[PATCH 4/4] drm/i915/gt: Use proper sleeping functions for timeouts shorter than 20ms

[Andi Shyti]

msleep is very unprecise for timeouts shorter than 20
milliseconds and most probably will sleep longer. Use
uslee_range() instead.

Signed-off-by: Andi Shyti <andi.sh...@linux.intel.com>
---
 drivers/gpu/drm/i915/gt/selftest_rc6.c | 3 ++-
 drivers/gpu/drm/i915/gt/selftest_tlb.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.c 
b/drivers/gpu/drm/i915/gt/selftest_rc6.c
index 908483ab0bc8..99de5d85a096 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.c
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.c
@@ -60,7 +60,8 @@ int live_rc6_manual(void *arg)
 
        /* Force RC6 off for starters */
        __intel_rc6_disable(rc6);
-       msleep(1); /* wakeup is not immediate, takes about 100us on icl */
+       /* wakeup is not immediate, takes about 100us on icl */
+       usleep_range(1000, 2000);
 
        res[0] = rc6_residency(rc6);
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_tlb.c 
b/drivers/gpu/drm/i915/gt/selftest_tlb.c
index 3941f2d6fa47..69ed946a39e5 100644
--- a/drivers/gpu/drm/i915/gt/selftest_tlb.c
+++ b/drivers/gpu/drm/i915/gt/selftest_tlb.c
@@ -143,7 +143,7 @@ pte_tlbinv(struct intel_context *ce,
        if (ce->engine->class == OTHER_CLASS)
                msleep(200);
        else
-               msleep(10);
+               usleep_range(10000, 20000);
 
        if (va == vb) {
                if (!i915_request_completed(rq)) {
-- 
2.47.2