[PATCH v2 04/21] drm/exynos: Fix potential unbalanced calls to pm_runtime_put

[Boris Brezillon]

On Fri, 11 Oct 2019 15:54:53 +0200
Andrzej Hajda <a.hajda at samsung.com> wrote:

> On 26.08.2019 17:26, Boris Brezillon wrote:
> > The encoder->enable() can't report errors and is expected to always
> > succeed. If we call pm_runtime_put() in the exynos_dsi_enable() error
> > path (as currently done) we'll have unbalanced get/put calls when
> > encoder->disable() is called.  
> 
> 
> True

I just realized this is actually not the case, because the
DSIM_STATE_ENABLED flag is cleared in the error path, and
exynos_dsi_disable() bails out early when DSIM_STATE_ENABLED is not set.