This is a note to let you know that I've just added the patch titled
drm/i915/gt: Use the correct error value when kernel_context() fails
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-gt-use-the-correct-error-value-when-kernel_context-fails.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 40023959dbab3c6ad56fa7213770e63d197b69fb Mon Sep 17 00:00:00 2001
From: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
Date: Fri, 26 May 2023 14:41:38 +0200
Subject: drm/i915/gt: Use the correct error value when kernel_context() fails
From: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
commit 40023959dbab3c6ad56fa7213770e63d197b69fb upstream.
kernel_context() returns an error pointer. Use pointer-error
conversion functions to evaluate its return value, rather than
checking for a '0' return.
Fixes: eb5c10cbbc2f ("drm/i915: Remove I915_USER_PRIORITY_SHIFT")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v5.13+
Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
Acked-by: Tejas Upadhyay <tejas.upadhyay@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20230526124138.2006110-1-andi.shyti@xxxxxxxxxxxxxxx
(cherry picked from commit edad9ee94f17adc75d3b13ab51bbe3d615ce1e7e)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/selftest_execlists.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -1531,8 +1531,8 @@ static int live_busywait_preempt(void *a
struct drm_i915_gem_object *obj;
struct i915_vma *vma;
enum intel_engine_id id;
- int err = -ENOMEM;
u32 *map;
+ int err;
/*
* Verify that even without HAS_LOGICAL_RING_PREEMPTION, we can
@@ -1540,13 +1540,17 @@ static int live_busywait_preempt(void *a
*/
ctx_hi = kernel_context(gt->i915, NULL);
- if (!ctx_hi)
- return -ENOMEM;
+ if (IS_ERR(ctx_hi))
+ return PTR_ERR(ctx_hi);
+
ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
ctx_lo = kernel_context(gt->i915, NULL);
- if (!ctx_lo)
+ if (IS_ERR(ctx_lo)) {
+ err = PTR_ERR(ctx_lo);
goto err_ctx_hi;
+ }
+
ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
Patches currently in stable-queue which might be from andi.shyti@xxxxxxxxxxxxxxx are
queue-5.15/drm-i915-selftests-add-some-missing-error-propagatio.patch
queue-5.15/drm-i915-gt-use-the-correct-error-value-when-kernel_context-fails.patch
