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SubjectStarting with kernel 3.0, Acer Aspire One A110 hangs on reboot
Hello,

Starting with kernel 3.0, my Acer Aspire One A110 hangs on reboot. Doing
an internet search, I found that in git commit
b49c78d4827be8d7e67e5b94adac6b30a4a9ad14 x86, reboot: Acer Aspire One
A110 reboot quirk

the machine was made to reboot with the bios method. Well, it doesn't
work here. I reverted that commit and found out that only the kbd method
(reboot=k) works. So what I did is create a new quirks section for
machines that only reboot with the kbd method and put the Aspire One
into it.

No idea if this is the correct solution, all I know is my Aspire One now
reboots again.


Signed-off-by: Uroš Vampl <mobile.leecher@gmail.com>

--- linux-3.0.1.orig/arch/x86/kernel/reboot.c 2011-08-05 06:59:21.000000000 +0200
+++ linux-3.0.1/arch/x86/kernel/reboot.c 2011-08-12 02:48:11.608815724 +0200
@@ -294,8 +294,32 @@
DMI_MATCH(DMI_BOARD_NAME, "VersaLogic Menlow board"),
},
},
+ { }
+};
+
+static int __init reboot_init(void)
+{
+ dmi_check_system(reboot_dmi_table);
+ return 0;
+}
+core_initcall(reboot_init);
+
+/*
+ * Some machines require the "reboot=k" commandline option,
+ * this quirk makes that automatic.
+ */
+static int __init set_kbd_reboot(const struct dmi_system_id *d)
+{
+ if (reboot_type != BOOT_KBD) {
+ reboot_type = BOOT_KBD;
+ printk(KERN_INFO "%s series board detected. Selecting KBD-method for reboots.\n", d->ident);
+ }
+ return 0;
+}
+
+static struct dmi_system_id __initdata kbd_reboot_dmi_table[] = {
{ /* Handle reboot issue on Acer Aspire one */
- .callback = set_bios_reboot,
+ .callback = set_kbd_reboot,
.ident = "Acer Aspire One A110",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
@@ -305,12 +329,12 @@
{ }
};

-static int __init reboot_init(void)
+static int __init kbd_reboot_init(void)
{
- dmi_check_system(reboot_dmi_table);
+ dmi_check_system(kbd_reboot_dmi_table);
return 0;
}
-core_initcall(reboot_init);
+core_initcall(kbd_reboot_init);

extern const unsigned char machine_real_restart_asm[];
extern const u64 machine_real_restart_gdt[3];
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