busybox: Fix excluding .debug from depmod

The previously added patch for excluding .debug from depmod has an
invalid expression in the condition. The strstr function returns
NULL if substring is NOT found [1]. Therefore, the existing patch,
on the opposite, handles only modules that have a .debug substring
in the path. This commit fixes the condition in the patch to the
correct one.

[1]: https://man7.org/linux/man-pages/man3/strstr.3.html

Signed-off-by: Anton Kikin <a.kikin@tano-systems.com>
---
 .../busybox/0001-depmod-Ignore-.debug-directories.patch    | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Hello,

Saul sent this on Friday:
https://lore.kernel.org/openembedded-core/20230210153255.2716448-1-saul.wold@windriver.com/

On 14/02/2023 16:17:34+0300, Anton Kikin wrote:
> The previously added patch for excluding .debug from depmod has an
> invalid expression in the condition. The strstr function returns
> NULL if substring is NOT found [1]. Therefore, the existing patch,
> on the opposite, handles only modules that have a .debug substring
> in the path. This commit fixes the condition in the patch to the
> correct one.
> 
> [1]: https://man7.org/linux/man-pages/man3/strstr.3.html
> 
> Signed-off-by: Anton Kikin <a.kikin@tano-systems.com>
> ---
>  .../busybox/0001-depmod-Ignore-.debug-directories.patch    | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/meta/recipes-core/busybox/busybox/0001-depmod-Ignore-.debug-directories.patch b/meta/recipes-core/busybox/busybox/0001-depmod-Ignore-.debug-directories.patch
> index 354f83a4a5..3398a354c5 100644
> --- a/meta/recipes-core/busybox/busybox/0001-depmod-Ignore-.debug-directories.patch
> +++ b/meta/recipes-core/busybox/busybox/0001-depmod-Ignore-.debug-directories.patch
> @@ -1,6 +1,6 @@
>  From 5f6ed003f10ee0bd4a508d5f59129a29f0920dfc Mon Sep 17 00:00:00 2001
> -From: Saul Wold <saul.wold@windriver.com>
> -Date: Thu, 31 Mar 2022 11:21:45 -0700
> +From: Anton Kikin <a.kikin@tano-systems.com>
> +Date: Tue, 14 Feb 2023 15:46:42 +0300
>  Subject: [PATCH] depmod: Ignore .debug directories
>  
>  The .debug/<module>.ko files do not have the correct symbol information
> @@ -9,6 +9,7 @@ since it's split away from the actual <module>.ko file. Just ignore it.
>  Upstream-Status: Pending
>  
>  Signed-off-by: Saul Wold <saul.wold@windriver.com>
> +Signed-off-by: Anton Kikin <a.kikin@tano-systems.com>
>  ---
>   modutils/depmod.c | 3 +++
>   1 file changed, 3 insertions(+)
> @@ -21,7 +22,7 @@ index bb42bbe..aa5a2de 100644
>   	/* Arbitrary. Was sb->st_size, but that breaks .gz etc */
>   	size_t len = (64*1024*1024 - 4096);
>   
> -+	if (strstr(fname, ".debug") == NULL)
> ++	if (strstr(fname, ".debug"))
>  +		return TRUE;
>  +
>   	if (strrstr(fname, ".ko") == NULL)
> -- 
> 2.34.1.windows.1
> 

> 
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