From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6C5E356455 for ; Thu, 18 Apr 2024 05:56:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713419818; cv=none; b=R3ExA7jZX0GRNh5OOhVElnM/NVtbeXPqAP6/CFi0330O1EQlpeeqLn9hUt5Dhkv/NirFdYngceK0sPqosyKu0o6HRQ2qPdPG7ztZ3U94F2o/+NhCS1sMDCTycc2TZ8leEpW+EP5gNEkN/uXAgIWQ3hGfDxeTNoNevMJBGUyweFM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713419818; c=relaxed/simple; bh=RLDSVm8K87CdU8QKvkxypvN6+yIETdNq4qZlkYhiles=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=nbb7tU0iq7RSg3VTIRWMjSuVq+9ubctda2yJiYMvVNcXGfxwYNtU7uBglLQPrQPuC8+Ry3p1rb2fGDwe/9b/9zMePvG8oxdCR0LulfplLAQfRkEaXsf2vURFxmnk1cdXwNCW7UjZhIM0HwRVqEWiOjQchSNzgs0oBsyAJGvSQOs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=VCIfWlu4; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VCIfWlu4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1713419816; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=8g2uuNxxiwYQyQPoW1yOkVCXoXx7/GQBe/aHyhjlL3E=; b=VCIfWlu4BeIpYitjAv7eJG8osClFup8+G4ETuvPhQke2iW4qC5LdvSkJrzYA8Brp5AUUe2 E5IAYvwXoMtSoxnLREZ7ERm+vnhEYnoIXS1HD2LPh2+5mzqfkZHSztdGPpwfOdwErA/Fy8 cPgxeEn/B2ml8OrKEcA5K4MBJMty5FU= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-10-yyMu19yNMDGwosGXbygUSA-1; Thu, 18 Apr 2024 01:56:54 -0400 X-MC-Unique: yyMu19yNMDGwosGXbygUSA-1 Received: by mail-wr1-f70.google.com with SMTP id ffacd0b85a97d-34619c30076so295444f8f.1 for ; Wed, 17 Apr 2024 22:56:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713419813; x=1714024613; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :from:references:cc:to:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=8g2uuNxxiwYQyQPoW1yOkVCXoXx7/GQBe/aHyhjlL3E=; b=JphxmHQ13WlMul/KRNzx27WalSsbH5FwcKcYUy89kInQAYDfSRIprl1zyuUFBBpCtj GzGtcVtaqBUT9mDHXdMWdEJPelB8OGeLpIDa3UOXtXZ+FL9ajyLKwny7Sx5xrSM2DZ9h yl7/IPMw7QevizP6q6offDWxQweqeDjEKZYmg4kRGBgO3lFRwjGTL3cFRsu0g4yDgU03 /eY4iLP7zlkPiXDNUp+56moIYJ5QLn2YSqhWPbAAsd2mOoWQnUBSdOPa47iFAJDVg57F XgUYd3ZEhY6sDFq0OWpHp1pT0NcAaXycJh8tw5Ayz2sMnq1alfXZTsIzyiWYsrJI5VP5 x4FQ== X-Forwarded-Encrypted: i=1; AJvYcCV5ZsrZublka/CvSN+kDm/0OHoGgivN5SBEORzO3qZM18ZMG0ZhZn7NyCjDhWIR5/GUk4Cr7chdlLyZDx/p6RhCc+oFnZX/ X-Gm-Message-State: AOJu0YxxiMRUoaOdDOlNtEKqKej8YhVxGQxnjDHnWuIpoY1ToSWaLSSq bjsTELd9ne7ou/iTVkaUb5K9POFOUWV71xAljJx/cTfg5CiMAbd/wxbzSXT+20mY5218iOiWUp+ 565buvUTNKiMTLj8FCxDwZAHF5Ow9/NEJm1PccarKuS+AkT2KOAxi8w== X-Received: by 2002:adf:f352:0:b0:33e:78ca:e039 with SMTP id e18-20020adff352000000b0033e78cae039mr974831wrp.59.1713419813387; Wed, 17 Apr 2024 22:56:53 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHq6gP4Yb3ppbn7gdUi3KkDfZ8Xpf5YR62TOPtanGXmO5tiuo00HgVFIKwjTNDhOMe5uMNFxQ== X-Received: by 2002:adf:f352:0:b0:33e:78ca:e039 with SMTP id e18-20020adff352000000b0033e78cae039mr974814wrp.59.1713419813022; Wed, 17 Apr 2024 22:56:53 -0700 (PDT) Received: from [192.168.0.9] (ip-109-43-177-117.web.vodafone.de. [109.43.177.117]) by smtp.gmail.com with ESMTPSA id d9-20020a056000114900b003469e7f5c52sm898525wrx.80.2024.04.17.22.56.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 17 Apr 2024 22:56:52 -0700 (PDT) Message-ID: <3c7b0835-3e4e-4c86-ae71-288aea437ed0@redhat.com> Date: Thu, 18 Apr 2024 07:56:51 +0200 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/3] s390/smsgiucv_app: Remove function pointer cast To: Nathan Chancellor , akpm@linux-foundation.org, arnd@arndb.de, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com Cc: borntraeger@linux.ibm.com, svens@linux.ibm.com, wintera@linux.ibm.com, twinkler@linux.ibm.com, linux-s390@vger.kernel.org, netdev@vger.kernel.org, llvm@lists.linux.dev, patches@lists.linux.dev References: <20240417-s390-drivers-fix-cast-function-type-v1-0-fd048c9903b0@kernel.org> <20240417-s390-drivers-fix-cast-function-type-v1-2-fd048c9903b0@kernel.org> From: Thomas Huth Content-Language: en-US Autocrypt: addr=thuth@redhat.com; keydata= xsFNBFH7eUwBEACzyOXKU+5Pcs6wNpKzrlJwzRl3VGZt95VCdb+FgoU9g11m7FWcOafrVRwU yYkTm9+7zBUc0sW5AuPGR/dp3pSLX/yFWsA/UB4nJsHqgDvDU7BImSeiTrnpMOTXb7Arw2a2 4CflIyFqjCpfDM4MuTmzTjXq4Uov1giGE9X6viNo1pxyEpd7PanlKNnf4PqEQp06X4IgUacW tSGj6Gcns1bCuHV8OPWLkf4hkRnu8hdL6i60Yxz4E6TqlrpxsfYwLXgEeswPHOA6Mn4Cso9O 0lewVYfFfsmokfAVMKWzOl1Sr0KGI5T9CpmRfAiSHpthhHWnECcJFwl72NTi6kUcUzG4se81 O6n9d/kTj7pzTmBdfwuOZ0YUSqcqs0W+l1NcASSYZQaDoD3/SLk+nqVeCBB4OnYOGhgmIHNW 0CwMRO/GK+20alxzk//V9GmIM2ACElbfF8+Uug3pqiHkVnKqM7W9/S1NH2qmxB6zMiJUHlTH gnVeZX0dgH27mzstcF786uPcdEqS0KJuxh2kk5IvUSL3Qn3ZgmgdxBMyCPciD/1cb7/Ahazr 3ThHQXSHXkH/aDXdfLsKVuwDzHLVSkdSnZdt5HHh75/NFHxwaTlydgfHmFFwodK8y/TjyiGZ zg2Kje38xnz8zKn9iesFBCcONXS7txENTzX0z80WKBhK+XSFJwARAQABzR5UaG9tYXMgSHV0 aCA8dGh1dGhAcmVkaGF0LmNvbT7CwXgEEwECACIFAlVgX6oCGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAAoJEC7Z13T+cC21EbIP/ii9cvT2HHGbFRl8HqGT6+7Wkb+XLMqJBMAIGiQK QIP3xk1HPTsLfVG0ao4hy/oYkGNOP8+ubLnZen6Yq3zAFiMhQ44lvgigDYJo3Ve59gfe99KX EbtB+X95ODARkq0McR6OAsPNJ7gpEUzfkQUUJTXRDQXfG/FX303Gvk+YU0spm2tsIKPl6AmV 1CegDljzjycyfJbk418MQmMu2T82kjrkEofUO2a24ed3VGC0/Uz//XCR2ZTo+vBoBUQl41BD eFFtoCSrzo3yPFS+w5fkH9NT8ChdpSlbNS32NhYQhJtr9zjWyFRf0Zk+T/1P7ECn6gTEkp5k ofFIA4MFBc/fXbaDRtBmPB0N9pqTFApIUI4vuFPPO0JDrII9dLwZ6lO9EKiwuVlvr1wwzsgq zJTPBU3qHaUO4d/8G+gD7AL/6T4zi8Jo/GmjBsnYaTzbm94lf0CjXjsOX3seMhaE6WAZOQQG tZHAO1kAPWpaxne+wtgMKthyPLNwelLf+xzGvrIKvLX6QuLoWMnWldu22z2ICVnLQChlR9d6 WW8QFEpo/FK7omuS8KvvopFcOOdlbFMM8Y/8vBgVMSsK6fsYUhruny/PahprPbYGiNIhKqz7 UvgyZVl4pBFjTaz/SbimTk210vIlkDyy1WuS8Zsn0htv4+jQPgo9rqFE4mipJjy/iboDzsFN BFH7eUwBEAC2nzfUeeI8dv0C4qrfCPze6NkryUflEut9WwHhfXCLjtvCjnoGqFelH/PE9NF4 4VPSCdvD1SSmFVzu6T9qWdcwMSaC+e7G/z0/AhBfqTeosAF5XvKQlAb9ZPkdDr7YN0a1XDfa +NgA+JZB4ROyBZFFAwNHT+HCnyzy0v9Sh3BgJJwfpXHH2l3LfncvV8rgFv0bvdr70U+On2XH 5bApOyW1WpIG5KPJlDdzcQTyptOJ1dnEHfwnABEfzI3dNf63rlxsGouX/NFRRRNqkdClQR3K gCwciaXfZ7ir7fF0u1N2UuLsWA8Ei1JrNypk+MRxhbvdQC4tyZCZ8mVDk+QOK6pyK2f4rMf/ WmqxNTtAVmNuZIwnJdjRMMSs4W4w6N/bRvpqtykSqx7VXcgqtv6eqoDZrNuhGbekQA0sAnCJ VPArerAZGArm63o39me/bRUQeQVSxEBmg66yshF9HkcUPGVeC4B0TPwz+HFcVhheo6hoJjLq knFOPLRj+0h+ZL+D0GenyqD3CyuyeTT5dGcNU9qT74bdSr20k/CklvI7S9yoQje8BeQAHtdV cvO8XCLrpGuw9SgOS7OP5oI26a0548M4KldAY+kqX6XVphEw3/6U1KTf7WxW5zYLTtadjISB X9xsRWSU+Yqs3C7oN5TIPSoj9tXMoxZkCIHWvnqGwZ7JhwARAQABwsFfBBgBAgAJBQJR+3lM AhsMAAoJEC7Z13T+cC21hPAQAIsBL9MdGpdEpvXs9CYrBkd6tS9mbaSWj6XBDfA1AEdQkBOn ZH1Qt7HJesk+qNSnLv6+jP4VwqK5AFMrKJ6IjE7jqgzGxtcZnvSjeDGPF1h2CKZQPpTw890k fy18AvgFHkVk2Oylyexw3aOBsXg6ukN44vIFqPoc+YSU0+0QIdYJp/XFsgWxnFIMYwDpxSHS 5fdDxUjsk3UBHZx+IhFjs2siVZi5wnHIqM7eK9abr2cK2weInTBwXwqVWjsXZ4tq5+jQrwDK cvxIcwXdUTLGxc4/Z/VRH1PZSvfQxdxMGmNTGaXVNfdFZjm4fz0mz+OUi6AHC4CZpwnsliGV ODqwX8Y1zic9viSTbKS01ZNp175POyWViUk9qisPZB7ypfSIVSEULrL347qY/hm9ahhqmn17 Ng255syASv3ehvX7iwWDfzXbA0/TVaqwa1YIkec+/8miicV0zMP9siRcYQkyTqSzaTFBBmqD oiT+z+/E59qj/EKfyce3sbC9XLjXv3mHMrq1tKX4G7IJGnS989E/fg6crv6NHae9Ckm7+lSs IQu4bBP2GxiRQ+NV3iV/KU3ebMRzqIC//DCOxzQNFNJAKldPe/bKZMCxEqtVoRkuJtNdp/5a yXFZ6TfE1hGKrDBYAm4vrnZ4CXFSBDllL59cFFOJCkn4Xboj/aVxxJxF30bn In-Reply-To: <20240417-s390-drivers-fix-cast-function-type-v1-2-fd048c9903b0@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 17/04/2024 20.24, Nathan Chancellor wrote: > Clang warns (or errors with CONFIG_WERROR) after enabling > -Wcast-function-type-strict by default: > > drivers/s390/net/smsgiucv_app.c:176:26: error: cast from 'void (*)(const void *)' to 'void (*)(struct device *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict] > 176 | smsg_app_dev->release = (void (*)(struct device *)) kfree; > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 1 error generated. > > Add a standalone function to fix the warning properly, which addresses > the root of the warning that these casts are not safe for kCFI. > > Signed-off-by: Nathan Chancellor > --- > drivers/s390/net/smsgiucv_app.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) Reviewed-by: Thomas Huth