[igt-dev] [PATCH i-g-t 1/4] lib/igt_kms: Add igt_connector_sysfs_open()

[Ville Syrjälä]

On Tue, Dec 03, 2019 at 04:22:05PM +0000, Chris Wilson wrote:
> Quoting Ville Syrjala (2019-12-03 15:35:52)
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > 
> > Add a helper to open the sysfs directory for a connector.
> > 
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > ---
> >  lib/igt_kms.c | 34 ++++++++++++++++++++++++++++++++++
> >  lib/igt_kms.h |  3 +++
> >  2 files changed, 37 insertions(+)
> > 
> > diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> > index 44647a2263bd..74ae98d774f1 100644
> > --- a/lib/igt_kms.c
> > +++ b/lib/igt_kms.c
> > @@ -965,6 +965,40 @@ static void reset_connectors_at_exit(int sig)
> >         igt_reset_connectors();
> >  }
> >  
> > +static char *kmstest_connector_dirname(int idx,
> > +                                      uint32_t connector_type,
> > +                                      uint32_t connector_type_id,
> > +                                      char *name, int namelen)
> > +{
> > +       snprintf(name, namelen, "card%d-%s-%d", idx,
> > +                kmstest_connector_type_str(connector_type),
> > +                connector_type_id);
> > +
> > +       return name;
> > +}
> > +
> > +int igt_connector_sysfs_open(int drm_fd,
> > +                            drmModeConnector *connector)
> > +{
> > +       char name[80];
> > +       int dir, conn_dir;
> > +
> > +       dir = igt_sysfs_open(drm_fd);
> > +       if (dir < 0)
> > +               return dir;
> > +
> > +       if (!kmstest_connector_dirname(igt_device_get_card_index(drm_fd),
> > +                                      connector->connector_type,
> > +                                      connector->connector_type_id,
> > +                                      name, sizeof(name)))
> > +               return -1;
> 
> Before igt_sysfs_open() or close(dir);

Just realized that this never even returns NULL unless you pass in
NULL. I'll just drop the check.

> 
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
> -Chris

-- 
Ville Syrjälä
Intel