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From: Dan Carpenter <dan.carpenter@oracle.com>
To: kbuild@lists.01.org, Will Deacon <will@kernel.org>
Cc: lkp@intel.com, kbuild-all@lists.01.org,
	linux-arm-kernel@lists.infradead.org,
	Marc Zyngier <maz@kernel.org>,
	Steven Price <steven.price@arm.com>,
	Jianyong Wu <jianyong.wu@arm.com>
Subject: [arm-platforms:kvm-arm64/ptp 1/7] drivers/firmware/smccc/kvm_guest.c:46 kvm_arm_hyp_service_available() warn: signedness bug returning '(-22)'
Date: Wed, 31 Mar 2021 07:37:04 +0300
Message-ID: <20210331043704.GG2065@kadam> (raw)


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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/ptp
head:   b44b5b769890e0e73e2f9fdf461fcbcf72f14ab2
commit: fa591eac2e1ffdba4b7957fcc05b4d1f95246533 [1/7] arm/arm64: Probe for the presence of KVM hypervisor
config: arm64-randconfig-m031-20210330 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/firmware/smccc/kvm_guest.c:46 kvm_arm_hyp_service_available() warn: signedness bug returning '(-22)'

vim +46 drivers/firmware/smccc/kvm_guest.c

fa591eac2e1ffd Will Deacon 2020-12-09  43  bool kvm_arm_hyp_service_available(u32 func_id)
                                           ^^^^

fa591eac2e1ffd Will Deacon 2020-12-09  44  {
fa591eac2e1ffd Will Deacon 2020-12-09  45  	if (func_id >= ARM_SMCCC_KVM_NUM_FUNCS)
fa591eac2e1ffd Will Deacon 2020-12-09 @46  		return -EINVAL;
                                                        ^^^^^^^^^^^^^^^
This counts as true.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31  4:37 Dan Carpenter [this message]
2021-03-31  8:17 ` Marc Zyngier

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