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virt: acrn: Correct type casting of argument of copy_from_user()

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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: 3d679d5aec ("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>
Link: https://lore.kernel.org/r/20210310153708.17451-1-shuo.a.liu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shuo Liu 2021-03-10 23:37:08 +08:00 committed by Greg Kroah-Hartman
parent a758b7c4c6
commit 1201d68f47
1 changed files with 1 additions and 1 deletions
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2
drivers/virt/acrn/hsm.c
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@ -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;