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vc: Locking clean up

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The virtual console layer uses the BKL for various things that don't really
need it. Clean them out.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2010-06-01 22:52:54 +02:00 committed by Greg Kroah-Hartman
parent d87d9b7d19
commit e33ac1c10b
2 changed files with 8 additions and 3 deletions
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4
drivers/char/selection.c
View File

@ -26,6 +26,7 @@
#include <linux/selection.h>
#include <linux/tiocl.h>
#include <linux/console.h>
#include <linux/smp_lock.h>
/* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */
#define isspace(c) ((c) == ' ')
@ -312,6 +313,8 @@ int paste_selection(struct tty_struct *tty)
struct tty_ldisc *ld;
DECLARE_WAITQUEUE(wait, current);
lock_kernel();
acquire_console_sem();
poke_blanked_console();
release_console_sem();
@ -335,5 +338,6 @@ int paste_selection(struct tty_struct *tty)
__set_current_state(TASK_RUNNING);
tty_ldisc_deref(ld);
unlock_kernel();
return 0;
}

7
drivers/char/vt.c
View File

@ -287,8 +287,12 @@ static inline unsigned short *screenpos(struct vc_data *vc, int offset, int view
return p;
}
/* Called from the keyboard irq path.. */
static inline void scrolldelta(int lines)
{
/* FIXME */
/* scrolldelta needs some kind of consistency lock, but the BKL was
and still is not protecting versus the scheduled back end */
scrollback_delta += lines;
schedule_console_callback();
}
@ -2616,8 +2620,6 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
return -EFAULT;
ret = 0;
lock_kernel();
switch (type)
{
case TIOCL_SETSEL:
@ -2692,7 +2694,6 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
ret = -EINVAL;
break;
}
unlock_kernel();
return ret;
}