From: YoungJun Cho Date: Thu, 14 Aug 2014 02:22:36 +0000 (+0900) Subject: drm/exynos: dsi: fix exynos_dsi_set_pll() wrong return value X-Git-Tag: firefly_0821_release~176^2~3035^2~20^2~39 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8525b5ec90a58b3e56709ffa1667d6593dbe24c3;p=firefly-linux-kernel-4.4.55.git drm/exynos: dsi: fix exynos_dsi_set_pll() wrong return value The type of this function is unsigned long, and it is expected to return proper fout value or zero if something is wrong. So this patch fixes wrong return value for error cases. Signed-off-by: YoungJun Cho Acked-by: Inki Dae Acked-by: Kyungmin Park Acked-by: Andrzej Hajda Signed-off-by: Inki Dae --- diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 442aa2d00132..d3393098f424 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -421,7 +421,7 @@ static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi, if (!fout) { dev_err(dsi->dev, "failed to find PLL PMS for requested frequency\n"); - return -EFAULT; + return 0; } dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s); @@ -453,7 +453,7 @@ static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi, do { if (timeout-- == 0) { dev_err(dsi->dev, "PLL failed to stabilize\n"); - return -EFAULT; + return 0; } reg = readl(dsi->reg_base + DSIM_STATUS_REG); } while ((reg & DSIM_PLL_STABLE) == 0);