drm/tegra: dsi: Replace 1000000000UL by NSEC_PER_SEC

Using the symbolic constant instantly provides a lot more context.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 6646fa2..2f12258 100644 (file)
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -349,7 +349,7 @@ static int tegra_dsi_set_phy_timing(struct tegra_dsi *dsi)
        if (rate < 0)
                return rate;
 
-       period = DIV_ROUND_CLOSEST(1000000000UL, rate * 2);
+       period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, rate * 2);
 
        err = mipi_dphy_timing_get_default(&timing, period);
        if (err < 0)