[Buildroot] [PATCH] linux: handle read-only dts files

[Yann E. MORIN]

Hollis, All,

On 2015-08-11 17:11 -0700, Hollis Blanchard spake thusly:
> Some fine version control systems make all files read-only. The custom DTS file
> may therefore be read-only, and that permission is preserved when copying into
> the Linux build directory. A subsequent rebuild tries to 'cp' again, which
> fails with a "Permission denied" error unless the -f option is used.
> 
> Signed-off-by: Hollis Blanchard <hollis_blanchard at mentor.com>

Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>

Regards,
Yann E. MORIN.

> ---
>  linux/linux.mk | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/linux/linux.mk b/linux/linux.mk
> index 375a9e1..a4c4733 100644
> --- a/linux/linux.mk
> +++ b/linux/linux.mk
> @@ -270,7 +270,7 @@ endif
>  # configuration has changed.
>  define LINUX_BUILD_CMDS
>  	$(if $(BR2_LINUX_KERNEL_USE_CUSTOM_DTS),
> -		cp $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DTS_PATH)) $(KERNEL_ARCH_PATH)/boot/dts/)
> +		cp -f $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DTS_PATH)) $(KERNEL_ARCH_PATH)/boot/dts/)
>  	$(LINUX_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_TARGET_NAME)
>  	@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then 	\
>  		$(LINUX_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) modules ;	\
> -- 
> 2.3.2
> 
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