Messages in this thread Patch in this message | | | From | shuo.a.liu@intel ... | Subject | [PATCH] virt: acrn: Correct type casting of argument of copy_from_user() | Date | Wed, 10 Mar 2021 23:37:08 +0800 |
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From: Shuo Liu <shuo.a.liu@intel.com>
hsm.c:336:50: warning: incorrect type in argument 2 (different address spaces) hsm.c:336:50: expected void const [noderef] __user *from hsm.c:336:50: got void *
This patch fixes above sparse warning.
Fixes: 3d679d5aec64 ("virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Shuo Liu <shuo.a.liu@intel.com> --- drivers/virt/acrn/hsm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/virt/acrn/hsm.c b/drivers/virt/acrn/hsm.c index 1f6b7c54a1a4..37cc7acd7df8 100644 --- a/drivers/virt/acrn/hsm.c +++ b/drivers/virt/acrn/hsm.c @@ -333,7 +333,7 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd, acrn_ioreq_request_clear(vm); break; case ACRN_IOCTL_PM_GET_CPU_STATE: - if (copy_from_user(&cstate_cmd, (void *)ioctl_param, + if (copy_from_user(&cstate_cmd, (void __user *)ioctl_param, sizeof(cstate_cmd))) return -EFAULT; -- 2.28.0
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