* [PATCH v3] mdacon: fix redefinition of 'scr_memsetw'
@ 2021-09-15 1:13 Jackie Liu
2021-09-22 2:29 ` Jackie Liu
0 siblings, 1 reply; 2+ messages in thread
From: Jackie Liu @ 2021-09-15 1:13 UTC (permalink / raw)
To: dri-devel; +Cc: gregkh, linux-kernel, liu.yun
From: Jackie Liu <liuyun01@kylinos.cn>
CONFIG_VGA_CONSOLE=n and CONFIG_MDA_CONSOLE=n will cause vt_buffer.h not
include <asm/vga.h>.
But if we set CONFIG_MDA_CONSOLE=m, mdacon.c include <linux/vt_buffer.h>
is in front of include <asm/vga.h>. VT_BUF_HAVE_MEMSETW is not defined,
so vt_buffer.h will define a scr_memsetw, after that, vga.h also define
a scr_memsetw, so the repeated definition of scr_memsetw appears, builds
error.
We only need to make vt_buffer.h also contain vga.h when
CONFIG_MDA_CONSOLE=m. This problem can be fixed.
BTW, mdacon.c no need to include vga.h forcibly, let vt_buffer.h do it.
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Fixes: ac036f9570a2 ("vga: optimise console scrolling")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
---
drivers/video/console/mdacon.c | 1 -
include/linux/vt_buffer.h | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c
index ef29b321967f..5898d01bc492 100644
--- a/drivers/video/console/mdacon.c
+++ b/drivers/video/console/mdacon.c
@@ -42,7 +42,6 @@
#include <linux/init.h>
#include <asm/io.h>
-#include <asm/vga.h>
static DEFINE_SPINLOCK(mda_lock);
diff --git a/include/linux/vt_buffer.h b/include/linux/vt_buffer.h
index 848db1b1569f..3a79cc27a33b 100644
--- a/include/linux/vt_buffer.h
+++ b/include/linux/vt_buffer.h
@@ -16,7 +16,7 @@
#include <linux/string.h>
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
+#if defined(CONFIG_VGA_CONSOLE) || IS_ENABLED(CONFIG_MDA_CONSOLE)
#include <asm/vga.h>
#endif
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v3] mdacon: fix redefinition of 'scr_memsetw'
2021-09-15 1:13 [PATCH v3] mdacon: fix redefinition of 'scr_memsetw' Jackie Liu
@ 2021-09-22 2:29 ` Jackie Liu
0 siblings, 0 replies; 2+ messages in thread
From: Jackie Liu @ 2021-09-22 2:29 UTC (permalink / raw)
To: dri-devel; +Cc: gregkh, linux-kernel
ping, would anyone take this patch?
在 2021/9/15 上午9:13, Jackie Liu 写道:
> From: Jackie Liu <liuyun01@kylinos.cn>
>
> CONFIG_VGA_CONSOLE=n and CONFIG_MDA_CONSOLE=n will cause vt_buffer.h not
> include <asm/vga.h>.
>
> But if we set CONFIG_MDA_CONSOLE=m, mdacon.c include <linux/vt_buffer.h>
> is in front of include <asm/vga.h>. VT_BUF_HAVE_MEMSETW is not defined,
> so vt_buffer.h will define a scr_memsetw, after that, vga.h also define
> a scr_memsetw, so the repeated definition of scr_memsetw appears, builds
> error.
>
> We only need to make vt_buffer.h also contain vga.h when
> CONFIG_MDA_CONSOLE=m. This problem can be fixed.
>
> BTW, mdacon.c no need to include vga.h forcibly, let vt_buffer.h do it.
>
> Cc: linux-fbdev@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: dri-devel@lists.freedesktop.org
> Fixes: ac036f9570a2 ("vga: optimise console scrolling")
> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
> ---
> drivers/video/console/mdacon.c | 1 -
> include/linux/vt_buffer.h | 2 +-
> 2 files changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c
> index ef29b321967f..5898d01bc492 100644
> --- a/drivers/video/console/mdacon.c
> +++ b/drivers/video/console/mdacon.c
> @@ -42,7 +42,6 @@
> #include <linux/init.h>
>
> #include <asm/io.h>
> -#include <asm/vga.h>
>
> static DEFINE_SPINLOCK(mda_lock);
>
> diff --git a/include/linux/vt_buffer.h b/include/linux/vt_buffer.h
> index 848db1b1569f..3a79cc27a33b 100644
> --- a/include/linux/vt_buffer.h
> +++ b/include/linux/vt_buffer.h
> @@ -16,7 +16,7 @@
>
> #include <linux/string.h>
>
> -#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
> +#if defined(CONFIG_VGA_CONSOLE) || IS_ENABLED(CONFIG_MDA_CONSOLE)
> #include <asm/vga.h>
> #endif
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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