drm/xe: Removing extra mem_access protection from runtime pm

This is not needed any longer, now that we have all the protection
in place with the runtime pm itself.

Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240417203952.25503-7-rodrigo.vivi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Author: rodrigovivi

drivers/gpu/drm/xe/xe_device.c

@@ -717,14 +717,6 @@ u32 xe_device_ccs_bytes(struct xe_device *xe, u64 size)
 		DIV_ROUND_UP_ULL(size, NUM_BYTES_PER_CCS_BYTE(xe)) : 0;
 }
 
-bool xe_device_mem_access_ongoing(struct xe_device *xe)
-{
-	if (xe_pm_read_callback_task(xe) != NULL)
-		return true;
-
-	return atomic_read(&xe->mem_access.ref);
-}
-
 /**
  * xe_device_assert_mem_access - Inspect the current runtime_pm state.
  * @xe: xe device instance

drivers/gpu/drm/xe/xe_device.h

@@ -138,7 +138,6 @@ bool xe_device_mem_access_get_if_ongoing(struct xe_device *xe);
 void xe_device_mem_access_put(struct xe_device *xe);
 
 void xe_device_assert_mem_access(struct xe_device *xe);
-bool xe_device_mem_access_ongoing(struct xe_device *xe);
 
 static inline bool xe_device_in_fault_mode(struct xe_device *xe)
 {

drivers/gpu/drm/xe/xe_pm.c

@@ -306,9 +306,6 @@ int xe_pm_runtime_suspend(struct xe_device *xe)
 	u8 id;
 	int err = 0;
 
-	if (xe->d3cold.allowed && xe_device_mem_access_ongoing(xe))
-		return -EBUSY;
-
 	/* Disable access_ongoing asserts and prevent recursive pm calls */
 	xe_pm_write_callback_task(xe, current);