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A bunch of fixes to handle:
1. A possible resource leak in scmi_remove(). The returned error
value gets ignored by the driver core and can remove the device and
free the devm-allocated resources. As a simple solution to be able to
easily backport, the bind attributes in the driver is suppressed as
there is no need to support it. Additionally the remove path is cleaned
up by adding device links between the core and the protocol devices
so that a proper and complete unbinding happens.
2. A possible spin-loop in the SCMI transmit path in case of misbehaving
platform firmware. A timeout is added to the existing loop so that
the SCMI stack can bailout aborting the transmission with warnings.
3. Optional Rx channel correctly by reporting any memory errors instead
of ignoring the same with other allowed errors.
4. The use of proper device for all the device managed allocations in the
virtio transport.
5. Incorrect deferred_tx_wq release on the error paths by using devres
API(devm_add_action_or_reset) to manage the release in the error path.
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Merge tag 'scmi-fixes-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
Arm SCMI fixes for v6.1
A bunch of fixes to handle:
1. A possible resource leak in scmi_remove(). The returned error
value gets ignored by the driver core and can remove the device and
free the devm-allocated resources. As a simple solution to be able to
easily backport, the bind attributes in the driver is suppressed as
there is no need to support it. Additionally the remove path is cleaned
up by adding device links between the core and the protocol devices
so that a proper and complete unbinding happens.
2. A possible spin-loop in the SCMI transmit path in case of misbehaving
platform firmware. A timeout is added to the existing loop so that
the SCMI stack can bailout aborting the transmission with warnings.
3. Optional Rx channel correctly by reporting any memory errors instead
of ignoring the same with other allowed errors.
4. The use of proper device for all the device managed allocations in the
virtio transport.
5. Incorrect deferred_tx_wq release on the error paths by using devres
API(devm_add_action_or_reset) to manage the release in the error path.
* tag 'scmi-fixes-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_scmi: Fix deferred_tx_wq release on error paths
firmware: arm_scmi: Fix devres allocation device in virtio transport
firmware: arm_scmi: Make Rx chan_setup fail on memory errors
firmware: arm_scmi: Make tx_prepare time out eventually
firmware: arm_scmi: Suppress the driver's bind attributes
firmware: arm_scmi: Cleanup the core driver removal callback
Link: https://lore.kernel.org/r/20221102140142.2758107-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
f76c745151