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-rw-r--r--drivers/input/i8042.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/input/i8042.c b/drivers/input/i8042.c
index 83b1bf4..c3bc536 100644
--- a/drivers/input/i8042.c
+++ b/drivers/input/i8042.c
@@ -313,6 +313,13 @@ static unsigned char ext_key_map[] = {
0x00 /* map end */
};
+/******************************************************************************/
+
+static int kbd_controller_present(void)
+{
+ return in8(I8042_STATUS_REG) != 0xff;
+}
+
/*******************************************************************************
*
* i8042_kbd_init - reset keyboard and init state flags
@@ -322,6 +329,9 @@ int i8042_kbd_init(void)
int keymap, try;
char *penv;
+ if (!kbd_controller_present())
+ return -1;
+
#ifdef CONFIG_USE_CPCIDVI
penv = getenv("console");
if (penv != NULL) {
@@ -603,7 +613,7 @@ static int kbd_input_empty(void)
while ((in8(I8042_STATUS_REG) & 0x02) && kbdTimeout--)
udelay(1000);
- return kbdTimeout;
+ return kbdTimeout != -1;
}
/******************************************************************************/