[PATCH 6.0 0823/1073] remoteproc: qcom_q6v5_pas: detach power domains on remove

Greg Kroah-Hartman
2022-12-28T16:38:44Z

From: Luca Weiss <luca.weiss@fairphone.com>

[ Upstream commit 34d01df00b84127be04c914fc9f8e8be1fcdf851 ]

We need to detach from the power domains also on remove, not just on
probe fail so a subsequent probe works as expected.

Otherwise the following error appears on re-probe:

[ 29.452005] sysfs: cannot create duplicate filename '/devices/genpd:0:3000000.remoteproc'
[ 29.477121] CPU: 1 PID: 483 Comm: sh Tainted: G W 6.1.0-rc4-00075-g71a113770bda #78
[ 29.510319] Hardware name: Fairphone 4 (DT)
[ 29.538335] Call trace:
[ 29.564470] dump_backtrace.part.0+0xe0/0xf0
[ 29.592602] show_stack+0x18/0x30
[ 29.619616] dump_stack_lvl+0x64/0x80
[ 29.646834] dump_stack+0x18/0x34
[ 29.673541] sysfs_warn_dup+0x60/0x7c
[ 29.700592] sysfs_create_dir_ns+0xec/0x110
[ 29.728057] kobject_add_internal+0xb8/0x374
[ 29.755530] kobject_add+0x9c/0x104
[ 29.782072] device_add+0xbc/0x8a0
[ 29.808445] device_register+0x20/0x30
[ 29.835175] genpd_dev_pm_attach_by_id+0xa4/0x190
[ 29.862851] genpd_dev_pm_attach_by_name+0x3c/0xb0
[ 29.890472] dev_pm_domain_attach_by_name+0x20/0x30
[ 29.918212] adsp_probe+0x278/0x580
[ 29.944384] platform_probe+0x68/0xc0
[ 29.970603] really_probe+0xbc/0x2dc
[ 29.996662] __driver_probe_device+0x78/0xe0
[ 30.023491] device_driver_attach+0x48/0xac
[ 30.050215] bind_store+0xb8/0x114
[ 30.075957] drv_attr_store+0x24/0x3c
[ 30.101874] sysfs_kf_write+0x44/0x54
[ 30.127751] kernfs_fop_write_iter+0x120/0x1f0
[ 30.154448] vfs_write+0x1ac/0x380
[ 30.179937] ksys_write+0x70/0x104
[ 30.205274] __arm64_sys_write+0x1c/0x2c
[ 30.231060] invoke_syscall+0x48/0x114
[ 30.256594] el0_svc_common.constprop.0+0x44/0xec
[ 30.283183] do_el0_svc+0x2c/0xd0
[ 30.308320] el0_svc+0x2c/0x84
[ 30.333059] el0t_64_sync_handler+0xf4/0x120
[ 30.359001] el0t_64_sync+0x18c/0x190
[ 30.384385] kobject_add_internal failed for genpd:0:3000000.remoteproc with -EEXIST, don't try to register things with the same name in the same directory.
[ 30.406029] remoteproc remoteproc0: releasing 3000000.remoteproc
[ 30.416064] qcom_q6v5_pas: probe of 3000000.remoteproc failed with error -17

Fixes: 17ee2fb4e856 ("remoteproc: qcom: pas: Vote for active/proxy power domains")
Reviewed-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221118090816.100012-2-luca.weiss@fairphone.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/remoteproc/qcom_q6v5_pas.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index 67f5152e2398..a14ff1142e76 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -573,6 +573,7 @@ static int adsp_remove(struct platform_device *pdev)
qcom_remove_sysmon_subdev(adsp->sysmon);
qcom_remove_smd_subdev(adsp->rproc, &adsp->smd_subdev);
qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
+ adsp_pds_detach(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
device_init_wakeup(adsp->dev, false);
rproc_free(adsp->rproc);

--
2.35.1