kernel_optimize_test/drivers/firmware
Michael Kelley 6d9e8dabd4 firmware: smccc: Fix check for ARCH_SOC_ID not implemented
[ Upstream commit e95d8eaee21cd0d117d34125d4cdc97489c1ab82 ]

The ARCH_FEATURES function ID is a 32-bit SMC call, which returns
a 32-bit result per the SMCCC spec.  Current code is doing a 64-bit
comparison against -1 (SMCCC_RET_NOT_SUPPORTED) to detect that the
feature is unimplemented.  That check doesn't work in a Hyper-V VM,
where the upper 32-bits are zero as allowed by the spec.

Cast the result as an 'int' so the comparison works. The change also
makes the code consistent with other similar checks in this file.

Fixes: 821b67fa46 ("firmware: smccc: Add ARCH_SOC_ID support")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-12-01 09:19:04 +01:00
..
arm_scmi firmware: arm_scmi: pm: Propagate return value to caller 2021-12-01 09:19:03 +01:00
broadcom firmware: tee_bnxt: Release TEE shm, session, and context during kexec 2021-08-15 14:00:25 +02:00
efi efi: Change down_interruptible() in virt_efi_reset_system() to down_trylock() 2021-10-20 11:45:00 +02:00
google
imx
meson
psci firmware/psci: fix application of sizeof to pointer 2021-11-18 14:03:38 +01:00
smccc firmware: smccc: Fix check for ARCH_SOC_ID not implemented 2021-12-01 09:19:04 +01:00
tegra firmware: tegra: bpmp: Fix Tegra234-only builds 2021-07-25 14:36:15 +02:00
xilinx firmware: xilinx: Fix dereferencing freed memory 2021-05-14 09:50:05 +02:00
arm_scpi.c firmware: arm_scpi: Prevent the ternary sign expansion bug 2021-05-26 12:06:47 +02:00
arm_sdei.c
dmi_scan.c
dmi-id.c
dmi-sysfs.c
edd.c
iscsi_ibft_find.c
iscsi_ibft.c
Kconfig firmware: arm_scmi: Add SMCCC discovery dependency in Kconfig 2021-07-25 14:36:14 +02:00
Makefile
memmap.c
pcdp.c
pcdp.h
qcom_scm-legacy.c
qcom_scm-smc.c firmware: qcom_scm: Reduce locking section for __get_convention() 2021-05-14 09:50:14 +02:00
qcom_scm.c firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available() 2021-11-18 14:04:20 +01:00
qcom_scm.h firmware: qcom_scm: Reduce locking section for __get_convention() 2021-05-14 09:50:14 +02:00
qemu_fw_cfg.c qemu_fw_cfg: Make fw_cfg_rev_attr a proper kobj_attribute 2021-07-19 09:44:59 +02:00
raspberrypi.c firmware: raspberrypi: Fix a leak in 'rpi_firmware_get()' 2021-09-15 09:50:41 +02:00
scpi_pm_domain.c
stratix10-rsu.c
stratix10-svc.c firmware: stratix10-svc: Fix a resource leak in an error handling path 2021-07-14 16:56:39 +02:00
ti_sci.c
ti_sci.h
trusted_foundations.c
turris-mox-rwtm.c firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible string 2021-07-25 14:36:17 +02:00