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| author | Thierry Reding <treding@nvidia.com> | 2015-12-03 13:44:17 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2019-10-28 13:18:44 +0300 |
| commit | 1abd6b3304d47ff055063e0d59fc03bb27e0e196 (patch) | |
| tree | e6b2b4d4481e319d182621f1e58849dfdd7d7a09 /drivers/gpu/drm/tegra/dp.c | |
| parent | 0fa5c1bdd2f7dfc3cc5a9b22470fb4ffdbe22272 (diff) | |
| download | linux-1abd6b3304d47ff055063e0d59fc03bb27e0e196.tar.xz | |
drm/tegra: dp: Add drm_dp_link_reset() implementation
Subsequent patches will add non-volatile fields to struct drm_dp_link,
so introduce a function to zero out only the volatile fields.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/dp.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dp.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c index 50ba967ebcbd..c19060b8753a 100644 --- a/drivers/gpu/drm/tegra/dp.c +++ b/drivers/gpu/drm/tegra/dp.c @@ -8,6 +8,17 @@ #include "dp.h" +static void drm_dp_link_reset(struct drm_dp_link *link) +{ + if (!link) + return; + + link->revision = 0; + link->rate = 0; + link->num_lanes = 0; + link->capabilities = 0; +} + /** * drm_dp_link_probe() - probe a DisplayPort link for capabilities * @aux: DisplayPort AUX channel @@ -24,7 +35,7 @@ int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link) u8 values[3]; int err; - memset(link, 0, sizeof(*link)); + drm_dp_link_reset(link); err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values)); if (err < 0) |