Fix a couple of building warnings on used uninitialized 'best_m' and
'best_n' local variables by initializing them to zero. This makes compiler
happy only. No functional change.
Fixes: ce62f8ea7e3f ("drm/bridge: imx: Add i.MX93 MIPI DSI support")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Liu Ying <[email protected]>
---
drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c b/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
index 3ff30ce80c5b..7b3b4f985098 100644
--- a/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
@@ -226,8 +226,8 @@ dphy_pll_get_configure_from_opts(struct imx93_dsi *dsi,
unsigned long fout;
unsigned long best_fout = 0;
unsigned int fvco_div;
- unsigned int min_n, max_n, n, best_n;
- unsigned long m, best_m;
+ unsigned int min_n, max_n, n, best_n = 0;
+ unsigned long m, best_m = 0;
unsigned long min_delta = ULONG_MAX;
unsigned long delta;
u64 tmp;
--
2.37.1
On Tue, Nov 21, 2023 at 04:56:44PM +0800, Liu Ying wrote:
> Fix a couple of building warnings on used uninitialized 'best_m' and
> 'best_n' local variables by initializing them to zero. This makes compiler
> happy only. No functional change.
>
> Fixes: ce62f8ea7e3f ("drm/bridge: imx: Add i.MX93 MIPI DSI support")
> Reported-by: kernel test robot <[email protected]>
> Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
> Signed-off-by: Liu Ying <[email protected]>
> ---
> drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c b/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
> index 3ff30ce80c5b..7b3b4f985098 100644
> --- a/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
> @@ -226,8 +226,8 @@ dphy_pll_get_configure_from_opts(struct imx93_dsi *dsi,
> unsigned long fout;
> unsigned long best_fout = 0;
> unsigned int fvco_div;
> - unsigned int min_n, max_n, n, best_n;
> - unsigned long m, best_m;
> + unsigned int min_n, max_n, n, best_n = 0;
> + unsigned long m, best_m = 0;
> unsigned long min_delta = ULONG_MAX;
> unsigned long delta;
> u64 tmp;
N is a divider, so it would probably be better to initialize it to
UINT_MAX to avoid any divide-by-0 error.
Maxime