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13b7ea6377
linux/arch/mips
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Markos Chandras 13b7ea6377 MIPS: malta: Fix GIC interrupt offsets 
The GIC interrupt offsets are calculated based on the value of NR_CPUS.
However, this is wrong because NR_CPUS may or may not contain the real
number of the actual cpus present in the system. We fix that by using
the 'nr_cpu_ids' variable which contains the real number of cpus in
the system. Previously, an MT core (eg with 8 VPEs) will fail to boot if
NR_CPUS was > 8 with the following errors:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/irq/chip.c:670 __irq_set_handler+0x15c/0x164()
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W    3.12.0-rc5-00087-gced5633 5
Stack : 00000006 00000004 00000000 00000000 00000000 00000000 807a4f36 00000053
          807a0000 00000000 80173218 80565aa8 00000000 00000000 00000000 0000000
          00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000
          00000000 00000000 00000000 8054fd00 8054fd94 80500514 805657a7 8016eb4
          807a0000 80500514 00000000 00000000 80565aa8 8079a5d8 80565766 8054fd0
          ...
Call Trace:
[<801098c0>] show_stack+0x64/0x7c
[<8049c6b0>] dump_stack+0x64/0x84
[<8012efc4>] warn_slowpath_common+0x84/0xb4
[<8012f00c>] warn_slowpath_null+0x18/0x24
[<80173218>] __irq_set_handler+0x15c/0x164
[<80587cf4>] arch_init_ipiirq+0x2c/0x3c
[<805880c8>] arch_init_irq+0x3c4/0x4bc
[<80588e28>] init_IRQ+0x3c/0x50
[<805847e8>] start_kernel+0x230/0x3d8

---[ end trace 4eaa2a86a8e2da26 ]---

This is now fixed and the Malta board can boot with any NR_CPUS value
which also helps supporting more processors in a single kernel binary.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6091/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-10-30 15:43:18 +01:00
..
alchemy MIPS: Alchemy: MTX-1: fix incorrect placement of __initdata tag 2013-09-30 15:14:07 +02:00
ar7 MIPS: FW: Remove obsolete header file for MTI platforms. 2013-05-08 12:30:10 +02:00
ath79 MIPS: ath79: Switch to the clkdev framework 2013-09-03 23:22:18 +02:00
bcm47xx MIPS: Set default CPU type for BCM47XX platforms 2013-07-30 18:48:50 +02:00
bcm63xx MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
boot MIPS: Fix invalid symbolic link file 2013-09-19 17:04:35 +02:00
cavium-octeon MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
cobalt MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
configs MIPS: Lantiq: Add defconfig for xway SoC 2013-09-03 23:22:16 +02:00
dec MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
emma MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
fw MIPS: sibyte: Declare the cfe_write() buffer as constant 2013-06-21 18:07:02 +02:00
include compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
jazz Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
jz4740 MIPS: jz4740: Correct clock gate bit for DMA controller 2013-07-05 11:40:53 +05:30
kernel MIPS: Perf: Fix 74K cache map 2013-10-29 21:18:23 +01:00
kvm Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-09-04 18:15:06 -07:00
lantiq MIPS: Lantiq: Falcon: fix asc clock definition 2013-09-03 23:22:16 +02:00
lasat MIPS: Refactor load/entry address calculations 2013-09-03 17:58:37 +02:00
lib MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
loongson MIPS: Loongson: Hide the pci code behind CONFIG_PCI 2013-09-03 15:27:39 +02:00
loongson1 MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
math-emu MIPS: Remove unreachable break statements from cp1emu.c 2013-08-26 15:33:40 +02:00
mm MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches 2013-10-02 10:58:50 +02:00
mti-malta MIPS: malta: Fix GIC interrupt offsets 2013-10-30 15:43:18 +01:00
mti-sead3 MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
netlogic MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
oprofile MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
pci MIPS: PCI: pci-bcm1480: Include missing vt.h header 2013-09-19 12:50:16 +02:00
pmcs-msp71xx MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
pnx833x MIPS: PNX833x: PNX8335_PCI_ETHERNET_INT depends on CONFIG_SOC_PNX8335 2013-08-05 13:34:22 +02:00
power MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
powertv MIPS: powertv: Drop BOOTLOADER_DRIVER Kconfig symbol 2013-09-03 16:48:37 +02:00
ralink MIPS: Add driver for the built-in PCI controller of the RT3883 SoC 2013-09-04 19:17:21 +02:00
rb532 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip22 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip27 MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
sgi-ip32 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sibyte MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
sni MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
txx9 MIPS: TXx9: Fix build error if CONFIG_TOSHIBA_JMR3927 is not selected 2013-09-03 15:30:50 +02:00
vr41xx MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
Kbuild KVM/MIPS32: Infrastructure/build files. 2013-05-08 03:55:34 +02:00
Kbuild.platforms MIPS: Delete Wind River ppmc eval board support. 2013-07-01 15:10:53 +02:00
Kconfig Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
Kconfig.debug consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Makefile MIPS: Remove useless comment about kprobe from arch/mips/Makefile 2013-09-18 18:37:48 +02:00