<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/net, branch v6.6.32</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>net: usb: ax88179_178a: fix link status when link is set to down/up</title>
<updated>2024-05-25T14:22:54+00:00</updated>
<author>
<name>Jose Ignacio Tornos Martinez</name>
<email>jtornosm@redhat.com</email>
</author>
<published>2024-05-10T09:08:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a202b26d9531dab60f9f90af55c6538948d0f344'/>
<id>a202b26d9531dab60f9f90af55c6538948d0f344</id>
<content type='text'>
commit ecf848eb934b03959918f5269f64c0e52bc23998 upstream.

The idea was to keep only one reset at initialization stage in order to
reduce the total delay, or the reset from usbnet_probe or the reset from
usbnet_open.

I have seen that restarting from usbnet_probe is necessary to avoid doing
too complex things. But when the link is set to down/up (for example to
configure a different mac address) the link is not correctly recovered
unless a reset is commanded from usbnet_open.

So, detect the initialization stage (first call) to not reset from
usbnet_open after the reset from usbnet_probe and after this stage, always
reset from usbnet_open too (when the link needs to be rechecked).

Apply to all the possible devices, the behavior now is going to be the same.

cc: stable@vger.kernel.org # 6.6+
Fixes: 56f78615bcb1 ("net: usb: ax88179_178a: avoid writing the mac address before first reading")
Reported-by: Isaac Ganoung &lt;inventor500@vivaldi.net&gt;
Reported-by: Yongqin Liu &lt;yongqin.liu@linaro.org&gt;
Signed-off-by: Jose Ignacio Tornos Martinez &lt;jtornosm@redhat.com&gt;
Reviewed-by: Simon Horman &lt;horms@kernel.org&gt;
Link: https://lore.kernel.org/r/20240510090846.328201-1-jtornosm@redhat.com
Signed-off-by: Jakub Kicinski &lt;kuba@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 ecf848eb934b03959918f5269f64c0e52bc23998 upstream.

The idea was to keep only one reset at initialization stage in order to
reduce the total delay, or the reset from usbnet_probe or the reset from
usbnet_open.

I have seen that restarting from usbnet_probe is necessary to avoid doing
too complex things. But when the link is set to down/up (for example to
configure a different mac address) the link is not correctly recovered
unless a reset is commanded from usbnet_open.

So, detect the initialization stage (first call) to not reset from
usbnet_open after the reset from usbnet_probe and after this stage, always
reset from usbnet_open too (when the link needs to be rechecked).

Apply to all the possible devices, the behavior now is going to be the same.

cc: stable@vger.kernel.org # 6.6+
Fixes: 56f78615bcb1 ("net: usb: ax88179_178a: avoid writing the mac address before first reading")
Reported-by: Isaac Ganoung &lt;inventor500@vivaldi.net&gt;
Reported-by: Yongqin Liu &lt;yongqin.liu@linaro.org&gt;
Signed-off-by: Jose Ignacio Tornos Martinez &lt;jtornosm@redhat.com&gt;
Reviewed-by: Simon Horman &lt;horms@kernel.org&gt;
Link: https://lore.kernel.org/r/20240510090846.328201-1-jtornosm@redhat.com
Signed-off-by: Jakub Kicinski &lt;kuba@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ice: remove unnecessary duplicate checks for VF VSI ID</title>
<updated>2024-05-25T14:22:52+00:00</updated>
<author>
<name>Jacob Keller</name>
<email>jacob.e.keller@intel.com</email>
</author>
<published>2024-02-16T22:06:36+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=4d29fd53a0cb48a2c7bee4114b29bd82fa5c1b73'/>
<id>4d29fd53a0cb48a2c7bee4114b29bd82fa5c1b73</id>
<content type='text'>
commit 363f689600dd010703ce6391bcfc729a97d21840 upstream.

The ice_vc_fdir_param_check() function validates that the VSI ID of the
virtchnl flow director command matches the VSI number of the VF. This is
already checked by the call to ice_vc_isvalid_vsi_id() immediately
following this.

This check is unnecessary since ice_vc_isvalid_vsi_id() already confirms
this by checking that the VSI ID can locate the VSI associated with the VF
structure.

Furthermore, a following change is going to refactor the ice driver to
report VSI IDs using a relative index for each VF instead of reporting the
PF VSI number. This additional check would break that logic since it
enforces that the VSI ID matches the VSI number.

Since this check duplicates  the logic in ice_vc_isvalid_vsi_id() and gets
in the way of refactoring that logic, remove it.

Signed-off-by: Jacob Keller &lt;jacob.e.keller@intel.com&gt;
Reviewed-by: Przemek Kitszel &lt;przemyslaw.kitszel@intel.com&gt;
Tested-by: Rafal Romanowski &lt;rafal.romanowski@intel.com&gt;
Signed-off-by: Tony Nguyen &lt;anthony.l.nguyen@intel.com&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 363f689600dd010703ce6391bcfc729a97d21840 upstream.

The ice_vc_fdir_param_check() function validates that the VSI ID of the
virtchnl flow director command matches the VSI number of the VF. This is
already checked by the call to ice_vc_isvalid_vsi_id() immediately
following this.

This check is unnecessary since ice_vc_isvalid_vsi_id() already confirms
this by checking that the VSI ID can locate the VSI associated with the VF
structure.

Furthermore, a following change is going to refactor the ice driver to
report VSI IDs using a relative index for each VF instead of reporting the
PF VSI number. This additional check would break that logic since it
enforces that the VSI ID matches the VSI number.

Since this check duplicates  the logic in ice_vc_isvalid_vsi_id() and gets
in the way of refactoring that logic, remove it.

Signed-off-by: Jacob Keller &lt;jacob.e.keller@intel.com&gt;
Reviewed-by: Przemek Kitszel &lt;przemyslaw.kitszel@intel.com&gt;
Tested-by: Rafal Romanowski &lt;rafal.romanowski@intel.com&gt;
Signed-off-by: Tony Nguyen &lt;anthony.l.nguyen@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ice: pass VSI pointer into ice_vc_isvalid_q_id</title>
<updated>2024-05-25T14:22:52+00:00</updated>
<author>
<name>Jacob Keller</name>
<email>jacob.e.keller@intel.com</email>
</author>
<published>2024-02-16T22:06:35+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=0ca683f921a9717ecc894e552c39d4e3e5f4e7ff'/>
<id>0ca683f921a9717ecc894e552c39d4e3e5f4e7ff</id>
<content type='text'>
commit a21605993dd5dfd15edfa7f06705ede17b519026 upstream.

The ice_vc_isvalid_q_id() function takes a VSI index and a queue ID. It
looks up the VSI from its index, and then validates that the queue number
is valid for that VSI.

The VSI ID passed is typically a VSI index from the VF. This VSI number is
validated by the PF to ensure that it matches the VSI associated with the
VF already.

In every flow where ice_vc_isvalid_q_id() is called, the PF driver already
has a pointer to the VSI associated with the VF. This pointer is obtained
using ice_get_vf_vsi(), rather than looking up the VSI using the index sent
by the VF.

Since we already know which VSI to operate on, we can modify
ice_vc_isvalid_q_id() to take a VSI pointer instead of a VSI index. Pass
the VSI we found from ice_get_vf_vsi() instead of re-doing the lookup. This
removes some unnecessary computation and scanning of the VSI list.

It also removes the last place where the driver directly used the VSI
number from the VF. This will pave the way for refactoring to communicate
relative VSI numbers to the VF instead of absolute numbers from the PF
space.

Signed-off-by: Jacob Keller &lt;jacob.e.keller@intel.com&gt;
Reviewed-by: Przemek Kitszel &lt;przemyslaw.kitszel@intel.com&gt;
Tested-by: Rafal Romanowski &lt;rafal.romanowski@intel.com&gt;
Signed-off-by: Tony Nguyen &lt;anthony.l.nguyen@intel.com&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 a21605993dd5dfd15edfa7f06705ede17b519026 upstream.

The ice_vc_isvalid_q_id() function takes a VSI index and a queue ID. It
looks up the VSI from its index, and then validates that the queue number
is valid for that VSI.

The VSI ID passed is typically a VSI index from the VF. This VSI number is
validated by the PF to ensure that it matches the VSI associated with the
VF already.

In every flow where ice_vc_isvalid_q_id() is called, the PF driver already
has a pointer to the VSI associated with the VF. This pointer is obtained
using ice_get_vf_vsi(), rather than looking up the VSI using the index sent
by the VF.

Since we already know which VSI to operate on, we can modify
ice_vc_isvalid_q_id() to take a VSI pointer instead of a VSI index. Pass
the VSI we found from ice_get_vf_vsi() instead of re-doing the lookup. This
removes some unnecessary computation and scanning of the VSI list.

It also removes the last place where the driver directly used the VSI
number from the VF. This will pave the way for refactoring to communicate
relative VSI numbers to the VF instead of absolute numbers from the PF
space.

Signed-off-by: Jacob Keller &lt;jacob.e.keller@intel.com&gt;
Reviewed-by: Przemek Kitszel &lt;przemyslaw.kitszel@intel.com&gt;
Tested-by: Rafal Romanowski &lt;rafal.romanowski@intel.com&gt;
Signed-off-by: Tony Nguyen &lt;anthony.l.nguyen@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: ks8851: Fix another TX stall caused by wrong ISR flag handling</title>
<updated>2024-05-25T14:22:52+00:00</updated>
<author>
<name>Ronald Wahl</name>
<email>ronald.wahl@raritan.com</email>
</author>
<published>2024-05-13T14:39:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3a7ac4902917a044854ae466edbb7520419a9a33'/>
<id>3a7ac4902917a044854ae466edbb7520419a9a33</id>
<content type='text'>
commit 317a215d493230da361028ea8a4675de334bfa1a upstream.

Under some circumstances it may happen that the ks8851 Ethernet driver
stops sending data.

Currently the interrupt handler resets the interrupt status flags in the
hardware after handling TX. With this approach we may lose interrupts in
the time window between handling the TX interrupt and resetting the TX
interrupt status bit.

When all of the three following conditions are true then transmitting
data stops:

  - TX queue is stopped to wait for room in the hardware TX buffer
  - no queued SKBs in the driver (txq) that wait for being written to hw
  - hardware TX buffer is empty and the last TX interrupt was lost

This is because reenabling the TX queue happens when handling the TX
interrupt status but if the TX status bit has already been cleared then
this interrupt will never come.

With this commit the interrupt status flags will be cleared before they
are handled. That way we stop losing interrupts.

The wrong handling of the ISR flags was there from the beginning but
with commit 3dc5d4454545 ("net: ks8851: Fix TX stall caused by TX
buffer overrun") the issue becomes apparent.

Fixes: 3dc5d4454545 ("net: ks8851: Fix TX stall caused by TX buffer overrun")
Cc: "David S. Miller" &lt;davem@davemloft.net&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Cc: Jakub Kicinski &lt;kuba@kernel.org&gt;
Cc: Paolo Abeni &lt;pabeni@redhat.com&gt;
Cc: Simon Horman &lt;horms@kernel.org&gt;
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Ronald Wahl &lt;ronald.wahl@raritan.com&gt;
Reviewed-by: Simon Horman &lt;horms@kernel.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&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 317a215d493230da361028ea8a4675de334bfa1a upstream.

Under some circumstances it may happen that the ks8851 Ethernet driver
stops sending data.

Currently the interrupt handler resets the interrupt status flags in the
hardware after handling TX. With this approach we may lose interrupts in
the time window between handling the TX interrupt and resetting the TX
interrupt status bit.

When all of the three following conditions are true then transmitting
data stops:

  - TX queue is stopped to wait for room in the hardware TX buffer
  - no queued SKBs in the driver (txq) that wait for being written to hw
  - hardware TX buffer is empty and the last TX interrupt was lost

This is because reenabling the TX queue happens when handling the TX
interrupt status but if the TX status bit has already been cleared then
this interrupt will never come.

With this commit the interrupt status flags will be cleared before they
are handled. That way we stop losing interrupts.

The wrong handling of the ISR flags was there from the beginning but
with commit 3dc5d4454545 ("net: ks8851: Fix TX stall caused by TX
buffer overrun") the issue becomes apparent.

Fixes: 3dc5d4454545 ("net: ks8851: Fix TX stall caused by TX buffer overrun")
Cc: "David S. Miller" &lt;davem@davemloft.net&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Cc: Jakub Kicinski &lt;kuba@kernel.org&gt;
Cc: Paolo Abeni &lt;pabeni@redhat.com&gt;
Cc: Simon Horman &lt;horms@kernel.org&gt;
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Ronald Wahl &lt;ronald.wahl@raritan.com&gt;
Reviewed-by: Simon Horman &lt;horms@kernel.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: bcmgenet: synchronize UMAC_CMD access</title>
<updated>2024-05-17T10:02:32+00:00</updated>
<author>
<name>Doug Berger</name>
<email>opendmb@gmail.com</email>
</author>
<published>2024-04-25T22:27:21+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=00d1a1bc1f8226094fde5c3a56fcf2812eafcd97'/>
<id>00d1a1bc1f8226094fde5c3a56fcf2812eafcd97</id>
<content type='text'>
commit 0d5e2a82232605b337972fb2c7d0cbc46898aca1 upstream.

The UMAC_CMD register is written from different execution
contexts and has insufficient synchronization protections to
prevent possible corruption. Of particular concern are the
acceses from the phy_device delayed work context used by the
adjust_link call and the BH context that may be used by the
ndo_set_rx_mode call.

A spinlock is added to the driver to protect contended register
accesses (i.e. reg_lock) and it is used to synchronize accesses
to UMAC_CMD.

Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger &lt;opendmb@gmail.com&gt;
Acked-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&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 0d5e2a82232605b337972fb2c7d0cbc46898aca1 upstream.

The UMAC_CMD register is written from different execution
contexts and has insufficient synchronization protections to
prevent possible corruption. Of particular concern are the
acceses from the phy_device delayed work context used by the
adjust_link call and the BH context that may be used by the
ndo_set_rx_mode call.

A spinlock is added to the driver to protect contended register
accesses (i.e. reg_lock) and it is used to synchronize accesses
to UMAC_CMD.

Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger &lt;opendmb@gmail.com&gt;
Acked-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: bcmgenet: synchronize use of bcmgenet_set_rx_mode()</title>
<updated>2024-05-17T10:02:32+00:00</updated>
<author>
<name>Doug Berger</name>
<email>opendmb@gmail.com</email>
</author>
<published>2024-04-25T22:27:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=51b72afb0db96a1bb3d3e888a035472df81e08e6'/>
<id>51b72afb0db96a1bb3d3e888a035472df81e08e6</id>
<content type='text'>
commit 2dbe5f19368caae63b1f59f5bc2af78c7d522b3a upstream.

The ndo_set_rx_mode function is synchronized with the
netif_addr_lock spinlock and BHs disabled. Since this
function is also invoked directly from the driver the
same synchronization should be applied.

Fixes: 72f96347628e ("net: bcmgenet: set Rx mode before starting netif")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger &lt;opendmb@gmail.com&gt;
Acked-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&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 2dbe5f19368caae63b1f59f5bc2af78c7d522b3a upstream.

The ndo_set_rx_mode function is synchronized with the
netif_addr_lock spinlock and BHs disabled. Since this
function is also invoked directly from the driver the
same synchronization should be applied.

Fixes: 72f96347628e ("net: bcmgenet: set Rx mode before starting netif")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger &lt;opendmb@gmail.com&gt;
Acked-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: bcmgenet: synchronize EXT_RGMII_OOB_CTRL access</title>
<updated>2024-05-17T10:02:32+00:00</updated>
<author>
<name>Doug Berger</name>
<email>opendmb@gmail.com</email>
</author>
<published>2024-04-25T22:27:19+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8b3845de02f9040de8696db2ff67ed004fc7cb8f'/>
<id>8b3845de02f9040de8696db2ff67ed004fc7cb8f</id>
<content type='text'>
commit d85cf67a339685beae1d0aee27b7f61da95455be upstream.

The EXT_RGMII_OOB_CTRL register can be written from different
contexts. It is predominantly written from the adjust_link
handler which is synchronized by the phydev-&gt;lock, but can
also be written from a different context when configuring the
mii in bcmgenet_mii_config().

The chances of contention are quite low, but it is conceivable
that adjust_link could occur during resume when WoL is enabled
so use the phydev-&gt;lock synchronizer in bcmgenet_mii_config()
to be sure.

Fixes: afe3f907d20f ("net: bcmgenet: power on MII block for all MII modes")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger &lt;opendmb@gmail.com&gt;
Acked-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&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 d85cf67a339685beae1d0aee27b7f61da95455be upstream.

The EXT_RGMII_OOB_CTRL register can be written from different
contexts. It is predominantly written from the adjust_link
handler which is synchronized by the phydev-&gt;lock, but can
also be written from a different context when configuring the
mii in bcmgenet_mii_config().

The chances of contention are quite low, but it is conceivable
that adjust_link could occur during resume when WoL is enabled
so use the phydev-&gt;lock synchronizer in bcmgenet_mii_config()
to be sure.

Fixes: afe3f907d20f ("net: bcmgenet: power on MII block for all MII modes")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger &lt;opendmb@gmail.com&gt;
Acked-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>e1000e: change usleep_range to udelay in PHY mdic access</title>
<updated>2024-05-17T10:02:31+00:00</updated>
<author>
<name>Vitaly Lifshits</name>
<email>vitaly.lifshits@intel.com</email>
</author>
<published>2024-04-29T17:10:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=f8a139656c95db893a543159873c57a470d7376d'/>
<id>f8a139656c95db893a543159873c57a470d7376d</id>
<content type='text'>
commit 387f295cb2150ed164905b648d76dfcbd3621778 upstream.

This is a partial revert of commit 6dbdd4de0362 ("e1000e: Workaround
for sporadic MDI error on Meteor Lake systems"). The referenced commit
used usleep_range inside the PHY access routines, which are sometimes
called from an atomic context. This can lead to a kernel panic in some
scenarios, such as cable disconnection and reconnection on vPro systems.

Solve this by changing the usleep_range calls back to udelay.

Fixes: 6dbdd4de0362 ("e1000e: Workaround for sporadic MDI error on Meteor Lake systems")
Cc: stable@vger.kernel.org
Reported-by: Jérôme Carretero &lt;cJ@zougloub.eu&gt;
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218740
Closes: https://lore.kernel.org/lkml/a7eb665c74b5efb5140e6979759ed243072cb24a.camel@zougloub.eu/
Co-developed-by: Sasha Neftin &lt;sasha.neftin@intel.com&gt;
Signed-off-by: Sasha Neftin &lt;sasha.neftin@intel.com&gt;
Signed-off-by: Vitaly Lifshits &lt;vitaly.lifshits@intel.com&gt;
Tested-by: Dima Ruinskiy &lt;dima.ruinskiy@intel.com&gt;
Signed-off-by: Tony Nguyen &lt;anthony.l.nguyen@intel.com&gt;
Reviewed-by: Simon Horman &lt;horms@kernel.org&gt;
Link: https://lore.kernel.org/r/20240429171040.1152516-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski &lt;kuba@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 387f295cb2150ed164905b648d76dfcbd3621778 upstream.

This is a partial revert of commit 6dbdd4de0362 ("e1000e: Workaround
for sporadic MDI error on Meteor Lake systems"). The referenced commit
used usleep_range inside the PHY access routines, which are sometimes
called from an atomic context. This can lead to a kernel panic in some
scenarios, such as cable disconnection and reconnection on vPro systems.

Solve this by changing the usleep_range calls back to udelay.

Fixes: 6dbdd4de0362 ("e1000e: Workaround for sporadic MDI error on Meteor Lake systems")
Cc: stable@vger.kernel.org
Reported-by: Jérôme Carretero &lt;cJ@zougloub.eu&gt;
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218740
Closes: https://lore.kernel.org/lkml/a7eb665c74b5efb5140e6979759ed243072cb24a.camel@zougloub.eu/
Co-developed-by: Sasha Neftin &lt;sasha.neftin@intel.com&gt;
Signed-off-by: Sasha Neftin &lt;sasha.neftin@intel.com&gt;
Signed-off-by: Vitaly Lifshits &lt;vitaly.lifshits@intel.com&gt;
Tested-by: Dima Ruinskiy &lt;dima.ruinskiy@intel.com&gt;
Signed-off-by: Tony Nguyen &lt;anthony.l.nguyen@intel.com&gt;
Reviewed-by: Simon Horman &lt;horms@kernel.org&gt;
Link: https://lore.kernel.org/r/20240429171040.1152516-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski &lt;kuba@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: dsa: mv88e6xxx: add phylink_get_caps for the mv88e6320/21 family</title>
<updated>2024-05-17T10:02:25+00:00</updated>
<author>
<name>Steffen Bätz</name>
<email>steffen@innosonix.de</email>
</author>
<published>2024-05-08T07:29:43+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=7019a64165186fd3fb5ba928a6347558dc560093'/>
<id>7019a64165186fd3fb5ba928a6347558dc560093</id>
<content type='text'>
[ Upstream commit f39bf3cf08a49e7d20c44bc8bc8e390fea69959a ]

As of commit de5c9bf40c45 ("net: phylink: require supported_interfaces to
be filled")
Marvell 88e6320/21 switches fail to be probed:

...
mv88e6085 30be0000.ethernet-1:00: phylink: error: empty supported_interfaces
error creating PHYLINK: -22
...

The problem stems from the use of mv88e6185_phylink_get_caps() to get
the device capabilities.
Since there are serdes only ports 0/1 included, create a new dedicated
phylink_get_caps for the 6320 and 6321 to properly support their
set of capabilities.

Fixes: de5c9bf40c45 ("net: phylink: require supported_interfaces to be filled")
Signed-off-by: Steffen Bätz &lt;steffen@innosonix.de&gt;
Reviewed-by: Andrew Lunn &lt;andrew@lunn.ch&gt;
Reviewed-by: Fabio Estevam &lt;festevam@gmail.com&gt;
Link: https://lore.kernel.org/r/20240508072944.54880-2-steffen@innosonix.de
Signed-off-by: Paolo Abeni &lt;pabeni@redhat.com&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 f39bf3cf08a49e7d20c44bc8bc8e390fea69959a ]

As of commit de5c9bf40c45 ("net: phylink: require supported_interfaces to
be filled")
Marvell 88e6320/21 switches fail to be probed:

...
mv88e6085 30be0000.ethernet-1:00: phylink: error: empty supported_interfaces
error creating PHYLINK: -22
...

The problem stems from the use of mv88e6185_phylink_get_caps() to get
the device capabilities.
Since there are serdes only ports 0/1 included, create a new dedicated
phylink_get_caps for the 6320 and 6321 to properly support their
set of capabilities.

Fixes: de5c9bf40c45 ("net: phylink: require supported_interfaces to be filled")
Signed-off-by: Steffen Bätz &lt;steffen@innosonix.de&gt;
Reviewed-by: Andrew Lunn &lt;andrew@lunn.ch&gt;
Reviewed-by: Fabio Estevam &lt;festevam@gmail.com&gt;
Link: https://lore.kernel.org/r/20240508072944.54880-2-steffen@innosonix.de
Signed-off-by: Paolo Abeni &lt;pabeni@redhat.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: hns3: fix kernel crash when devlink reload during initialization</title>
<updated>2024-05-17T10:02:25+00:00</updated>
<author>
<name>Yonglong Liu</name>
<email>liuyonglong@huawei.com</email>
</author>
<published>2024-05-07T13:42:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5c623fe0534806b627054da09b6f51b7b2f7b9cd'/>
<id>5c623fe0534806b627054da09b6f51b7b2f7b9cd</id>
<content type='text'>
[ Upstream commit 35d92abfbad88cf947c010baf34b075e40566095 ]

The devlink reload process will access the hardware resources,
but the register operation is done before the hardware is initialized.
So, processing the devlink reload during initialization may lead to kernel
crash.

This patch fixes this by registering the devlink after
hardware initialization.

Fixes: cd6242991d2e ("net: hns3: add support for registering devlink for VF")
Fixes: 93305b77ffcb ("net: hns3: fix kernel crash when devlink reload during pf initialization")
Signed-off-by: Yonglong Liu &lt;liuyonglong@huawei.com&gt;
Signed-off-by: Jijie Shao &lt;shaojijie@huawei.com&gt;
Signed-off-by: Paolo Abeni &lt;pabeni@redhat.com&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 35d92abfbad88cf947c010baf34b075e40566095 ]

The devlink reload process will access the hardware resources,
but the register operation is done before the hardware is initialized.
So, processing the devlink reload during initialization may lead to kernel
crash.

This patch fixes this by registering the devlink after
hardware initialization.

Fixes: cd6242991d2e ("net: hns3: add support for registering devlink for VF")
Fixes: 93305b77ffcb ("net: hns3: fix kernel crash when devlink reload during pf initialization")
Signed-off-by: Yonglong Liu &lt;liuyonglong@huawei.com&gt;
Signed-off-by: Jijie Shao &lt;shaojijie@huawei.com&gt;
Signed-off-by: Paolo Abeni &lt;pabeni@redhat.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
