Subject: + printk-move-braille-console-support-into-separate-braille-files.patch added to -mm tree
To: joe@xxxxxxxxxxx,ming.lei@xxxxxxxxxxxxx,samuel.thibault@xxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 17 Jul 2013 15:29:15 -0700
The patch titled
Subject: printk: move braille console support into separate braille.[ch] files
has been added to the -mm tree. Its filename is
printk-move-braille-console-support-into-separate-braille-files.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/printk-move-braille-console-support-into-separate-braille-files.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/printk-move-braille-console-support-into-separate-braille-files.patch
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------------------------------------------------------
From: Joe Perches <joe@xxxxxxxxxxx>
Subject: printk: move braille console support into separate braille.[ch] files
Create files with prototypes and static inlines for braille support. Make
braille_console functions return 1 on success.
Corrected CONFIG_A11Y_BRAILLE_CONSOLE=n _braille_console_setup
return value to NULL.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Cc: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/accessibility/braille/braille_console.c | 9 ++
kernel/printk/Makefile | 1
kernel/printk/braille.c | 48 ++++++++++++++
kernel/printk/braille.h | 48 ++++++++++++++
kernel/printk/printk.c | 44 +++---------
5 files changed, 117 insertions(+), 33 deletions(-)
diff -puN drivers/accessibility/braille/braille_console.c~printk-move-braille-console-support-into-separate-braille-files drivers/accessibility/braille/braille_console.c
--- a/drivers/accessibility/braille/braille_console.c~printk-move-braille-console-support-into-separate-braille-files
+++ a/drivers/accessibility/braille/braille_console.c
@@ -359,6 +359,9 @@ int braille_register_console(struct cons
char *console_options, char *braille_options)
{
int ret;
+
+ if (!(console->flags & CON_BRL))
+ return 0;
if (!console_options)
/* Only support VisioBraille for now */
console_options = "57600o8";
@@ -374,15 +377,17 @@ int braille_register_console(struct cons
braille_co = console;
register_keyboard_notifier(&keyboard_notifier_block);
register_vt_notifier(&vt_notifier_block);
- return 0;
+ return 1;
}
int braille_unregister_console(struct console *console)
{
if (braille_co != console)
return -EINVAL;
+ if (!(console->flags & CON_BRL))
+ return 0;
unregister_keyboard_notifier(&keyboard_notifier_block);
unregister_vt_notifier(&vt_notifier_block);
braille_co = NULL;
- return 0;
+ return 1;
}
diff -puN kernel/printk/Makefile~printk-move-braille-console-support-into-separate-braille-files kernel/printk/Makefile
--- a/kernel/printk/Makefile~printk-move-braille-console-support-into-separate-braille-files
+++ a/kernel/printk/Makefile
@@ -1 +1,2 @@
obj-y = printk.o
+obj-$(CONFIG_A11Y_BRAILLE_CONSOLE) += braille.o
diff -puN /dev/null kernel/printk/braille.c
--- /dev/null
+++ a/kernel/printk/braille.c
@@ -0,0 +1,48 @@
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/string.h>
+
+#include "console_cmdline.h"
+#include "braille.h"
+
+char *_braille_console_setup(char **str, char **brl_options)
+{
+ if (!memcmp(*str, "brl,", 4)) {
+ *brl_options = "";
+ *str += 4;
+ } else if (!memcmp(str, "brl=", 4)) {
+ *brl_options = *str + 4;
+ *str = strchr(*brl_options, ',');
+ if (!*str)
+ pr_err("need port name after brl=\n");
+ else
+ *((*str)++) = 0;
+ }
+
+ return *str;
+}
+
+int
+_braille_register_console(struct console *console, struct console_cmdline *c)
+{
+ int rtn = 0;
+
+ if (c->brl_options) {
+ console->flags |= CON_BRL;
+ rtn = braille_register_console(console, c->index, c->options,
+ c->brl_options);
+ }
+
+ return rtn;
+}
+
+int
+_braille_unregister_console(struct console *console)
+{
+ if (console->flags & CON_BRL)
+ return braille_unregister_console(console);
+
+ return 0;
+}
diff -puN /dev/null kernel/printk/braille.h
--- /dev/null
+++ a/kernel/printk/braille.h
@@ -0,0 +1,48 @@
+#ifndef _PRINTK_BRAILLE_H
+#define _PRINTK_BRAILLE_H
+
+#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
+
+static inline void
+braille_set_options(struct console_cmdline *c, char *brl_options)
+{
+ c->brl_options = brl_options;
+}
+
+char *
+_braille_console_setup(char **str, char **brl_options);
+
+int
+_braille_register_console(struct console *console, struct console_cmdline *c);
+
+int
+_braille_unregister_console(struct console *console);
+
+#else
+
+static inline void
+braille_set_options(struct console_cmdline *c, char *brl_options)
+{
+}
+
+static inline char *
+_braille_console_setup(char **str, char **brl_options)
+{
+ return NULL;
+}
+
+static inline int
+_braille_register_console(struct console *console, struct console_cmdline *c)
+{
+ return 0;
+}
+
+static inline int
+_braille_unregister_console(struct console *console)
+{
+ return 0;
+}
+
+#endif
+
+#endif
diff -puN kernel/printk/printk.c~printk-move-braille-console-support-into-separate-braille-files kernel/printk/printk.c
--- a/kernel/printk/printk.c~printk-move-braille-console-support-into-separate-braille-files
+++ a/kernel/printk/printk.c
@@ -50,6 +50,7 @@
#include <trace/events/printk.h>
#include "console_cmdline.h"
+#include "braille.h"
/* printk's without a loglevel use this.. */
#define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL
@@ -1768,9 +1769,8 @@ static int __add_preferred_console(char
c = &console_cmdline[i];
strlcpy(c->name, name, sizeof(c->name));
c->options = options;
-#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
- c->brl_options = brl_options;
-#endif
+ braille_set_options(c, brl_options);
+
c->index = idx;
return 0;
}
@@ -1783,20 +1783,8 @@ static int __init console_setup(char *st
char *s, *options, *brl_options = NULL;
int idx;
-#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
- if (!memcmp(str, "brl,", 4)) {
- brl_options = "";
- str += 4;
- } else if (!memcmp(str, "brl=", 4)) {
- brl_options = str + 4;
- str = strchr(brl_options, ',');
- if (!str) {
- printk(KERN_ERR "need port name after brl=\n");
- return 1;
- }
- *(str++) = 0;
- }
-#endif
+ if (_braille_console_setup(&str, &brl_options))
+ return 1;
/*
* Decode str into name, index, options.
@@ -2290,16 +2278,10 @@ void register_console(struct console *ne
continue;
if (newcon->index < 0)
newcon->index = console_cmdline[i].index;
-#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
- if (console_cmdline[i].brl_options) {
- newcon->flags |= CON_BRL;
- braille_register_console(newcon,
- console_cmdline[i].index,
- console_cmdline[i].options,
- console_cmdline[i].brl_options);
+
+ if (_braille_register_console(newcon, &console_cmdline[i]))
return;
- }
-#endif
+
if (newcon->setup &&
newcon->setup(newcon, console_cmdline[i].options) != 0)
break;
@@ -2387,13 +2369,13 @@ EXPORT_SYMBOL(register_console);
int unregister_console(struct console *console)
{
struct console *a, *b;
- int res = 1;
+ int res;
-#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
- if (console->flags & CON_BRL)
- return braille_unregister_console(console);
-#endif
+ res = _braille_unregister_console(console);
+ if (res)
+ return res;
+ res = 1;
console_lock();
if (console_drivers == console) {
console_drivers=console->next;
_
Patches currently in -mm which might be from joe@xxxxxxxxxxx are
linux-next.patch
maintainers-dynamic-debug-jasons-not-there.patch
printk-move-to-separate-directory-for-easier-modification.patch
printk-add-console_cmdlineh.patch
printk-move-braille-console-support-into-separate-braille-files.patch
printk-use-pointer-for-console_cmdline-indexing.patch
printk-rename-struct-log-to-struct-printk_log.patch
firmware-dmi_scan-drop-obsolete-comment.patch
firmware-dmi_scan-fix-most-checkpatch-errors-and-warnings.patch
firmware-dmi_scan-constify-strings.patch
firmware-dmi_scan-drop-oom-messages.patch
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