From: Thomas Zimmermann Date: Wed, 14 Jul 2021 14:22:29 +0000 (+0200) Subject: drm/mgag200: Return errno codes from PLL compute functions X-Git-Tag: v5.15-rc1~32^2~13^2~49 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=08a709467c17e89c824a36cae76626527a4ccbbe;p=tomoyo%2Ftomoyo-test1.git drm/mgag200: Return errno codes from PLL compute functions Return -EINVAL if there's no PLL configuration for the given pixel clock. The returned errors are currently ignored by the caller, but the errno codes will become useful when the compute functions run during atomic checks. v2: * give a rational for this change (Sam) Signed-off-by: Thomas Zimmermann Acked-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20210714142240.21979-3-tzimmermann@suse.de --- diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 1bdf21474bcb..69daa0fd73c9 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -133,7 +133,7 @@ static int mgag200_g200_set_plls(struct mga_device *mdev, long clock) if (clock > p_clk_max) { drm_err(dev, "Pixel Clock %ld too high\n", clock); - return 1; + return -EINVAL; } if (clock < p_clk_min >> 3) @@ -288,7 +288,7 @@ static int mga_g200se_set_plls(struct mga_device *mdev, long clock) if (delta > permitteddelta) { pr_warn("PLL delta too large\n"); - return 1; + return -EINVAL; } WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);