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linux/drivers/firmware
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Michael Kelley 88f6b5f10f firmware: smccc: Fix check for ARCH_SOC_ID not implemented 
[ Upstream commit e95d8eaee2 ]

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>
History 2021-12-01 09:04:49 +01:00
..
arm_ffa firmware: arm_ffa: Fix __ffa_devices_unregister 2021-10-05 10:39:47 +01:00
arm_scmi firmware: arm_scmi: pm: Propagate return value to caller 2021-12-01 09:04:46 +01:00
broadcom firmware: tee_bnxt: Release TEE shm, session, and context during kexec 2021-07-21 07:55:50 +02:00
efi efi: Change down_interruptible() in virt_efi_reset_system() to down_trylock() 2021-10-05 13:07:01 +02:00
google bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
imx firmware: imx: scu-pd: add missed ADC1 pd 2021-03-29 09:34:37 +08:00
meson firmware: meson-sm: enable build as module 2020-10-26 13:36:05 -07:00
psci firmware/psci: fix application of sizeof to pointer 2021-11-18 19:15:53 +01:00
smccc firmware: smccc: Fix check for ARCH_SOC_ID not implemented 2021-12-01 09:04:49 +01:00
tegra firmware: tegra: Stop using seq_get_buf() 2021-08-11 12:17:18 +02:00
xilinx firmware: xilinx: Fix incorrect names in kernel-doc 2021-08-06 15:17:53 +02:00
arm_scpi.c ARM SCMI updates for v5.14 2021-06-12 08:42:29 -07:00
arm_sdei.c arm64: sdei: move uaccess logic to arch/arm64/ 2020-12-02 19:46:14 +00:00
dmi-id.c firmware: dmi: Move product_sku info to the end of the modalias 2021-09-02 17:28:53 +02:00
dmi-sysfs.c firmware: dmi-sysfs: Replace zero-length array with flexible-array member 2020-06-15 23:08:04 -05:00
dmi_scan.c ASoC: soc-core: fix DMI handling 2021-03-11 13:25:09 +00:00
edd.c edd: Use scnprintf() for avoiding potential buffer overflow 2020-04-02 20:42:29 +02:00
iscsi_ibft.c iscsi_ibft: Fix isa_bus_to_virt not working under ARM 2021-09-02 16:22:00 -04:00
iscsi_ibft_find.c iscsi_ibft: fix warning in reserve_ibft_region() 2021-08-05 19:47:57 -04:00
Kconfig qcom_scm: hide Kconfig symbol 2021-10-07 16:51:57 +02:00
Makefile ARM: SoC drivers for 5.15 2021-09-01 15:25:28 -07:00
memmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
pcdp.c efi/ia64: Move HCDP and MPS table handling into IA64 arch code 2020-02-23 21:59:42 +01:00
pcdp.h firmware: pcdp: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
qcom_scm-legacy.c firmware: qcom_scm: Fix kernel-doc function names to match 2021-04-06 21:25:49 -05:00
qcom_scm-smc.c firmware: qcom_scm: Reduce locking section for __get_convention() 2021-04-06 21:25:23 -05:00
qcom_scm.c firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available() 2021-11-18 19:16:55 +01:00
qcom_scm.h firmware: qcom_scm: Introduce SCM calls to access LMh 2021-08-18 09:31:53 +02:00
qemu_fw_cfg.c qemu_fw_cfg: Make fw_cfg_rev_attr a proper kobj_attribute 2021-06-29 13:25:20 -07:00
raspberrypi.c firmware: raspberrypi: Fix a leak in 'rpi_firmware_get()' 2021-08-18 16:02:08 +02:00
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: stratix10-rsu: fix warnings 2020-07-02 14:48:48 +02:00
stratix10-svc.c firmware: stratix10-svc: Fix a resource leak in an error handling path 2021-05-27 14:50:34 +02:00
sysfb.c drivers/firmware: consolidate EFI framebuffer setup for all arches 2021-07-21 12:04:56 +02:00
sysfb_simplefb.c drivers/firmware: consolidate EFI framebuffer setup for all arches 2021-07-21 12:04:56 +02:00
ti_sci.c firmware: ti_sci: rm: Remove unused config() from ti_sci_rm_ringacc_ops 2020-11-01 19:38:04 -08:00
ti_sci.h firmware: ti_sci: rm: Add new ops for ring configuration 2020-11-01 19:38:02 -08:00
trusted_foundations.c firmware: tf: Different way of L2 cache enabling after LP2 suspend 2020-05-06 18:27:26 +02:00
turris-mox-rwtm.c mvebu drivers for 5.14 (part 1) 2021-06-23 18:57:40 -07:00