[Intel-xe] [PATCH] drm/xe: Fail xe_device_create() if wq allocation fails

[Gustavo Sousa]

Let's make sure we give the driver a valid workqueue.

While at it, also make sure to call destroy_workqueue() only if the
workqueue is a valid one. That is necessary because xe_device_destroy()
is indirectly called as part of the cleanup process of a failed
xe_device_create().

Signed-off-by: Gustavo Sousa <gustavo.sousa at intel.com>
---
 drivers/gpu/drm/xe/xe_device.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index f7f6a6a97757..775a2940c916 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -10,6 +10,7 @@
 #include <drm/drm_gem_ttm_helper.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_managed.h>
+#include <drm/drm_print.h>
 #include <drm/xe_drm.h>
 
 #include "regs/xe_regs.h"
@@ -161,7 +162,9 @@ static void xe_device_destroy(struct drm_device *dev, void *dummy)
 {
 	struct xe_device *xe = to_xe_device(dev);
 
-	destroy_workqueue(xe->ordered_wq);
+	if (xe->ordered_wq)
+		destroy_workqueue(xe->ordered_wq);
+
 	ttm_device_fini(&xe->ttm);
 }
 
@@ -207,6 +210,11 @@ struct xe_device *xe_device_create(struct pci_dev *pdev,
 	INIT_LIST_HEAD(&xe->pinned.evicted);
 
 	xe->ordered_wq = alloc_ordered_workqueue("xe-ordered-wq", 0);
+	if (!xe->ordered_wq) {
+		drm_err(&xe->drm, "Failed to allocate xe-ordered-wq\n");
+		err = -ENOMEM;
+		goto err_put;
+	}
 
 	err = xe_display_create(xe);
 	if (WARN_ON(err))
-- 
2.40.1