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Tue, 11 Apr 2023 15:08:42 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 33BF8fQ8006048 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 11 Apr 2023 15:08:41 GMT Received: from [10.226.59.182] (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Tue, 11 Apr 2023 08:08:40 -0700 Message-ID: <1094266f-d845-9fa4-9f44-85de8352c04f@quicinc.com> Date: Tue, 11 Apr 2023 09:08:39 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.6.0 Subject: Re: linux-next: build failure after merge of the driver-core tree Content-Language: en-US To: Greg KH , Oded Gabbay , "Stephen Rothwell" , Dave Airlie , "Linux Kernel Mailing List" , DRI , Pranjal Ramajor Asha Kanojiya , Linux Next Mailing List , Jacek Lawrynowicz References: <20230411143812.11a4b00d@canb.auug.org.au> <2023041123-tractor-quake-c44d@gregkh> From: Jeffrey Hugo In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: wZhqxzZyL9cRef5WOovGBZ8cAVfjYBnt X-Proofpoint-GUID: wZhqxzZyL9cRef5WOovGBZ8cAVfjYBnt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-11_10,2023-04-11_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 priorityscore=1501 impostorscore=0 mlxlogscore=999 adultscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 phishscore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304110136 X-Spam-Status: No, score=-2.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/11/2023 9:01 AM, Daniel Vetter wrote: > On Tue, Apr 11, 2023 at 12:40:28PM +0200, Greg KH wrote: >> On Tue, Apr 11, 2023 at 11:55:20AM +0200, Daniel Vetter wrote: >>> On Tue, Apr 11, 2023 at 02:38:12PM +1000, Stephen Rothwell wrote: >>>> Hi all, >>>> >>>> After merging the driver-core tree, today's linux-next build (x86_64 >>>> allmodconfig) failed like this: >>>> >>>> In file included from include/linux/linkage.h:7, >>>> from include/linux/kernel.h:17, >>>> from drivers/accel/qaic/mhi_qaic_ctrl.c:4: >>>> drivers/accel/qaic/mhi_qaic_ctrl.c: In function 'mhi_qaic_ctrl_init': >>>> include/linux/export.h:27:22: error: passing argument 1 of 'class_create' from incompatible pointer type [-Werror=incompatible-pointer-types] >>>> 27 | #define THIS_MODULE (&__this_module) >>>> | ~^~~~~~~~~~~~~~~ >>>> | | >>>> | struct module * >>>> drivers/accel/qaic/mhi_qaic_ctrl.c:544:38: note: in expansion of macro 'THIS_MODULE' >>>> 544 | mqc_dev_class = class_create(THIS_MODULE, MHI_QAIC_CTRL_DRIVER_NAME); >>>> | ^~~~~~~~~~~ >>>> In file included from include/linux/device.h:31, >>>> from include/linux/mhi.h:9, >>>> from drivers/accel/qaic/mhi_qaic_ctrl.c:5: >>>> include/linux/device/class.h:229:54: note: expected 'const char *' but argument is of type 'struct module *' >>>> 229 | struct class * __must_check class_create(const char *name); >>>> | ~~~~~~~~~~~~^~~~ >>>> drivers/accel/qaic/mhi_qaic_ctrl.c:544:25: error: too many arguments to function 'class_create' >>>> 544 | mqc_dev_class = class_create(THIS_MODULE, MHI_QAIC_CTRL_DRIVER_NAME); >>>> | ^~~~~~~~~~~~ >>>> include/linux/device/class.h:229:29: note: declared here >>>> 229 | struct class * __must_check class_create(const char *name); >>>> | ^~~~~~~~~~~~ >>>> >>>> Caused by commit >>>> >>>> 1aaba11da9aa ("driver core: class: remove module * from class_create()") >>>> >>>> interacting with commit >>>> >>>> 566fc96198b4 ("accel/qaic: Add mhi_qaic_cntl") >>>> >>>> from the drm tree. >>>> >>>> I have applied the following merge fix patch for today. >>>> >>>> From: Stephen Rothwell >>>> Date: Tue, 11 Apr 2023 14:16:57 +1000 >>>> Subject: [PATCH] fixup for "driver core: class: remove module * from class_create()" >>>> >>>> interacting with "accel/qaic: Add mhi_qaic_cntl" >>>> >>>> Signed-off-by: Stephen Rothwell >>> >>> Thanks for the fixup. Since Dave is out I've made a note about this in my >>> handover mail so it won't get lost in the drm-next merge window pull. I >>> don't think we need any other coordination than mention it in each pull to >>> Linus, topic tree seems overkill for this. Plus there's no way I can >>> untangle the drm tree anyway :-). >> >> Want me to submit a patch for the drm tree that moves this to use >> class_register() instead, which will make the merge/build issue go away >> for you? That's my long-term goal here anyway, so converting this new >> code to this api today would be something I have to do eventually :) > > We kinda closed drm-next for feature work mostly already (just pulling > stuff in from subtrees), so won't really help for this merge window. > > For everything else I think this is up to Oded, I had no idea qaic needed > it's entire own dev class and I don't want to dig into this for the risk I > might freak out :-) > > Adding Oded. > > Cheers, Daniel Sorry for the mess. I made a note to update to class_register() once my drm-misc access is sorted out. Looks like we'll address the conflict in the merge window, and catch the update to the new API in the following release. -Jeff