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Fix bug in at_keyboard which blocked the menu countdown.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-12-09 21:47:58 +01:00
parent 02772f981b
commit 8f44a91ea9
1 changed files with 18 additions and 2 deletions
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20
term/at_keyboard.c
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@ -24,6 +24,7 @@
#include <grub/term.h>
static short at_keyboard_status = 0;
static int pending_key = -1;
#define KEYBOARD_STATUS_SHIFT_L (1 << 0)
#define KEYBOARD_STATUS_SHIFT_R (1 << 1)
@ -192,14 +193,27 @@ grub_at_keyboard_getkey_noblock (void)
static int
grub_at_keyboard_checkkey (void)
{
/* FIXME: this will be triggered by BREAK events. */
return KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)) ? 1 : -1;
if (pending_key != -1)
return 1;
pending_key = grub_at_keyboard_getkey_noblock ();
if (pending_key != -1)
return 1;
return -1;
}
static int
grub_at_keyboard_getkey (void)
{
int key;
if (pending_key != -1)
{
key = pending_key;
pending_key = -1;
return key;
}
do
{
key = grub_at_keyboard_getkey_noblock ();
@ -210,6 +224,8 @@ grub_at_keyboard_getkey (void)
static grub_err_t
grub_keyboard_controller_init (void)
{
pending_key = -1;
at_keyboard_status = 0;
grub_keyboard_controller_orig = grub_keyboard_controller_read ();
grub_keyboard_controller_write (grub_keyboard_controller_orig | KEYBOARD_SCANCODE_SET1);
return GRUB_ERR_NONE;