Since i915_gem_create_context() function return error pointers, the kernel_context() function does not return null, It returns error pointers too. Using IS_ERR() to check the return value to fix this.

Signed-off-by: Miaoqian Lin linmq006@gmail.com --- Changes in v2: - clean up unneeded initialization of err. --- drivers/gpu/drm/i915/gt/selftest_execlists.c | 43 ++++++++++++++------ 1 file changed, 30 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c index b367ecfa42de..0d453ddcede4 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -1531,7 +1531,7 @@ static int live_busywait_preempt(void *arg) struct drm_i915_gem_object *obj; struct i915_vma *vma; enum intel_engine_id id; - int err = -ENOMEM; + int err; u32 *map;

/* @@ -1540,13 +1540,16 @@ static int live_busywait_preempt(void *arg) */

ctx_hi = kernel_context(gt->i915, NULL); - if (!ctx_hi) - return -ENOMEM; + if (IS_ERR(ctx_hi)) + return IS_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); @@ -1742,13 +1745,17 @@ static int live_preempt(void *arg) goto err_spin_hi;

ctx_hi = kernel_context(gt->i915, NULL); - if (!ctx_hi) + if (IS_ERR(ctx_hi)) { + err = PTR_ERR(ctx_hi); goto err_spin_lo; + } 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;

for_each_engine(engine, gt, id) { @@ -1834,12 +1841,16 @@ static int live_late_preempt(void *arg) goto err_spin_hi;

ctx_hi = kernel_context(gt->i915, NULL); - if (!ctx_hi) + if (IS_ERR(ctx_hi)) { + err = PTR_ERR(ctx_hi); goto err_spin_lo; + }

ctx_lo = kernel_context(gt->i915, NULL); - if (!ctx_lo) + if (IS_ERR(ctx_lo)) { + err = PTR_ERR(ctx_lo); goto err_ctx_hi; + }

/* Make sure ctx_lo stays before ctx_hi until we trigger preemption. */ ctx_lo->sched.priority = 1; @@ -1928,8 +1939,8 @@ struct preempt_client { static int preempt_client_init(struct intel_gt *gt, struct preempt_client *c) { c->ctx = kernel_context(gt->i915, NULL); - if (!c->ctx) - return -ENOMEM; + if (IS_ERR(c->ctx)) + return PTR_ERR(c->ctx);

if (igt_spinner_init(&c->spin, gt)) goto err_ctx; @@ -3385,13 +3396,17 @@ static int live_preempt_timeout(void *arg) return -ENOMEM;

ctx_hi = kernel_context(gt->i915, NULL); - if (!ctx_hi) + if (IS_ERR(ctx_hi)) { + err = PTR_ERR(ctx_hi); goto err_spin_lo; + } 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;

for_each_engine(engine, gt, id) { @@ -3683,8 +3698,10 @@ static int live_preempt_smoke(void *arg)

for (n = 0; n < smoke.ncontext; n++) { smoke.contexts[n] = kernel_context(smoke.gt->i915, NULL); - if (!smoke.contexts[n]) + if (IS_ERR(smoke.contexts[n])) { + err = PTR_ERR(smoke.contexts[n]); goto err_ctx; + } }

for (n = 0; n < ARRAY_SIZE(phase); n++) {