From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Cristian Marussi <cristian.marussi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15 11/37] firmware: arm_scmi: Add SCMI PM driver remove routine
Date: Mon, 10 Oct 2022 09:05:30 +0200 [thread overview]
Message-ID: <20221010070331.578617573@linuxfoundation.org> (raw)
In-Reply-To: <20221010070331.211113813@linuxfoundation.org>
From: Cristian Marussi <cristian.marussi@arm.com>
[ Upstream commit dea796fcab0a219830831c070b8dc367d7e0f708 ]
Currently, when removing the SCMI PM driver not all the resources
registered with genpd subsystem are properly de-registered.
As a side effect of this after a driver unload/load cycle you get a
splat with a few warnings like this:
| debugfs: Directory 'BIG_CPU0' with parent 'pm_genpd' already present!
| debugfs: Directory 'BIG_CPU1' with parent 'pm_genpd' already present!
| debugfs: Directory 'LITTLE_CPU0' with parent 'pm_genpd' already present!
| debugfs: Directory 'LITTLE_CPU1' with parent 'pm_genpd' already present!
| debugfs: Directory 'LITTLE_CPU2' with parent 'pm_genpd' already present!
| debugfs: Directory 'LITTLE_CPU3' with parent 'pm_genpd' already present!
| debugfs: Directory 'BIG_SSTOP' with parent 'pm_genpd' already present!
| debugfs: Directory 'LITTLE_SSTOP' with parent 'pm_genpd' already present!
| debugfs: Directory 'DBGSYS' with parent 'pm_genpd' already present!
| debugfs: Directory 'GPUTOP' with parent 'pm_genpd' already present!
Add a proper scmi_pm_domain_remove callback to the driver in order to
take care of all the needed cleanups not handled by devres framework.
Link: https://lore.kernel.org/r/20220817172731.1185305-7-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_scmi/scmi_pm_domain.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/firmware/arm_scmi/scmi_pm_domain.c b/drivers/firmware/arm_scmi/scmi_pm_domain.c
index d5dee625de78..0e05a79de82d 100644
--- a/drivers/firmware/arm_scmi/scmi_pm_domain.c
+++ b/drivers/firmware/arm_scmi/scmi_pm_domain.c
@@ -112,9 +112,28 @@ static int scmi_pm_domain_probe(struct scmi_device *sdev)
scmi_pd_data->domains = domains;
scmi_pd_data->num_domains = num_domains;
+ dev_set_drvdata(dev, scmi_pd_data);
+
return of_genpd_add_provider_onecell(np, scmi_pd_data);
}
+static void scmi_pm_domain_remove(struct scmi_device *sdev)
+{
+ int i;
+ struct genpd_onecell_data *scmi_pd_data;
+ struct device *dev = &sdev->dev;
+ struct device_node *np = dev->of_node;
+
+ of_genpd_del_provider(np);
+
+ scmi_pd_data = dev_get_drvdata(dev);
+ for (i = 0; i < scmi_pd_data->num_domains; i++) {
+ if (!scmi_pd_data->domains[i])
+ continue;
+ pm_genpd_remove(scmi_pd_data->domains[i]);
+ }
+}
+
static const struct scmi_device_id scmi_id_table[] = {
{ SCMI_PROTOCOL_POWER, "genpd" },
{ },
@@ -124,6 +143,7 @@ MODULE_DEVICE_TABLE(scmi, scmi_id_table);
static struct scmi_driver scmi_power_domain_driver = {
.name = "scmi-power-domain",
.probe = scmi_pm_domain_probe,
+ .remove = scmi_pm_domain_remove,
.id_table = scmi_id_table,
};
module_scmi_driver(scmi_power_domain_driver);
--
2.35.1
next prev parent reply other threads:[~2022-10-10 7:12 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 7:05 [PATCH 5.15 00/37] 5.15.73-rc1 review Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 01/37] Makefile.extrawarn: Move -Wcast-function-type-strict to W=1 Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 02/37] docs: update mediator information in CoC docs Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 03/37] xsk: Inherit need_wakeup flag for shared sockets Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 04/37] mm: gup: fix the fast GUP race against THP collapse Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 05/37] powerpc/64s/radix: dont need to broadcast IPI for radix pmd collapse flush Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 06/37] wait_on_bit: add an acquire memory barrier Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 07/37] provide arch_test_bit_acquire for architectures that define test_bit Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 08/37] fs: fix UAF/GPF bug in nilfs_mdt_destroy Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 09/37] firmware: arm_scmi: Improve checks in the info_get operations Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 10/37] firmware: arm_scmi: Harden accesses to the sensor domains Greg Kroah-Hartman
2022-10-10 7:05 ` Greg Kroah-Hartman [this message]
2022-10-10 7:05 ` [PATCH 5.15 12/37] dmaengine: xilinx_dma: Fix devm_platform_ioremap_resource error handling Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 13/37] dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 14/37] dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 15/37] ARM: dts: fix Moxa SDIO compatible, remove sdhci misnomer Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 16/37] scsi: qedf: Fix a UAF bug in __qedf_probe() Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 17/37] net/ieee802154: fix uninit value bug in dgram_sendmsg Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 18/37] net: marvell: prestera: add support for for Aldrin2 Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 19/37] ALSA: hda/hdmi: Fix the converter reuse for the silent stream Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 20/37] um: Cleanup syscall_handler_t cast in syscalls_32.h Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 21/37] um: Cleanup compiler warning in arch/x86/um/tls_32.c Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 22/37] arch: um: Mark the stack non-executable to fix a binutils warning Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 23/37] net: atlantic: fix potential memory leak in aq_ndev_close() Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 24/37] drm/amd/display: Fix double cursor on non-video RGB MPO Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 25/37] drm/amd/display: Assume an LTTPR is always present on fixed_vs links Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 26/37] drm/amd/display: update gamut remap if plane has changed Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 27/37] drm/amd/display: skip audio setup when audio stream is enabled Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 28/37] mmc: core: Replace with already defined values for readability Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 29/37] mmc: core: Terminate infinite loop in SD-UHS voltage switch Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 30/37] perf parse-events: Identify broken modifiers Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 31/37] mm/huge_memory: minor cleanup for split_huge_pages_all Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 32/37] mm/huge_memory: use pfn_to_online_page() in split_huge_pages_all() Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 33/37] wifi: cfg80211: fix MCS divisor value Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 34/37] net/mlx5: Disable irq when locking lag_lock Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 35/37] usb: mon: make mmapped memory read only Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 36/37] USB: serial: ftdi_sio: fix 300 bps rate for SIO Greg Kroah-Hartman
2022-10-10 7:05 ` [PATCH 5.15 37/37] rpmsg: qcom: glink: replace strncpy() with strscpy_pad() Greg Kroah-Hartman
2022-10-10 16:05 ` [PATCH 5.15 00/37] 5.15.73-rc1 review Naresh Kamboju
2022-10-10 17:49 ` Guenter Roeck
2022-10-10 19:07 ` Greg Kroah-Hartman
2022-10-10 18:26 ` Florian Fainelli
2022-10-10 18:59 ` Ron Economos
2022-10-10 21:28 ` Shuah Khan
2022-10-11 4:23 ` Bagas Sanjaya
2022-10-12 2:24 ` Bagas Sanjaya
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