Matt Redfearn 9eec1c01a0 MIPS: Malta: Fix i8259 irqchip setup ... Since commit 4cfffcfa51 ("irqchip/mips-gic: Fix local interrupts"), the gic driver has been allocating virq's for local interrupts during its initialisation. Unfortunately on Malta platforms, these are the first IRQs to be allocated and so are allocated virqs 1-3. The i8259 driver uses a legacy irq domain which expects to map virqs 0-15. Probing of that driver therefore fails because some of those virqs are already taken, with the warning: WARNING: CPU: 0 PID: 0 at kernel/irq/irqdomain.c:344 irq_domain_associate+0x1e8/0x228 error: virq1 is already associated Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.10.0-rc6-00011-g4cfffcfa5106 #368 Stack : 00000000 00000000 807ae03a 0000004d 00000000 806c1010 0000000b ffff0a01 80725467 807258f4 806a64a4 00000000 00000000 807a9acc 00000100 80713e68 806d5598 8017593c 8072bf90 8072bf94 806ac358 00000000 806abb60 80713ce4 00000100 801b22d4 806d5598 8017593c 807ae03a 00000000 80713ce4 80720000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ... Call Trace: [<8010c480>] show_stack+0x88/0xa4 [<80376758>] dump_stack+0x88/0xd0 [<8012c4a8>] __warn+0x104/0x118 [<8012c4ec>] warn_slowpath_fmt+0x30/0x3c [<8017edfc>] irq_domain_associate+0x1e8/0x228 [<8017efd0>] irq_domain_add_legacy+0x7c/0xb0 [<80764c50>] __init_i8259_irqs+0x64/0xa0 [<80764ca4>] i8259_of_init+0x18/0x74 [<8076ddc0>] of_irq_init+0x19c/0x310 [<80752dd8>] arch_init_irq+0x28/0x19c [<80750a08>] start_kernel+0x2a8/0x434 Fix this by reserving the required i8259 virqs in malta platform code before probing any irq chips. Fixes: 4cfffcfa51 ("irqchip/mips-gic: Fix local interrupts") Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/15919/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2017-04-10 12:02:42 +02:00
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Makefile	MIPS: Malta: Setup RAM regions via DT	2015-11-11 08:35:47 +01:00
malta-amon.c
malta-display.c
malta-dt.c	MIPS: Malta: Remove custom DT match table	2016-10-06 17:31:01 +02:00
malta-dtshim.c	MIPS: Malta: Probe interrupt controllers via DT	2016-10-06 17:31:00 +02:00
malta-init.c	MIPS: Malta: Allow PCI devices DMA to lower 2GB physical	2016-10-06 17:31:00 +02:00
malta-int.c	MIPS: Malta: Fix i8259 irqchip setup	2017-04-10 12:02:42 +02:00
malta-memory.c	tree-wide: replace config_enabled() with IS_ENABLED()	2016-08-04 08:50:07 -04:00
malta-platform.c	MIPS: Audit and remove any unnecessary uses of module.h	2017-02-14 09:00:25 +00:00
malta-pm.c
malta-reset.c	MIPS: Malta: Remove custom halt implementation	2016-10-06 17:31:01 +02:00
malta-setup.c	MIPS: Print CM error reports upon bus errors	2016-10-06 18:02:18 +02:00
malta-time.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
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