Andreas Herrmann 2eddb708d8 MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx ... Starting with commit 3da5278727 (of/irq: Rework of_irq_count()) the following warning is triggered on octeon cn3xxx: [ 0.887281] WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171 of_device_alloc+0x228/0x230() [ 0.895642] Modules linked in: [ 0.898689] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0-rc7-00012-g9ae51f2-dirty #41 [ 0.906860] Stack : c8b439581166d96e ffffffff816b0000 0000000040808000 ffffffff81185ddc [ 0.906860] 0000000000000000 0000000000000000 0000000000000000 000000000000000b [ 0.906860] 000000000000000a 000000000000000a 0000000000000000 0000000000000000 [ 0.906860] ffffffff81740000 ffffffff81720000 ffffffff81615900 ffffffff816b0177 [ 0.906860] ffffffff81727d10 800000041f868fb0 0000000000000001 0000000000000000 [ 0.906860] 0000000000000000 0000000000000038 0000000000000001 ffffffff81568484 [ 0.906860] 800000041f86faa8 ffffffff81145ddc 0000000000000000 ffffffff811873f4 [ 0.906860] 800000041f868b88 800000041f86f9c0 0000000000000000 ffffffff81569c9c [ 0.906860] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 0.906860] 0000000000000000 ffffffff811205e0 0000000000000000 0000000000000000 [ 0.906860] ... [ 0.971695] Call Trace: [ 0.974139] [<ffffffff811205e0>] show_stack+0x68/0x80 [ 0.979183] [<ffffffff81569c9c>] dump_stack+0x8c/0xe0 [ 0.984196] [<ffffffff81145efc>] warn_slowpath_common+0x84/0xb8 [ 0.990110] [<ffffffff81436888>] of_device_alloc+0x228/0x230 [ 0.995726] [<ffffffff814368d8>] of_platform_device_create_pdata+0x48/0xd0 [ 1.002593] [<ffffffff81436a94>] of_platform_bus_create+0x134/0x1e8 [ 1.008837] [<ffffffff81436af8>] of_platform_bus_create+0x198/0x1e8 [ 1.015064] [<ffffffff81436cc4>] of_platform_bus_probe+0xa4/0x100 [ 1.021149] [<ffffffff81100570>] do_one_initcall+0xd8/0x128 [ 1.026701] [<ffffffff816e2a10>] kernel_init_freeable+0x144/0x210 [ 1.032753] [<ffffffff81564bc4>] kernel_init+0x14/0x110 [ 1.037973] [<ffffffff8111bb44>] ret_from_kernel_thread+0x14/0x1c With this commit the kernel starts mapping the interrupts listed for gpio-controller node. irq_domain_ops for CIU (octeon_irq_ciu_map and octeon_irq_ciu_xlat) refuse to handle the GPIO lines (returning -EINVAL) and this is causing above warning in of_device_alloc(). Modify irq_domain_ops for CIU and CIU2 to "gracefully handle" GPIO lines (neither return error code nor call octeon_irq_set_ciu_mapping for it). This should avoid the warning. (As before the real setup for GPIO lines will happen using irq_domain_ops of gpio-controller.) This patch is based on Wei's patch v2 (see http://marc.info/?l=linux-mips&m=139511814813247). Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com> Reported-by: Yang Wei <wei.yang@windriver.com> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6624/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2014-03-19 23:50:30 +01:00
..
executive	MIPS: OCTEON: Supply OCTEON+ USB nodes in internal device trees.	2014-01-23 13:02:35 +01:00
.gitignore	MIPS: Octeon: Add device tree source files.	2012-07-23 13:54:52 +01:00
cpu.c	MIPS: Octeon: Place cnmips_cu2_setup in __init memory.	2010-10-04 18:34:00 +01:00
csrc-octeon.c	MIPS: Optimize current_cpu_type() for better code.	2013-09-17 18:50:53 +02:00
dma-octeon.c	x86: Don't panic if can not alloc buffer for swiotlb	2013-01-29 19:36:53 -08:00
flash_setup.c	mips/octeon: 16-Bit NOR flash was not being detected during boot	2012-11-09 11:37:16 +01:00
Kconfig	MIPS: OCTEON: Get rid of CONFIG_CAVIUM_OCTEON_HW_FIX_UNALIGNED	2013-06-10 18:01:25 +02:00
Makefile	Merge branch '3.10-fixes' into mips-for-linux-next	2013-07-12 18:11:43 +02:00
oct_ilm.c	MIPS: Octeon: Adding driver to measure interrupt latency on Octeon.	2013-02-15 23:07:37 +01:00
octeon-irq.c	MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx	2014-03-19 23:50:30 +01:00
octeon-memcpy.S	MIPS: Whitespace cleanup.	2013-02-01 10:00:22 +01:00
octeon-platform.c	MIPS: OCTEON: Supply OCTEON+ USB nodes in internal device trees.	2014-01-23 13:02:35 +01:00
octeon_3xxx.dts	MIPS: OCTEON: Supply OCTEON+ USB nodes in internal device trees.	2014-01-23 13:02:35 +01:00
octeon_68xx.dts	MIPS: Whitespace cleanup.	2013-02-01 10:00:22 +01:00
octeon_boot.h	MIPS: Whitespace cleanup.	2013-02-01 10:00:22 +01:00
Platform	MIPS: OCTEON: Rename Kconfig CAVIUM_OCTEON_REFERENCE_BOARD to CAVIUM_OCTEON_SOC	2013-06-10 18:01:25 +02:00
setup.c	MIPS: Panic messages should not end in \n.	2013-10-29 21:24:19 +01:00
smp.c	mips: delete non-required instances of include <linux/init.h>	2014-01-24 22:39:56 +01:00