diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/serio/i8042.c | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 8f5b123e2eb..5900de3c3f4 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -698,6 +698,26 @@ static void i8042_timer_func(unsigned long data) i8042_interrupt(0, NULL, NULL); } +static int i8042_ctl_test(void) +{ + unsigned char param; + + if (!i8042_reset) + return 0; + + if (i8042_command(¶m, I8042_CMD_CTL_TEST)) { + printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n"); + return -1; + } + + if (param != I8042_RET_CTL_TEST) { + printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n", + param, I8042_RET_CTL_TEST); + return -1; + } + + return 0; +} /* * i8042_controller init initializes the i8042 controller, and, @@ -719,21 +739,8 @@ static int i8042_controller_init(void) return -1; } - if (i8042_reset) { - - unsigned char param; - - if (i8042_command(¶m, I8042_CMD_CTL_TEST)) { - printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n"); - return -1; - } - - if (param != I8042_RET_CTL_TEST) { - printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n", - param, I8042_RET_CTL_TEST); - return -1; - } - } + if (i8042_ctl_test()) + return -1; /* * Save the CTR for restoral on unload / reboot. @@ -806,9 +813,7 @@ static void i8042_controller_reset(void) * Reset the controller if requested. */ - if (i8042_reset) - if (i8042_command(¶m, I8042_CMD_CTL_TEST)) - printk(KERN_ERR "i8042.c: i8042 controller reset timeout.\n"); + i8042_ctl_test(); /* * Disable MUX mode if present. @@ -920,8 +925,11 @@ static int i8042_resume(struct device *dev, u32 level) if (level != RESUME_ENABLE) return 0; - if (i8042_controller_init()) { - printk(KERN_ERR "i8042: resume failed\n"); + if (i8042_ctl_test()) + return -1; + + if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) { + printk(KERN_ERR "i8042: Can't write CTR\n"); return -1; } |