Quoting Lionel Landwerlin (2019-07-26 14:00:07)
> On 26/07/2019 15:54, Chris Wilson wrote:
> > Smatch warning that the loop may be empty causing us to check err before
> > it had been set. Ensure that it is initialised to 0, just in case.
> >
> > Fixes: a9877da2d629 ("drm/i915/oa: Reconfigure contexts on the fly")
> > Signed-off-by: Chris Wilson <[email protected]>
> > Cc: Lionel Landwerlin <[email protected]>
> > Cc: Tvrtko Ursulin <[email protected]>
> > ---
> > drivers/gpu/drm/i915/i915_perf.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_perf.c
> > b/drivers/gpu/drm/i915/i915_perf.c
> > index 79be9d8ea628..a294c0f53625 100644
> > --- a/drivers/gpu/drm/i915/i915_perf.c
> > +++ b/drivers/gpu/drm/i915/i915_perf.c
> > @@ -1875,6 +1875,7 @@ static int gen8_configure_all_contexts(struct
> > drm_i915_private *i915,
> > if (ctx == i915->kernel_context)
> > continue;
> >
> > + err = 0;
> > for_each_gem_engine(ce,
> > i915_gem_context_lock_engines(ctx),
> > it) {
> Could almost reduce the scope of variable. Regardless :
Yeah, I was tempted. The second loop is a bit uglier with int err, so
left it for later. This loop would look better if we pulled the inner
out into its function.
-Chris
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