tcpm_register_port() will call some of the fusb302 code's callbacks
wich in turn will call fusb302_log(). So we need to call
fusb302_debugfs_init() before we call tcpm_register_port().
This fixes the following warning, which was caused by the logbuffer_lock
not yet being initialized (which is done by fusb302_debugfs_init):
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 1306 at kernel/locking/mutex.c:912
__mutex_lock+0x978/0x9a0
Modules linked in: fusb302(+) tcpm pi3usb30532 typec bq24190_charger
snd_soc_sst_cht_bsw_rt5645 mei_hdcp dwc3 intel_rapl_msr udc_core ulpi gpio_keys
intel_powerclamp coretemp kvm_intel brcmfmac kvm brcmutil joydev cfg80211
wdat_wdt irqbypass pcspkr intel_cstate extcon_intel_cht_wc i2c_cht_wc(E)
snd_intel_sst_acpi snd_intel_sst_core snd_soc_rt5645
snd_soc_sst_atom_hifi2_platform snd_soc_acpi_intel_match snd_soc_rl6231
snd_soc_acpi intel_xhci_usb_role_switch roles hci_uart snd_soc_core btqca
mei_txe btrtl processor_thermal_device mei snd_hdmi_lpe_audio lpc_ich
snd_compress btbcm intel_rapl_common ac97_bus dwc3_pci snd_pcm_dmaengine
intel_soc_dts_iosf btintel snd_seq bluetooth snd_seq_device snd_pcm
intel_cht_int33fe_musb snd_timer intel_cht_int33fe_typec intel_hid
intel_cht_int33fe_common sparse_keymap snd ecdh_generic goodix rfkill soundcore
ecc spi_pxa2xx_platform max17042_battery dw_dmac int3406_thermal dptf_power
acpi_pad soc_button_array int3400_thermal int3403_thermal
gpd_pocket_fan intel_int0002_vgpio int340x_thermal_zone acpi_thermal_rel
dm_crypt mmc_block i915 crct10dif_pclmul crc32_pclmul crc32c_intel
ghash_clmulni_intel i2c_algo_bit drm_kms_helper drm video sdhci_acpi sdhci
mmc_core pwm_lpss_platform pwm_lpss i2c_dev
CPU: 0 PID: 1306 Comm: systemd-udevd Tainted: G E 5.3.0-rc4+ #83
Hardware name: Default string Default string/Default string, BIOS 5.11
06/28/2017
RIP: 0010:__mutex_lock+0x978/0x9a0
Code: c0 0f 84 26 f7 ff ff 44 8b 05 24 25 c8 00 45 85 c0 0f 85 16 f7 ff ff 48
c7 c6 da 55 2f ae 48 c7 c7 98 8c 2d ae e8 a0 f9 5c ff <0f> 0b e9 fc f6 ff ff 4c
89 f0 4d 89 fe 49 89 c7 e9 cf fa ff ff e8
RSP: 0018:ffffb7a8c0523800 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000246
RBP: ffffb7a8c05238c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffb7a8c0523648 R11: 0000000000000030 R12: 0000000000000000
R13: ffffb7a8c0523990 R14: ffff9bf22f70c028 R15: ffff9bf22f70c360
FS: 00007f39ca234940(0000) GS:ffff9bf237400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f108481a0 CR3: 0000000271f28000 CR4: 00000000001006f0
Call Trace:
? find_held_lock+0x39/0x90
? _fusb302_log+0x81/0x1d0 [fusb302]
? vsnprintf+0x3aa/0x4f0
? _fusb302_log+0x81/0x1d0 [fusb302]
_fusb302_log+0x81/0x1d0 [fusb302]
...
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
drivers/usb/typec/tcpm/fusb302.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c
index 69a2afaf8f68..c7769fa73148 100644
--- a/drivers/usb/typec/tcpm/fusb302.c
+++ b/drivers/usb/typec/tcpm/fusb302.c
@@ -1726,6 +1726,7 @@ static int fusb302_probe(struct i2c_client *client,
INIT_WORK(&chip->irq_work, fusb302_irq_work);
INIT_DELAYED_WORK(&chip->bc_lvl_handler, fusb302_bc_lvl_handler_work);
init_tcpc_dev(&chip->tcpc_dev);
+ fusb302_debugfs_init(chip);
if (client->irq) {
chip->gpio_int_n_irq = client->irq;
@@ -1758,7 +1759,6 @@ static int fusb302_probe(struct i2c_client *client,
goto tcpm_unregister_port;
}
enable_irq_wake(chip->gpio_int_n_irq);
- fusb302_debugfs_init(chip);
i2c_set_clientdata(client, chip);
return ret;
@@ -1767,6 +1767,7 @@ static int fusb302_probe(struct i2c_client *client,
tcpm_unregister_port(chip->tcpm_port);
fwnode_handle_put(chip->tcpc_dev.fwnode);
destroy_workqueue:
+ fusb302_debugfs_exit(chip);
destroy_workqueue(chip->wq);
return ret;
--
2.23.0.rc2
