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authorPaul Gortmaker <paul.gortmaker@windriver.com>2012-05-18 01:06:13 +0200
committerPaul Gortmaker <paul.gortmaker@windriver.com>2012-05-18 01:06:13 +0200
commitbb8187d35f820671d6dd76700d77a6b55f95e2c5 (patch)
treeb699b184860cc7e9f2732c73d61ea92e3e2ad9e4 /arch/x86/kernel/time.c
parentscsi: delete the MCA specific drivers and driver code (diff)
downloadlinux-bb8187d35f820671d6dd76700d77a6b55f95e2c5.tar.xz
linux-bb8187d35f820671d6dd76700d77a6b55f95e2c5.zip
MCA: delete all remaining traces of microchannel bus support.
Hardware with MCA bus is limited to 386 and 486 class machines that are now 20+ years old and typically with less than 32MB of memory. A quick search on the internet, and you see that even the MCA hobbyist/enthusiast community has lost interest in the early 2000 era and never really even moved ahead from the 2.4 kernels to the 2.6 series. This deletes anything remaining related to CONFIG_MCA from core kernel code and from the x86 architecture. There is no point in carrying this any further into the future. One complication to watch for is inadvertently scooping up stuff relating to machine check, since there is overlap in the TLA name space (e.g. arch/x86/boot/mca.c). Cc: Thomas Gleixner <tglx@linutronix.de> Cc: James Bottomley <JBottomley@Parallels.com> Cc: x86@kernel.org Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'arch/x86/kernel/time.c')
-rw-r--r--arch/x86/kernel/time.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index c6eba2b42673..24d3c91e9812 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -14,7 +14,6 @@
#include <linux/i8253.h>
#include <linux/time.h>
#include <linux/export.h>
-#include <linux/mca.h>
#include <asm/vsyscall.h>
#include <asm/x86_init.h>
@@ -58,11 +57,6 @@ EXPORT_SYMBOL(profile_pc);
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
global_clock_event->event_handler(global_clock_event);
-
- /* MCA bus quirk: Acknowledge irq0 by setting bit 7 in port 0x61 */
- if (MCA_bus)
- outb_p(inb_p(0x61)| 0x80, 0x61);
-
return IRQ_HANDLED;
}