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Date: Wed, 4 Feb 2026 06:08:32 +0000
From: Wei Liu <wei.liu@kernel.org>
To: Naman Jain <namjain@linux.microsoft.com>
Cc: mhklinux@outlook.com, kys@microsoft.com, haiyangz@microsoft.com,
	wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com,
	linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] mshv: Fix compiler warning about cast converting
 incompatible function type
Message-ID: <20260204060832.GC79272@liuwe-devbox-debian-v2.local>
References: <20260118170245.160050-1-mhklinux@outlook.com>
 <e99513ac-a790-424b-9b80-4a91fd87cba2@linux.microsoft.com>
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In-Reply-To: <e99513ac-a790-424b-9b80-4a91fd87cba2@linux.microsoft.com>

On Mon, Jan 19, 2026 at 11:02:01AM +0530, Naman Jain wrote:
> 
> 
> On 1/18/2026 10:32 PM, mhkelley58@gmail.com wrote:
> > From: Michael Kelley <mhklinux@outlook.com>
> > 
> > In mshv_vtl_sint_ioctl_pause_msg_stream(), the reference to function
> > mshv_vtl_synic_mask_vmbus_sint() is cast to type smp_call_func_t. The
> > cast generates a compiler warning because the function signature of
> > mshv_vtl_synic_mask_vmbus_sint() doesn't match smp_call_func_t.
> > 
> > There's no actual bug here because the mis-matched function signatures
> > are compatible at runtime. Nonetheless, eliminate the compiler warning
> > by changing the function signature of mshv_vtl_synic_mask_vmbus_sint()
> > to match what on_each_cpu() expects. Remove the cast because it is then
> > no longer necessary.
> > 
> > No functional change.
> > 
> > Reported-by: kernel test robot <lkp@intel.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202601170352.qbh3EKH5-lkp@intel.com/
> > Signed-off-by: Michael Kelley <mhklinux@outlook.com>
[...]
> 
> Reviewed-by: Naman Jain <namjain@linux.microsoft.com>
> 

Queued.