accel/ivpu: Do not access HW registers after unbind

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We should not access hardware after we unbind from the bus.

Use drm_dev_enter() / drm_dev_exit() to mark code sections where
hardware is accessed (and not already protected by other locks)
and drm_dev_unplug() to mark device is gone.

Fixes: 35b137630f ("accel/ivpu: Introduce a new DRM driver for Intel VPU")
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323125504.2586442-2-stanislaw.gruszka@linux.intel.com

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This commit is contained in:

Stanislaw Gruszka 2023-03-23 13:54:57 +01:00 • committed by Jacek Lawrynowicz

parent 1a70ca89d5

commit 4522ad764d

3 changed files with 16 additions and 4 deletions

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8

drivers/accel/ivpu/ivpu_drv.c

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1

drivers/accel/ivpu/ivpu_drv.h

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11

drivers/accel/ivpu/ivpu_job.c

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