Merge branch 'next' into for-linus

2 files changed, 57 insertions, 8 deletions

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 83ed2d56b924..fb8a3cd3ffd0 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -377,6 +377,24 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
         { }
 };
 
+static struct dmi_system_id __initdata i8042_dmi_reset_table[] = {
+        {
+                .ident = "MSI Wind U-100",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_NAME, "U-100"),
+                        DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
+                },
+        },
+        {
+                .ident = "LG Electronics X110",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_NAME, "X110"),
+                        DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."),
+                },
+        },
+        { }
+};
+
 #ifdef CONFIG_PNP
 static struct dmi_system_id __initdata i8042_dmi_nopnp_table[] = {
         {
@@ -386,6 +404,13 @@ static struct dmi_system_id __initdata i8042_dmi_nopnp_table[] = {
                         DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
                 },
         },
+        {
+                .ident = "MSI Wind U-100",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_NAME, "U-100"),
+                        DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
+                },
+        },
         { }
 };
 #endif
@@ -698,6 +723,9 @@ static int __init i8042_platform_init(void)
 #endif
 
 #ifdef CONFIG_X86
+        if (dmi_check_system(i8042_dmi_reset_table))
+                i8042_reset = 1;
+
         if (dmi_check_system(i8042_dmi_noloop_table))
                 i8042_noloop = 1;
 
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 170f71ee5772..3cffb704e374 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -712,22 +712,43 @@ static int i8042_controller_check(void)
 static int i8042_controller_selftest(void)
 {
         unsigned char param;
+        int i = 0;
 
         if (!i8042_reset)
                 return 0;
 
-        if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
-                printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
-                return -ENODEV;
-        }
+        /*
+         * We try this 5 times; on some really fragile systems this does not
+         * take the first time...
+         */
+        do {
+
+                if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
+                        printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
+                        return -ENODEV;
+                }
+
+                if (param == I8042_RET_CTL_TEST)
+                        return 0;
 
-        if (param != I8042_RET_CTL_TEST) {
                 printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n",
-                         param, I8042_RET_CTL_TEST);
-                return -EIO;
-        }
+                        param, I8042_RET_CTL_TEST);
+                msleep(50);
+        } while (i++ < 5);
 
+#ifdef CONFIG_X86
+        /*
+         * On x86, we don't fail entire i8042 initialization if controller
+         * reset fails in hopes that keyboard port will still be functional
+         * and user will still get a working keyboard. This is especially
+         * important on netbooks. On other arches we trust hardware more.
+         */
+        printk(KERN_INFO
+                "i8042: giving up on controller selftest, continuing anyway...\n");
         return 0;
+#else
+        return -EIO;
+#endif
 }
 
 /*