2020-05-21 13:52:31

by Colin King

[permalink] [raw]
Subject: [PATCH] staging: fbtft: fb_st7789v: make HSD20_IPS numeric and not a string

From: Colin Ian King <[email protected]>

Currently HSD20_IPS is defined as "true" and will always result in a
non-zero result even if it is defined as "false" because it is an array
and that will never be zero. Fix this by defining it as an integer 1
rather than a literal string.

Addessses-Coverity: ("Array compared against 0")
Fixes: f03c9b788472 ("staging: fbtft: fb_st7789v: Initialize the Display")
Signed-off-by: Colin Ian King <[email protected]>
---
drivers/staging/fbtft/fb_st7789v.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
index ebc17e05ecd0..3a280cc1892c 100644
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -24,7 +24,7 @@
"D0 05 0A 09 08 05 2E 44 45 0F 17 16 2B 33\n" \
"D0 05 0A 09 08 05 2E 43 45 0F 16 16 2B 33"

-#define HSD20_IPS "true"
+#define HSD20_IPS 1

/**
* enum st7789v_command - ST7789V display controller commands
--
2.25.1


2020-05-25 18:06:03

by Oliver Graute

[permalink] [raw]
Subject: Re: [PATCH] staging: fbtft: fb_st7789v: make HSD20_IPS numeric and not a string

On 21/05/20, Colin King wrote:
> From: Colin Ian King <[email protected]>
>
> Currently HSD20_IPS is defined as "true" and will always result in a
> non-zero result even if it is defined as "false" because it is an array
> and that will never be zero. Fix this by defining it as an integer 1
> rather than a literal string.
>
> Addessses-Coverity: ("Array compared against 0")
> Fixes: f03c9b788472 ("staging: fbtft: fb_st7789v: Initialize the Display")
> Signed-off-by: Colin Ian King <[email protected]>
> ---
> drivers/staging/fbtft/fb_st7789v.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
> index ebc17e05ecd0..3a280cc1892c 100644
> --- a/drivers/staging/fbtft/fb_st7789v.c
> +++ b/drivers/staging/fbtft/fb_st7789v.c
> @@ -24,7 +24,7 @@
> "D0 05 0A 09 08 05 2E 44 45 0F 17 16 2B 33\n" \
> "D0 05 0A 09 08 05 2E 43 45 0F 16 16 2B 33"
>
> -#define HSD20_IPS "true"
> +#define HSD20_IPS 1
>
> /**
> * enum st7789v_command - ST7789V display controller commands

Acked-by: Oliver Graute <[email protected]>

2020-05-31 21:06:54

by Sam Ravnborg

[permalink] [raw]
Subject: Re: [PATCH] staging: fbtft: fb_st7789v: make HSD20_IPS numeric and not a string

Hi Colin/Greg.

On Thu, May 21, 2020 at 02:50:38PM +0100, Colin King wrote:
> From: Colin Ian King <[email protected]>
>
> Currently HSD20_IPS is defined as "true" and will always result in a
> non-zero result even if it is defined as "false" because it is an array
> and that will never be zero. Fix this by defining it as an integer 1
> rather than a literal string.
>
> Addessses-Coverity: ("Array compared against 0")
> Fixes: f03c9b788472 ("staging: fbtft: fb_st7789v: Initialize the Display")
> Signed-off-by: Colin Ian King <[email protected]>
> ---
> drivers/staging/fbtft/fb_st7789v.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
> index ebc17e05ecd0..3a280cc1892c 100644
> --- a/drivers/staging/fbtft/fb_st7789v.c
> +++ b/drivers/staging/fbtft/fb_st7789v.c
> @@ -24,7 +24,7 @@
> "D0 05 0A 09 08 05 2E 44 45 0F 17 16 2B 33\n" \
> "D0 05 0A 09 08 05 2E 43 45 0F 16 16 2B 33"
>
> -#define HSD20_IPS "true"
> +#define HSD20_IPS 1
>
> /**
> * enum st7789v_command - ST7789V display controller commands

Patch does not apply to drm-misc-next, seems to be a staging thing.
So do not expext the DRM people to pick it up.

Sam

> --
> 2.25.1
>
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