diff options
| author | Andreas Herrmann <andreas.herrmann@caviumnetworks.com> | 2014-03-19 23:03:30 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-19 23:50:30 +0100 |
| commit | 2eddb708d83ead02b5d41c65bfb26bab5afc8210 (patch) | |
| tree | 28f7f68eca02acadaa91bf66deeb6f8047c47668 /arch/um | |
| parent | b08ac66b4026f0151d712903695bf266042fbe2c (diff) | |
| download | linux-2eddb708d83ead02b5d41c65bfb26bab5afc8210.tar.gz linux-2eddb708d83ead02b5d41c65bfb26bab5afc8210.tar.bz2 linux-2eddb708d83ead02b5d41c65bfb26bab5afc8210.zip | |
MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx
Starting with commit 3da5278727a895d49a601f67fd49dffa0b80f9a5 (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>
Diffstat (limited to 'arch/um')
0 files changed, 0 insertions, 0 deletions