From: Maud Spierings <maud_spierings@hotmail.com>
To: william.qiu@starfivetech.com
Cc: hal.feng@starfivetech.com, linux-kernel@vger.kernel.org,
linux-pwm@vger.kernel.org, p.zabel@pengutronix.de,
ukleinek@kernel.org
Subject: Re: [PATCH v16] pwm: opencores: Add PWM driver support
Date: Sun, 5 Jan 2025 15:51:22 +0100 [thread overview]
Message-ID: <AM7P189MB100935C2EB7BC185C6567A7AE3172@AM7P189MB1009.EURP189.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20241028014609.153997-1-william.qiu@starfivetech.com>
Hello William,
I tested this patch on my deepcomputing fml13v01 with a pwm-backlight
and I am getting an oops:
[ 10.308290] Unable to handle kernel access to user memory without
uaccess routines at virtual address 0000000200000001
[ 10.319038] Oops [#1]
[ 10.321318] Modules linked in: pwm_bl(+) sfctemp designware_i2s
snd_soc_spdif_tx dm_mod configfs ip_tables x_tables vs_drm
drm_dma_helper stmmac pcs_xpcs pcie_starfive phy_jh7110_usb
phy_jh7110_pcie phy_jh
7110_dphy_rx phy_generic overlay jh7110_trng jh7110_tdm jh7110_pwmdac
inno_hdmi drm_kms_helper i2c_hid_of i2c_hid hid_multitouch hci_uart drm
drm_panel_orientation_quirks clk_starfive_jh7110_vout clk_starfive
_jh7110_stg clk_starfive_jh7110_isp clk_starfive_jh7110_aon
clk_starfive_jh7100_audio cdns3_starfive cdns3 cdns_usb_common roles
btintel bridge stp llc bluetooth libaes ecdh_generic ecc backlight efivarfs
[ 10.375483] CPU: 3 UID: 0 PID: 307 Comm: (udev-worker) Not tainted
6.13.0-rc4-00032-ga27a3464e6ab-dirty #16
[ 10.385227] Hardware name: Unknown Unknown Product/Unknown Product,
BIOS 2021.10 10/01/2021
[ 10.393576] epc : ocores_pwm_get_state+0x22/0xca
[ 10.398204] ra : pwm_get_state_hw+0x10c/0x132
[ 10.402651] epc : ffffffff804f8d48 ra : ffffffff804f81f4 sp :
ffffffc600f1b5c0
[ 10.409875] gp : ffffffff814f8658 tp : ffffffd6c3efe400 t0 :
0000000000000000
[ 10.417096] t1 : 0000000000000040 t2 : ffffffff814a0498 s0 :
ffffffc600f1b600
[ 10.424317] s1 : ffffffd6c0b9b800 a0 : ffffffc6007b0000 a1 :
ffffffd6c0b9bbb8
[ 10.431539] a2 : ffffffc600f1b690 a3 : 0000000000000000 a4 :
0000000000000000
[ 10.438760] a5 : 0000000200000001 a6 : ffffffd6c07fd918 a7 :
0000000000000000
[ 10.445982] s2 : ffffffff80e6b2c0 s3 : ffffffd6c0b9bec0 s4 :
ffffffc600f1b690
[ 10.453204] s5 : ffffffd6c0b9bbb8 s6 : 0000000000000000 s7 :
ffffffd6c0b9bb78
[ 10.460426] s8 : ffffffc600f1bc90 s9 : 0000000000000000 s10:
ffffffc600f1bc40
[ 10.467648] s11: 0000000000000001 t3 : 0000000000000000 t4 :
0000000000000002
[ 10.474868] t5 : 0000000000000000 t6 : 0000000000000402
[ 10.480179] status: 0000000200000120 badaddr: 0000000200000001 cause:
000000000000000d
[ 10.488096] [<ffffffff804f8d48>] ocores_pwm_get_state+0x22/0xca
[ 10.494019] [<ffffffff804f81f4>] pwm_get_state_hw+0x10c/0x132
[ 10.499768] [<ffffffff804f8338>] pwm_request_from_chip.part.0+0x11e/0x182
[ 10.506556] [<ffffffff804f8640>] of_pwm_xlate_with_flags+0x26/0x64
[ 10.512739] [<ffffffff804f7084>] of_pwm_get+0x146/0x1ea
[ 10.517967] [<ffffffff804f84e8>] pwm_get+0x14c/0x1d4
[ 10.522934] [<ffffffff804f8582>] devm_pwm_get+0x12/0x4e
[ 10.528166] [<ffffffff018ab2ae>] pwm_backlight_probe+0x102/0x84a [pwm_bl]
[ 10.534963] [<ffffffff805a05c4>] platform_probe+0x4e/0xb2
[ 10.540369] [<ffffffff8059e0b0>] really_probe+0x84/0x22a
[ 10.545684] [<ffffffff8059e2b2>] __driver_probe_device+0x5c/0xdc
[ 10.551694] [<ffffffff8059e3f4>] driver_probe_device+0x2c/0xb2
[ 10.557529] [<ffffffff8059e574>] __driver_attach+0x6c/0x11a
[ 10.563104] [<ffffffff8059c1c4>] bus_for_each_dev+0x62/0xb0
[ 10.568679] [<ffffffff8059daf2>] driver_attach+0x1a/0x22
[ 10.573993] [<ffffffff8059d3e8>] bus_add_driver+0xce/0x1d6
[ 10.579481] [<ffffffff8059f114>] driver_register+0x40/0xda
[ 10.584970] [<ffffffff805a034c>] __platform_driver_register+0x1c/0x24
[ 10.591415] [<ffffffff018b1020>]
pwm_backlight_driver_init+0x20/0x1000 [pwm_bl]
[ 10.598730] [<ffffffff8000f12c>] do_one_initcall+0x5c/0x1aa
[ 10.604306] [<ffffffff8009f992>] do_init_module+0x52/0x1b2
[ 10.609796] [<ffffffff800a10f2>] load_module+0x1374/0x177e
[ 10.615284] [<ffffffff800a16c0>] init_module_from_file+0x76/0xae
[ 10.621292] [<ffffffff800a18e4>] __riscv_sys_finit_module+0x1b4/0x31c
[ 10.627735] [<ffffffff80983cf4>] do_trap_ecall_u+0x1a8/0x1d4
[ 10.633399] [<ffffffff8098d8a2>]
_new_vmalloc_restore_context_a0+0xc2/0xce
[ 10.640285] Code: ec4e 0080 3983 0785 8aae 8a32 b783 0009 b503 0089
(639c) c399
[ 10.647772] ---[ end trace 0000000000000000 ]---
kind regards,
Maud Spierings
next prev parent reply other threads:[~2025-01-05 14:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-28 1:46 William Qiu
2024-11-19 6:45 ` William Qiu
2024-12-19 20:59 ` Uwe Kleine-König
2024-12-23 2:47 ` William Qiu
2024-12-23 17:12 ` Uwe Kleine-König
2024-12-24 1:53 ` William Qiu
2024-12-27 8:38 ` Uwe Kleine-König
2024-12-27 8:42 ` William Qiu
2025-01-05 14:51 ` Maud Spierings [this message]
2025-01-06 10:08 ` William Qiu
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