linux-stable/drivers/firmware
James Morse 1edfaecc30 firmware: arm_sdei: Use cpus_read_lock() to avoid races with cpuhp
[ Upstream commit 54f529a680 ]

SDEI has private events that need registering and enabling on each CPU.
CPUs can come and go while we are trying to do this. SDEI tries to avoid
these problems by setting the reregister flag before the register call,
so any CPUs that come online register the event too. Sticking plaster
like this doesn't work, as if the register call fails, a CPU that
subsequently comes online will register the event before reregister
is cleared.

Take cpus_read_lock() around the register and enable calls. We don't
want surprise CPUs to do the wrong thing if they race with these calls
failing.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:17:37 +02:00
..
arm_scmi firmware: arm_scmi: Fix SCMI genpd domain probing 2020-08-19 08:15:55 +02:00
broadcom firmware: bcm47xx_nvram: _really_ correct size_t printf format 2019-09-22 11:31:15 -07:00
efi efi: add missed destroy_workqueue when efisubsys_init fails 2020-08-26 10:41:07 +02:00
google firmware: google: increment VPD key_len properly 2019-10-11 08:41:34 +02:00
imx firmware: imx: scu: Fix possible memory leak in imx_scu_probe() 2020-06-24 17:50:30 +02:00
meson treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 446 2019-06-05 17:37:18 +02:00
psci drivers/firmware/psci: Fix memory leakage in alloc_init_cpu_groups() 2020-07-29 10:18:28 +02:00
tegra firmware: tegra: Changes for v5.3-rc1 2019-06-25 05:41:44 -07:00
xilinx firmware: xilinx: Add fpga API's 2019-04-15 10:22:51 +02:00
arm_scpi.c firmware: arm_scpi: convert platform driver to use dev_groups 2019-08-02 13:18:42 +02:00
arm_sdei.c firmware: arm_sdei: Use cpus_read_lock() to avoid races with cpuhp 2020-10-01 13:17:37 +02:00
dmi-id.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
dmi-sysfs.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
dmi_scan.c firmware: dmi: Fix unlikely out-of-bounds read in save_mem_devices 2019-10-14 21:41:24 +02:00
edd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
iscsi_ibft.c Merge branch 'for-linus-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft 2019-07-26 09:43:43 -07:00
iscsi_ibft_find.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
Kconfig Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
Makefile Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
memmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
pcdp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pcdp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
qcom_scm-32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
qcom_scm-64.c firmware: qcom: scm: Ensure 'a0' status code is treated as signed 2019-12-17 19:56:50 +01:00
qcom_scm.c firmware: qcom_scm: fix bogous abuse of dma-direct internals 2020-06-24 17:50:21 +02:00
qcom_scm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
qemu_fw_cfg.c firmware: Fix a reference count leak. 2020-08-11 15:33:38 +02:00
raspberrypi.c firmware: raspberrypi: register clk device 2019-06-25 16:04:26 -07:00
scpi_pm_domain.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
stratix10-rsu.c firmware: add Intel Stratix10 remote system update driver 2019-09-04 13:31:28 +02:00
stratix10-svc.c firmware: stratix10-svc: extend svc to support new RSU features 2019-09-04 13:31:28 +02:00
ti_sci.c firmware: ti_sci: Allow for device shared and exclusive requests 2019-09-04 20:44:33 +02:00
ti_sci.h ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
trusted_foundations.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
turris-mox-rwtm.c firmware: Add Turris Mox rWTM firmware driver 2019-09-04 17:32:13 +02:00