cbdf96cda1fbffb17ec26ea65e1fe63c9aed430'/>
<id>7cbdf96cda1fbffb17ec26ea65e1fe63c9aed430</id>
<content type='text'>
commit 1530f6f5f5806b2abbf2a9276c0db313ae9a0e09 upstream.

According to bd0e6c9614b9 ("usb: hub: try old enumeration scheme first
for high speed devices") the kernel will try the old enumeration scheme
first for high speed devices.  This can happen when a high speed device
is plugged in.

But due to missing parentheses in the USE_NEW_SCHEME define, this logic
can get messed up and the incorrect result happens.

Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Qi Zhou &lt;atmgnd@outlook.com&gt;
Link: https://lore.kernel.org/r/ht4mtag8ZP-HKEhD0KkJhcFnVlOFV8N8eNjJVRD9pDkkLUNhmEo8_cL_sl7xy9mdajdH-T8J3TFQsjvoYQT61NFjQXy469Ed_BbBw_x4S1E=@protonmail.com
[ fixup changelog text - gregkh]
Cc: stable &lt;stable@vger.kernel.org&gt;
Fixes: bd0e6c9614b9 ("usb: hub: try old enumeration scheme first for high speed devices")
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 1530f6f5f5806b2abbf2a9276c0db313ae9a0e09 upstream.

According to bd0e6c9614b9 ("usb: hub: try old enumeration scheme first
for high speed devices") the kernel will try the old enumeration scheme
first for high speed devices.  This can happen when a high speed device
is plugged in.

But due to missing parentheses in the USE_NEW_SCHEME define, this logic
can get messed up and the incorrect result happens.

Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Qi Zhou &lt;atmgnd@outlook.com&gt;
Link: https://lore.kernel.org/r/ht4mtag8ZP-HKEhD0KkJhcFnVlOFV8N8eNjJVRD9pDkkLUNhmEo8_cL_sl7xy9mdajdH-T8J3TFQsjvoYQT61NFjQXy469Ed_BbBw_x4S1E=@protonmail.com
[ fixup changelog text - gregkh]
Cc: stable &lt;stable@vger.kernel.org&gt;
Fixes: bd0e6c9614b9 ("usb: hub: try old enumeration scheme first for high speed devices")
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>USB: serial: option: add Telit ME910G1 0x110a composition</title>
<updated>2020-01-12T11:21:52+00:00</updated>
<author>
<name>Daniele Palmas</name>
<email>dnlplm@gmail.com</email>
</author>
<published>2019-12-13T13:56:15+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=093d658a06cd1831c629ceeee207572895c1a872'/>
<id>093d658a06cd1831c629ceeee207572895c1a872</id>
<content type='text'>
commit 0d3010fa442429f8780976758719af05592ff19f upstream.

This patch adds the following Telit ME910G1 composition:

0x110a: tty, tty, tty, rmnet

Signed-off-by: Daniele Palmas &lt;dnlplm@gmail.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
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 0d3010fa442429f8780976758719af05592ff19f upstream.

This patch adds the following Telit ME910G1 composition:

0x110a: tty, tty, tty, rmnet

Signed-off-by: Daniele Palmas &lt;dnlplm@gmail.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>USB: core: fix check for duplicate endpoints</title>
<updated>2020-01-12T11:21:52+00:00</updated>
<author>
<name>Johan Hovold</name>
<email>johan@kernel.org</email>
</author>
<published>2019-12-19T16:10:16+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=578289f8476c3044f73ff15e138bfca555567ffe'/>
<id>578289f8476c3044f73ff15e138bfca555567ffe</id>
<content type='text'>
commit 3e4f8e21c4f27bcf30a48486b9dcc269512b79ff upstream.

Amend the endpoint-descriptor sanity checks to detect all duplicate
endpoint addresses in a configuration.

Commit 0a8fd1346254 ("USB: fix problems with duplicate endpoint
addresses") added a check for duplicate endpoint addresses within a
single alternate setting, but did not look for duplicate addresses in
other interfaces.

The current check would also not detect all duplicate addresses when one
endpoint is as a (bi-directional) control endpoint.

This specifically avoids overwriting the endpoint entries in struct
usb_device when enabling a duplicate endpoint, something which could
potentially lead to crashes or leaks, for example, when endpoints are
later disabled.

Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/20191219161016.6695-1-johan@kernel.org
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 3e4f8e21c4f27bcf30a48486b9dcc269512b79ff upstream.

Amend the endpoint-descriptor sanity checks to detect all duplicate
endpoint addresses in a configuration.

Commit 0a8fd1346254 ("USB: fix problems with duplicate endpoint
addresses") added a check for duplicate endpoint addresses within a
single alternate setting, but did not look for duplicate addresses in
other interfaces.

The current check would also not detect all duplicate addresses when one
endpoint is as a (bi-directional) control endpoint.

This specifically avoids overwriting the endpoint entries in struct
usb_device when enabling a duplicate endpoint, something which could
potentially lead to crashes or leaks, for example, when endpoints are
later disabled.

Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/20191219161016.6695-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>usb: dwc3: gadget: Fix request complete check</title>
<updated>2020-01-12T11:21:52+00:00</updated>
<author>
<name>Thinh Nguyen</name>
<email>Thinh.Nguyen@synopsys.com</email>
</author>
<published>2019-12-14T02:40:45+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=158cbd970b0efc501c2a5cb64bd6a879bf61fc39'/>
<id>158cbd970b0efc501c2a5cb64bd6a879bf61fc39</id>
<content type='text'>
commit ea0d762775e20aaff7909a3f0866ff1688b1c618 upstream.

We can only check for IN direction if the request had completed. For OUT
direction, it's perfectly fine that the host can send less than the
setup length. Let's return true fall all cases of OUT direction.

Fixes: e0c42ce590fe ("usb: dwc3: gadget: simplify IOC handling")
Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen &lt;thinhn@synopsys.com&gt;
Link: https://lore.kernel.org/r/ac5a3593a94fdaa3d92e6352356b5f7a01ccdc7c.1576291140.git.thinhn@synopsys.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 ea0d762775e20aaff7909a3f0866ff1688b1c618 upstream.

We can only check for IN direction if the request had completed. For OUT
direction, it's perfectly fine that the host can send less than the
setup length. Let's return true fall all cases of OUT direction.

Fixes: e0c42ce590fe ("usb: dwc3: gadget: simplify IOC handling")
Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen &lt;thinhn@synopsys.com&gt;
Link: https://lore.kernel.org/r/ac5a3593a94fdaa3d92e6352356b5f7a01ccdc7c.1576291140.git.thinhn@synopsys.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>usb: typec: fusb302: Fix an undefined reference to 'extcon_get_state'</title>
<updated>2020-01-12T11:21:37+00:00</updated>
<author>
<name>zhong jiang</name>
<email>zhongjiang@huawei.com</email>
</author>
<published>2019-12-13T12:16:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e36491f117d1b5a439e1c347bded57844650dab5'/>
<id>e36491f117d1b5a439e1c347bded57844650dab5</id>
<content type='text'>
[ Upstream commit 547fc228755d79af648898187e7831a825d4f42c ]

Fixes the following compile error:

drivers/usb/typec/tcpm/fusb302.o: In function `tcpm_get_current_limit':
fusb302.c:(.text+0x3ee): undefined reference to `extcon_get_state'
fusb302.c:(.text+0x422): undefined reference to `extcon_get_state'
fusb302.c:(.text+0x450): undefined reference to `extcon_get_state'
fusb302.c:(.text+0x48c): undefined reference to `extcon_get_state'
drivers/usb/typec/tcpm/fusb302.o: In function `fusb302_probe':
fusb302.c:(.text+0x980): undefined reference to `extcon_get_extcon_dev'
make: *** [vmlinux] Error 1

It is because EXTCON is build as a module, but FUSB302 is not.

Suggested-by: Heikki Krogerus &lt;heikki.krogerus@linux.intel.com&gt;
Signed-off-by: zhong jiang &lt;zhongjiang@huawei.com&gt;
Acked-by: Heikki Krogerus &lt;heikki.krogerus@linux.intel.com&gt;
Reviewed-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
Link: https://lore.kernel.org/r/1576239378-50795-1-git-send-email-zhongjiang@huawei.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 547fc228755d79af648898187e7831a825d4f42c ]

Fixes the following compile error:

drivers/usb/typec/tcpm/fusb302.o: In function `tcpm_get_current_limit':
fusb302.c:(.text+0x3ee): undefined reference to `extcon_get_state'
fusb302.c:(.text+0x422): undefined reference to `extcon_get_state'
fusb302.c:(.text+0x450): undefined reference to `extcon_get_state'
fusb302.c:(.text+0x48c): undefined reference to `extcon_get_state'
drivers/usb/typec/tcpm/fusb302.o: In function `fusb302_probe':
fusb302.c:(.text+0x980): undefined reference to `extcon_get_extcon_dev'
make: *** [vmlinux] Error 1

It is because EXTCON is build as a module, but FUSB302 is not.

Suggested-by: Heikki Krogerus &lt;heikki.krogerus@linux.intel.com&gt;
Signed-off-by: zhong jiang &lt;zhongjiang@huawei.com&gt;
Acked-by: Heikki Krogerus &lt;heikki.krogerus@linux.intel.com&gt;
Reviewed-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
Link: https://lore.kernel.org/r/1576239378-50795-1-git-send-email-zhongjiang@huawei.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: dummy-hcd: use usb_urb_dir_in instead of usb_pipein</title>
<updated>2020-01-12T11:21:10+00:00</updated>
<author>
<name>Andrey Konovalov</name>
<email>andreyknvl@google.com</email>
</author>
<published>2019-10-21T14:20:59+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=61e861528ec14a0faa07e8152906aeefe7204236'/>
<id>61e861528ec14a0faa07e8152906aeefe7204236</id>
<content type='text'>
commit 6dabeb891c001c592645df2f477fed9f5d959987 upstream.

Commit fea3409112a9 ("USB: add direction bit to urb-&gt;transfer_flags") has
added a usb_urb_dir_in() helper function that can be used to determine
the direction of the URB. With that patch USB_DIR_IN control requests with
wLength == 0 are considered out requests by real USB HCDs. This patch
changes dummy-hcd to use the usb_urb_dir_in() helper to match that
behavior.

Signed-off-by: Andrey Konovalov &lt;andreyknvl@google.com&gt;
Link: https://lore.kernel.org/r/4ae9e68ebca02f08a93ac61fe065057c9a01f0a8.1571667489.git.andreyknvl@google.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 6dabeb891c001c592645df2f477fed9f5d959987 upstream.

Commit fea3409112a9 ("USB: add direction bit to urb-&gt;transfer_flags") has
added a usb_urb_dir_in() helper function that can be used to determine
the direction of the URB. With that patch USB_DIR_IN control requests with
wLength == 0 are considered out requests by real USB HCDs. This patch
changes dummy-hcd to use the usb_urb_dir_in() helper to match that
behavior.

Signed-off-by: Andrey Konovalov &lt;andreyknvl@google.com&gt;
Link: https://lore.kernel.org/r/4ae9e68ebca02f08a93ac61fe065057c9a01f0a8.1571667489.git.andreyknvl@google.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>usb: gadget: fix wrong endpoint desc</title>
<updated>2020-01-09T09:19:47+00:00</updated>
<author>
<name>EJ Hsu</name>
<email>ejh@nvidia.com</email>
</author>
<published>2019-12-04T07:34:56+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ae6e5f8d5108326390a444f4e04ee5c5053e5543'/>
<id>ae6e5f8d5108326390a444f4e04ee5c5053e5543</id>
<content type='text'>
[ Upstream commit e5b5da96da50ef30abb39cb9f694e99366404d24 ]

Gadget driver should always use config_ep_by_speed() to initialize
usb_ep struct according to usb device's operating speed. Otherwise,
usb_ep struct may be wrong if usb devcie's operating speed is changed.

The key point in this patch is that we want to make sure the desc pointer
in usb_ep struct will be set to NULL when gadget is disconnected.
This will force it to call config_ep_by_speed() to correctly initialize
usb_ep struct based on the new operating speed when gadget is
re-connected later.

Reviewed-by: Peter Chen &lt;peter.chen@nxp.com&gt;
Signed-off-by: EJ Hsu &lt;ejh@nvidia.com&gt;
Signed-off-by: Felipe Balbi &lt;balbi@kernel.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 e5b5da96da50ef30abb39cb9f694e99366404d24 ]

Gadget driver should always use config_ep_by_speed() to initialize
usb_ep struct according to usb device's operating speed. Otherwise,
usb_ep struct may be wrong if usb devcie's operating speed is changed.

The key point in this patch is that we want to make sure the desc pointer
in usb_ep struct will be set to NULL when gadget is disconnected.
This will force it to call config_ep_by_speed() to correctly initialize
usb_ep struct based on the new operating speed when gadget is
re-connected later.

Reviewed-by: Peter Chen &lt;peter.chen@nxp.com&gt;
Signed-off-by: EJ Hsu &lt;ejh@nvidia.com&gt;
Signed-off-by: Felipe Balbi &lt;balbi@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: EHCI: Do not return -EPIPE when hub is disconnected</title>
<updated>2019-12-31T15:46:07+00:00</updated>
<author>
<name>Erkka Talvitie</name>
<email>erkka.talvitie@vincit.fi</email>
</author>
<published>2019-12-11T08:08:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=fc7a1502c5396ef288b24ed45a2ad328bfad012d'/>
<id>fc7a1502c5396ef288b24ed45a2ad328bfad012d</id>
<content type='text'>
commit 64cc3f12d1c7dd054a215bc1ff9cc2abcfe35832 upstream.

When disconnecting a USB hub that has some child device(s) connected to it
(such as a USB mouse), then the stack tries to clear halt and
reset device(s) which are _already_ physically disconnected.

The issue has been reproduced with:

CPU: IMX6D5EYM10AD or MCIMX6D5EYM10AE.
SW: U-Boot 2019.07 and kernel 4.19.40.

CPU: HP Proliant Microserver Gen8.
SW: Linux version 4.2.3-300.fc23.x86_64

In this situation there will be error bit for MMF active yet the
CERR equals EHCI_TUNE_CERR + halt. Existing implementation
interprets this as a stall [1] (chapter 8.4.5).

The possible conditions when the MMF will be active + halt
can be found from [2] (Table 4-13).

Fix for the issue is to check whether MMF is active and PID Code is
IN before checking for the stall. If these conditions are true then
it is not a stall.

What happens after the fix is that when disconnecting a hub with
attached device(s) the situation is not interpret as a stall.

[1] [https://www.usb.org/document-library/usb-20-specification, usb_20.pdf]
[2] [https://www.intel.com/content/dam/www/public/us/en/documents/
     technical-specifications/ehci-specification-for-usb.pdf]

Signed-off-by: Erkka Talvitie &lt;erkka.talvitie@vincit.fi&gt;
Reviewed-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/ef70941d5f349767f19c0ed26b0dd9eed8ad81bb.1576050523.git.erkka.talvitie@vincit.fi
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 64cc3f12d1c7dd054a215bc1ff9cc2abcfe35832 upstream.

When disconnecting a USB hub that has some child device(s) connected to it
(such as a USB mouse), then the stack tries to clear halt and
reset device(s) which are _already_ physically disconnected.

The issue has been reproduced with:

CPU: IMX6D5EYM10AD or MCIMX6D5EYM10AE.
SW: U-Boot 2019.07 and kernel 4.19.40.

CPU: HP Proliant Microserver Gen8.
SW: Linux version 4.2.3-300.fc23.x86_64

In this situation there will be error bit for MMF active yet the
CERR equals EHCI_TUNE_CERR + halt. Existing implementation
interprets this as a stall [1] (chapter 8.4.5).

The possible conditions when the MMF will be active + halt
can be found from [2] (Table 4-13).

Fix for the issue is to check whether MMF is active and PID Code is
IN before checking for the stall. If these conditions are true then
it is not a stall.

What happens after the fix is that when disconnecting a hub with
attached device(s) the situation is not interpret as a stall.

[1] [https://www.usb.org/document-library/usb-20-specification, usb_20.pdf]
[2] [https://www.intel.com/content/dam/www/public/us/en/documents/
     technical-specifications/ehci-specification-for-usb.pdf]

Signed-off-by: Erkka Talvitie &lt;erkka.talvitie@vincit.fi&gt;
Reviewed-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/ef70941d5f349767f19c0ed26b0dd9eed8ad81bb.1576050523.git.erkka.talvitie@vincit.fi
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>usbip: Fix error path of vhci_recv_ret_submit()</title>
<updated>2019-12-31T15:46:05+00:00</updated>
<author>
<name>Suwan Kim</name>
<email>suwan.kim027@gmail.com</email>
</author>
<published>2019-12-13T02:30:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8bbc1a734eca60dccc7b1f2292d9753111a7a978'/>
<id>8bbc1a734eca60dccc7b1f2292d9753111a7a978</id>
<content type='text'>
commit aabb5b833872524eaf28f52187e5987984982264 upstream.

If a transaction error happens in vhci_recv_ret_submit(), event
handler closes connection and changes port status to kick hub_event.
Then hub tries to flush the endpoint URBs, but that causes infinite
loop between usb_hub_flush_endpoint() and vhci_urb_dequeue() because
"vhci_priv" in vhci_urb_dequeue() was already released by
vhci_recv_ret_submit() before a transmission error occurred. Thus,
vhci_urb_dequeue() terminates early and usb_hub_flush_endpoint()
continuously calls vhci_urb_dequeue().

The root cause of this issue is that vhci_recv_ret_submit()
terminates early without giving back URB when transaction error
occurs in vhci_recv_ret_submit(). That causes the error URB to still
be linked at endpoint list without “vhci_priv".

So, in the case of transaction error in vhci_recv_ret_submit(),
unlink URB from the endpoint, insert proper error code in
urb-&gt;status and give back URB.

Reported-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Tested-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Signed-off-by: Suwan Kim &lt;suwan.kim027@gmail.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Acked-by: Shuah Khan &lt;skhan@linuxfoundation.org&gt;
Link: https://lore.kernel.org/r/20191213023055.19933-3-suwan.kim027@gmail.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 aabb5b833872524eaf28f52187e5987984982264 upstream.

If a transaction error happens in vhci_recv_ret_submit(), event
handler closes connection and changes port status to kick hub_event.
Then hub tries to flush the endpoint URBs, but that causes infinite
loop between usb_hub_flush_endpoint() and vhci_urb_dequeue() because
"vhci_priv" in vhci_urb_dequeue() was already released by
vhci_recv_ret_submit() before a transmission error occurred. Thus,
vhci_urb_dequeue() terminates early and usb_hub_flush_endpoint()
continuously calls vhci_urb_dequeue().

The root cause of this issue is that vhci_recv_ret_submit()
terminates early without giving back URB when transaction error
occurs in vhci_recv_ret_submit(). That causes the error URB to still
be linked at endpoint list without “vhci_priv".

So, in the case of transaction error in vhci_recv_ret_submit(),
unlink URB from the endpoint, insert proper error code in
urb-&gt;status and give back URB.

Reported-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Tested-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Signed-off-by: Suwan Kim &lt;suwan.kim027@gmail.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Acked-by: Shuah Khan &lt;skhan@linuxfoundation.org&gt;
Link: https://lore.kernel.org/r/20191213023055.19933-3-suwan.kim027@gmail.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>usbip: Fix receive error in vhci-hcd when using scatter-gather</title>
<updated>2019-12-31T15:46:05+00:00</updated>
<author>
<name>Suwan Kim</name>
<email>suwan.kim027@gmail.com</email>
</author>
<published>2019-12-13T02:30:54+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=dbfc29c2c70e855beedaff9f60ec1fd6aae16781'/>
<id>dbfc29c2c70e855beedaff9f60ec1fd6aae16781</id>
<content type='text'>
commit d986294ee55d719562b20aabe15a39bf8f863415 upstream.

When vhci uses SG and receives data whose size is smaller than SG
buffer size, it tries to receive more data even if it acutally
receives all the data from the server. If then, it erroneously adds
error event and triggers connection shutdown.

vhci-hcd should check if it received all the data even if there are
more SG entries left. So, check if it receivces all the data from
the server in for_each_sg() loop.

Fixes: ea44d190764b ("usbip: Implement SG support to vhci-hcd and stub driver")
Reported-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Tested-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Signed-off-by: Suwan Kim &lt;suwan.kim027@gmail.com&gt;
Acked-by: Shuah Khan &lt;skhan@linuxfoundation.org&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20191213023055.19933-2-suwan.kim027@gmail.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 d986294ee55d719562b20aabe15a39bf8f863415 upstream.

When vhci uses SG and receives data whose size is smaller than SG
buffer size, it tries to receive more data even if it acutally
receives all the data from the server. If then, it erroneously adds
error event and triggers connection shutdown.

vhci-hcd should check if it received all the data even if there are
more SG entries left. So, check if it receivces all the data from
the server in for_each_sg() loop.

Fixes: ea44d190764b ("usbip: Implement SG support to vhci-hcd and stub driver")
Reported-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Tested-by: Marek Marczykowski-Górecki &lt;marmarek@invisiblethingslab.com&gt;
Signed-off-by: Suwan Kim &lt;suwan.kim027@gmail.com&gt;
Acked-by: Shuah Khan &lt;skhan@linuxfoundation.org&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20191213023055.19933-2-suwan.kim027@gmail.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
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