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SubjectRe: [PATCH 11/22] firmware: arm_scmi: Add SCMIv3.1 extended names protocols support
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On 3/30/2022 5:05 PM, Cristian Marussi wrote:
> Using the common protocol helper implementation add support for all new
> SCMIv3.1 extended names commands related to all protocols with the
> exception of SENSOR_AXIS_GET_NAME.
>
> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>

This causes the following splat on a platform where regulators fail to
initialize:

[ 0.603737] ------------[ cut here ]------------
[ 0.603752] WARNING: CPU: 1 PID: 1 at mm/page_alloc.c:5402
__alloc_pages+0x6c/0x184
[ 0.603797] Modules linked in:
[ 0.603809] CPU: 1 PID: 1 Comm: swapper/0 Not tainted
5.19.0-rc1-g44dbdf3bb3f4 #42
[ 0.603818] Hardware name: BCX972160SV (DT)
[ 0.603825] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS
BTYPE=--)
[ 0.603834] pc : __alloc_pages+0x6c/0x184
[ 0.603841] lr : kmalloc_order+0x40/0x88
[ 0.603851] sp : ffffffc00a40b850
[ 0.603856] x29: ffffffc00a40b850 x28: 0000000000000000 x27:
ffffffc008d60404
[ 0.603867] x26: ffffff80c1e3e1a8 x25: ffffffc00877bd78 x24:
0000000000000058
[ 0.603878] x23: ffffffc0081921a8 x22: ffffffc008cb04b0 x21:
0000000000000000
[ 0.603889] x20: 000000000000000b x19: 000000000000000b x18:
0000000000000000
[ 0.603900] x17: 0000000000000001 x16: 0000000100000000 x15:
000000000000000a
[ 0.603911] x14: 0000000000000000 x13: ffffff80c1e3c20a x12:
ffffffffffffffff
[ 0.603922] x11: 0000000000000020 x10: 0000000000000880 x9 :
ffffffc008159dac
[ 0.603932] x8 : ffffff80c02708e0 x7 : 0000000000000004 x6 :
000000000041a880
[ 0.603943] x5 : 0000000000000001 x4 : ffffff8000000000 x3 :
0000000000000000
[ 0.603954] x2 : 0000000000000000 x1 : 0000000000000001 x0 :
ffffffc00a32d3f2
[ 0.603965] Call trace:
[ 0.603970] __alloc_pages+0x6c/0x184
[ 0.603977] kmalloc_order+0x40/0x88
[ 0.603984] kmalloc_order_trace+0x30/0xd0
[ 0.603992] __kmalloc_track_caller+0x64/0x19c
[ 0.603999] devm_kmalloc+0x5c/0xe0
[ 0.604009] scmi_voltage_protocol_init+0x14c/0x2f4
[ 0.604020] scmi_get_protocol_instance+0x128/0x1f4
[ 0.604030] scmi_devm_protocol_get+0x64/0xc8
[ 0.604037] scmi_regulator_probe+0x5c/0x42c
[ 0.604049] scmi_dev_probe+0x28/0x38
[ 0.604056] really_probe+0x1b8/0x380
[ 0.604065] __driver_probe_device+0x14c/0x164
[ 0.604073] driver_probe_device+0x48/0xe0
[ 0.604080] __driver_attach+0x160/0x170
[ 0.604087] bus_for_each_dev+0x78/0xb8
[ 0.604095] driver_attach+0x28/0x30
[ 0.604101] bus_add_driver+0xf4/0x208
[ 0.604108] driver_register+0xb4/0xf0
[ 0.604116] scmi_driver_register+0x5c/0xa4
[ 0.604123] scmi_drv_init+0x28/0x30
[ 0.604132] do_one_initcall+0x80/0x1a4
[ 0.604141] kernel_init_freeable+0x220/0x23c
[ 0.604149] kernel_init+0x28/0x128
[ 0.604158] ret_from_fork+0x10/0x20
[ 0.604166] ---[ end trace 0000000000000000 ]---
[ 0.604194] scmi-regulator: probe of scmi_dev.2 failed with error -12
[ 0.604792] arm-scmi brcm_scmi@0: Failed. SCMI protocol 22 not active.
--
Florian

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