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-rw-r--r--drivers/input/serio/i8042.c48
1 files changed, 28 insertions, 20 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 8f5b123e2ebc..5900de3c3f4f 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)
698 i8042_interrupt(0, NULL, NULL); 698 i8042_interrupt(0, NULL, NULL);
699} 699}
700 700
701static int i8042_ctl_test(void)
702{
703 unsigned char param;
704
705 if (!i8042_reset)
706 return 0;
707
708 if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
709 printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
710 return -1;
711 }
712
713 if (param != I8042_RET_CTL_TEST) {
714 printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n",
715 param, I8042_RET_CTL_TEST);
716 return -1;
717 }
718
719 return 0;
720}
701 721
702/* 722/*
703 * i8042_controller init initializes the i8042 controller, and, 723 * i8042_controller init initializes the i8042 controller, and,
@@ -719,21 +739,8 @@ static int i8042_controller_init(void)
719 return -1; 739 return -1;
720 } 740 }
721 741
722 if (i8042_reset) { 742 if (i8042_ctl_test())
723 743 return -1;
724 unsigned char param;
725
726 if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
727 printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
728 return -1;
729 }
730
731 if (param != I8042_RET_CTL_TEST) {
732 printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n",
733 param, I8042_RET_CTL_TEST);
734 return -1;
735 }
736 }
737 744
738/* 745/*
739 * Save the CTR for restoral on unload / reboot. 746 * Save the CTR for restoral on unload / reboot.
@@ -806,9 +813,7 @@ static void i8042_controller_reset(void)
806 * Reset the controller if requested. 813 * Reset the controller if requested.
807 */ 814 */
808 815
809 if (i8042_reset) 816 i8042_ctl_test();
810 if (i8042_command(&param, I8042_CMD_CTL_TEST))
811 printk(KERN_ERR "i8042.c: i8042 controller reset timeout.\n");
812 817
813/* 818/*
814 * Disable MUX mode if present. 819 * Disable MUX mode if present.
@@ -920,8 +925,11 @@ static int i8042_resume(struct device *dev, u32 level)
920 if (level != RESUME_ENABLE) 925 if (level != RESUME_ENABLE)
921 return 0; 926 return 0;
922 927
923 if (i8042_controller_init()) { 928 if (i8042_ctl_test())
924 printk(KERN_ERR "i8042: resume failed\n"); 929 return -1;
930
931 if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
932 printk(KERN_ERR "i8042: Can't write CTR\n");
925 return -1; 933 return -1;
926 } 934 }
927 935