From 1201d68f4781141411e734315f22457e6ea2cfcb Mon Sep 17 00:00:00 2001
From: Shuo Liu <shuo.a.liu@intel.com>
Date: Wed, 10 Mar 2021 23:37:08 +0800
Subject: [PATCH] virt: acrn: Correct type casting of argument of
copy_from_user()
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>
Link: https://lore.kernel.org/r/20210310153708.17451-1-shuo.a.liu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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 6996ea6219e53..130e12b8652a6 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;
--
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