[PATCH] drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue()

[Haoxiang Li]

Add check for the return value of alloc_ordered_workqueue()
and alloc_workqueue() to catch potential exception.

Fixes: 40053823baad ("drm/i915/display: move modeset probe/remove functions to 
intel_display_driver.c")
Cc: sta...@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2...@163.com>
---
 drivers/gpu/drm/i915/display/intel_display_driver.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c 
b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 50ec0c3c7588..dfe5b779aefd 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -245,6 +245,11 @@ int intel_display_driver_probe_noirq(struct intel_display 
*display)
                                                WQ_UNBOUND, 
WQ_UNBOUND_MAX_ACTIVE);
        display->wq.cleanup = alloc_workqueue("i915_cleanup", WQ_HIGHPRI, 0);
 
+       if (!display->wq.modeset || !display->wq.flip || !display->wq.cleanup) {
+               ret = -ENOMEM;
+               goto cleanup_vga_client_pw_domain_dmc;
+       }
+
        intel_mode_config_init(display);
 
        ret = intel_cdclk_init(display);
-- 
2.25.1