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tty: replace BKL with a new tty_lock

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As a preparation for replacing the big kernel lock
in the TTY layer, wrap all the callers in new
macros tty_lock, tty_lock_nested and tty_unlock.

Signed-off-by: Arnd Bergmann <[email protected]>
Cc: Alan Cox <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Arnd Bergmann 2010-06-01 22:53:01 +02:00 • committed by Greg Kroah-Hartman
commit ec79d6056d
17 changed files with 161 additions and 115 deletions
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4
drivers/video/console/vgacon.c
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@ -1108,7 +1108,7 @@ static int vgacon_do_font_op(struct vgastate *state,char *arg,int set,int ch512)
charmap += 4 * cmapsz;
#endif
unlock_kernel();
tty_unlock();
spin_lock_irq(&vga_lock);
/* First, the Sequencer */
vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x1);
@ -1192,7 +1192,7 @@ static int vgacon_do_font_op(struct vgastate *state,char *arg,int set,int ch512)
vga_wattr(state->vgabase, VGA_AR_ENABLE_DISPLAY, 0);
}
spin_unlock_irq(&vga_lock);
lock_kernel();
tty_lock();
return 0;
}