linux-stable.git/drivers/misc/mei, branch linux-6.8.y Linux kernel stable tree mei: me: add lunar lake point M DID 2024-05-17T10:15:05+00:00 Alexander Usyskin alexander.usyskin@intel.com 2024-04-21T13:56:31+00:00 c76015b950e37a8eb662a8d53172790850d426f3 commit 4108a30f1097eead0f6bd5d885e6bf093b4d460f upstream. Add Lunar (Point) Lake M device id. Cc: stable@vger.kernel.org Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240421135631.223362-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 4108a30f1097eead0f6bd5d885e6bf093b4d460f upstream.

Add Lunar (Point) Lake M device id.

Cc: stable@vger.kernel.org
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240421135631.223362-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei: me: disable RPL-S on SPS and IGN firmwares 2024-04-27T15:13:00+00:00 Alexander Usyskin alexander.usyskin@intel.com 2024-03-12T05:19:58+00:00 aec07465ba1b84406b2493b69db257dbff15778c commit 0dc04112bee6fdd6eb847ccb32214703022c0269 upstream. Extend the quirk to disable MEI interface on Intel PCH Ignition (IGN) and SPS firmwares for RPL-S devices. These firmwares do not support the MEI protocol. Fixes: 3ed8c7d39cfe ("mei: me: add raptor lake point S DID") Cc: stable@vger.kernel.org Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240312051958.118478-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 0dc04112bee6fdd6eb847ccb32214703022c0269 upstream.

Extend the quirk to disable MEI interface on Intel PCH Ignition (IGN)
and SPS firmwares for RPL-S devices. These firmwares do not support
the MEI protocol.

Fixes: 3ed8c7d39cfe ("mei: me: add raptor lake point S DID")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240312051958.118478-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei: vsc: Unregister interrupt handler for system suspend 2024-04-27T15:13:00+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2024-04-03T05:13:41+00:00 c6d8db1a49a329bce5d1eb7947733e4baa18a42d commit f6085a96c97387154be7eaebd1a5420eb3cd55dc upstream. Unregister the MEI VSC interrupt handler before system suspend and re-register it at system resume time. This mirrors implementation of other MEI devices. This patch fixes the bug that causes continuous stream of MEI VSC errors after system resume. Fixes: 386a766c4169 ("mei: Add MEI hardware support for IVSC device") Cc: stable@vger.kernel.org # for 6.8 Reported-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Wentong Wu <wentong.wu@intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240403051341.3534650-2-wentong.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit f6085a96c97387154be7eaebd1a5420eb3cd55dc upstream.

Unregister the MEI VSC interrupt handler before system suspend and
re-register it at system resume time. This mirrors implementation of other
MEI devices.

This patch fixes the bug that causes continuous stream of MEI VSC errors
after system resume.

Fixes: 386a766c4169 ("mei: Add MEI hardware support for IVSC device")
Cc: stable@vger.kernel.org # for 6.8
Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240403051341.3534650-2-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Revert "mei: vsc: Call wake_up() in the threaded IRQ handler" 2024-04-27T15:13:00+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2024-04-03T05:13:40+00:00 e73fcc50e89f4658ebb10c3f4f54901bfb6628b3 commit e3dc66d998d2b0c2734db9ca1d6c94c97349529a upstream. This reverts commit 058a38acba15fd8e7b262ec6e17c4204cb15f984. It's not necessary to avoid a spinlock, a sleeping lock on PREEMPT_RT, in an interrupt handler as the interrupt handler itself would be called in a process context if PREEMPT_RT is enabled. So revert the patch. Cc: stable@vger.kernel.org # for 6.8 Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240403051341.3534650-1-wentong.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit e3dc66d998d2b0c2734db9ca1d6c94c97349529a upstream.

This reverts commit 058a38acba15fd8e7b262ec6e17c4204cb15f984.

It's not necessary to avoid a spinlock, a sleeping lock on PREEMPT_RT, in
an interrupt handler as the interrupt handler itself would be called in a
process context if PREEMPT_RT is enabled. So revert the patch.

Cc: stable@vger.kernel.org # for 6.8
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240403051341.3534650-1-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei: vsc: Don't use sleeping condition in wait_event_timeout() 2024-03-26T22:17:30+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2024-02-19T19:58:06+00:00 982f109fb81b8d7d2220b67a65b9db448d6ab29f [ Upstream commit b8b19acfafdeacbedd4e2795cb18c81c4d8bb6cc ] vsc_tp_wakeup_request() called wait_event_timeout() with gpiod_get_value_cansleep() which may sleep, and does so as the implementation is that of gpio-ljca. Move the GPIO state check outside the call. Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device") Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Tested-and-Reviewed-by: Wentong Wu <wentong.wu@intel.com> Link: https://lore.kernel.org/r/20240219195807.517742-3-sakari.ailus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit b8b19acfafdeacbedd4e2795cb18c81c4d8bb6cc ]

vsc_tp_wakeup_request() called wait_event_timeout() with
gpiod_get_value_cansleep() which may sleep, and does so as the
implementation is that of gpio-ljca.

Move the GPIO state check outside the call.

Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-and-Reviewed-by: Wentong Wu <wentong.wu@intel.com>
Link: https://lore.kernel.org/r/20240219195807.517742-3-sakari.ailus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
mei: vsc: Call wake_up() in the threaded IRQ handler 2024-03-26T22:17:30+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2024-02-19T19:58:05+00:00 76a5e0951a4f12685261c65f2cab6372c64cf363 [ Upstream commit 058a38acba15fd8e7b262ec6e17c4204cb15f984 ] The hard IRQ handler vsc_tp_irq() is called with a raw spinlock taken. wake_up() acquires a spinlock, a sleeping lock on PREEMPT_RT. This leads to sleeping in atomic context. Move the wake_up() call to the threaded IRQ handler vsc_tp_thread_isr() where it can be safely called. Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device") Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Tested-and-Reviewed-by: Wentong Wu <wentong.wu@intel.com> Link: https://lore.kernel.org/r/20240219195807.517742-2-sakari.ailus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 058a38acba15fd8e7b262ec6e17c4204cb15f984 ]

The hard IRQ handler vsc_tp_irq() is called with a raw spinlock taken.
wake_up() acquires a spinlock, a sleeping lock on PREEMPT_RT. This leads
to sleeping in atomic context.

Move the wake_up() call to the threaded IRQ handler vsc_tp_thread_isr()
where it can be safely called.

Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-and-Reviewed-by: Wentong Wu <wentong.wu@intel.com>
Link: https://lore.kernel.org/r/20240219195807.517742-2-sakari.ailus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
mei: gsc_proxy: match component when GSC is on different bus 2024-03-05T14:30:09+00:00 Alexander Usyskin alexander.usyskin@intel.com 2024-02-20T20:00:20+00:00 a0776c214d47ea4f7aaef138095beaa41cff03ef On Arrow Lake S systems, MEI is no longer strictly connected to bus 0, while graphics remain exclusively on bus 0. Adapt the component matching logic to accommodate this change: Original behavior: Required both MEI and graphics to be on the same bus 0. New behavior: Only enforces graphics to be on bus 0 (integrated), allowing MEI to reside on any bus. This ensures compatibility with Arrow Lake S and maintains functionality for the legacy systems. Fixes: 1dd924f6885b ("mei: gsc_proxy: add gsc proxy driver") Cc: stable@vger.kernel.org # v6.3+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240220200020.231192-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
On Arrow Lake S systems, MEI is no longer strictly connected to bus 0,
while graphics remain exclusively on bus 0. Adapt the component
matching logic to accommodate this change:

Original behavior: Required both MEI and graphics to be on the same
bus 0.

New behavior: Only enforces graphics to be on bus 0 (integrated),
allowing MEI to reside on any bus.
This ensures compatibility with Arrow Lake S and maintains functionality
for the legacy systems.

Fixes: 1dd924f6885b ("mei: gsc_proxy: add gsc proxy driver")
Cc: stable@vger.kernel.org # v6.3+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240220200020.231192-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei: Add Meteor Lake support for IVSC device 2024-02-19T10:40:17+00:00 Wentong Wu wentong.wu@intel.com 2024-02-07T00:43:04+00:00 daaf5286b6d2528a73c651aa2d4059bc1bd67c2e Add IVSC device support on Meteor Lake platform. Signed-off-by: Wentong Wu <wentong.wu@intel.com> Cc: stable <stable@kernel.org> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240207004304.31862-1-wentong.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Add IVSC device support on Meteor Lake platform.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Cc: stable <stable@kernel.org>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240207004304.31862-1-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei: me: add arrow lake point H DID 2024-02-19T10:39:13+00:00 Alexander Usyskin alexander.usyskin@intel.com 2024-02-11T10:39:12+00:00 8436f25802ec028ac7254990893f3e01926d9b79 Add Arrow Lake H device id. Cc: stable@vger.kernel.org Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240211103912.117105-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Add Arrow Lake H device id.

Cc: stable@vger.kernel.org
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240211103912.117105-2-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei: me: add arrow lake point S DID 2024-02-19T10:39:13+00:00 Alexander Usyskin alexander.usyskin@intel.com 2024-02-11T10:39:11+00:00 7a9b9012043e126f6d6f4683e67409312d1b707b Add Arrow Lake S device id. Cc: stable@vger.kernel.org Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240211103912.117105-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Add Arrow Lake S device id.

Cc: stable@vger.kernel.org
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20240211103912.117105-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>