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author | Andreas Deresch <aderesch@fs.tum.de> | 2006-02-26 04:18:34 +0100 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-26 09:53:30 -0800 |
commit | 6070f9ec6b03cc46cd0242523326f7a296f47c1c (patch) | |
tree | ba976c8458cfc2429d32883141170bbc4dfd5049 /arch/i386/kernel/mpparse.c | |
parent | 13a229abc25640813f1480c0478dfc6bdbc1c19e (diff) | |
download | kernel_samsung_espresso10-6070f9ec6b03cc46cd0242523326f7a296f47c1c.zip kernel_samsung_espresso10-6070f9ec6b03cc46cd0242523326f7a296f47c1c.tar.gz kernel_samsung_espresso10-6070f9ec6b03cc46cd0242523326f7a296f47c1c.tar.bz2 |
[PATCH] i386: Handle non existing APICs without panicing
[description from AK]
This fixes booting in APIC mode on some ACER laptops. x86-64
did a similar change some time ago.
See http://bugzilla.kernel.org/show_bug.cgi?id=4700 for details
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/mpparse.c')
-rw-r--r-- | arch/i386/kernel/mpparse.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index e7609ab..e6e2f43 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -915,6 +915,7 @@ void __init mp_register_ioapic ( u32 gsi_base) { int idx = 0; + int tmpid; if (nr_ioapics >= MAX_IO_APICS) { printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded " @@ -935,9 +936,14 @@ void __init mp_register_ioapic ( set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15)) - mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id); + tmpid = io_apic_get_unique_id(idx, id); else - mp_ioapics[idx].mpc_apicid = id; + tmpid = id; + if (tmpid == -1) { + nr_ioapics--; + return; + } + mp_ioapics[idx].mpc_apicid = tmpid; mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx); /* |