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Mon, 20 Jan 2020 17:54:31 +0000 (GMT) Subject: Re: [PATCH] fbdev: wait for references go away From: Bartlomiej Zolnierkiewicz To: Gerd Hoffmann , dri-devel@lists.freedesktop.org Cc: marmarek@invisiblethingslab.com, "open list:FRAMEBUFFER LAYER" , open list Message-ID: Date: Mon, 20 Jan 2020 18:54:35 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA01Sa0hTYRju2zk7OxtNPqe2NzWDgZWSmpY4StYFEX/6U4SsUzuo6bxsalp/ 1MjLvFUq2lAzjUyNEkk3LaQWZSYa5SUxsQsqXpvpBBe2cvuQ/Pc8z/u8V16WktUJPdnElAxe m8IlKxgJ3f3WNhwQs+Abd2zyuZ9ydMPCKOcmByjlu/JVoXKkt45Rruf10meEUWV906KoryX9 gihL3xgTtd7pE03HSsLVfHJiFq8NUl2UJCxbaum0IUF2cadNlItqBHrEsoBPwGN9rB5JWBl+ hGChp1BEiBVBrWmaImQdgaXVtJ0hdmZMd5oRCbQgsNbnCQlZQWAcb0MOlxsOgx+ri5QDM/gk 3C4kujuOhJHadtqRQOFSBEuv6pwmKVZBQ2uJswWNfaHr5yjjwB44Bta+vRYSjysM3J2hHViM T4Phw2dnUQrLYXLmnoDgg2BcITUBN4mgun0fwRFQbJ9FBLvBYv8zEcHeMFhZ6hwI8BMEf4rm KUKMCFoq7QxxnYKp4d+M42QU9oOnvUFEPgvW/AcickkXmFhxJTO4wJ3uGorIUigqkBH3Ieh4 2MHstNX3tFK3kMKwazPDrm0Mu7Yx/O/biOg2JOczdZp4XheSwl8N1HEaXWZKfODlVE0n2v6Z QXu/1YR6ty6ZEWaRYq90vtI3TibksnQ5GjMCllK4SxvztyWpmsu5xmtTL2gzk3mdGXmxtEIu Pd60cF6G47kMPonn03jtTlTAij1zkfivks+enQrbU7FpVyurmGjOeyv5cMDH3PJf3yeyjEd8 QlXWybHNblN7SM+n8JupbkNlLzOXNFsHMuJnlqvO3VBZQxS25qb9aw1ezQWr7mIP+cb9L0fd r5dUR4ynRdg6NkIr8HvxUP2VyDkq2JCQnkS1rKUHFft3cdlv1NbmFwpal8AF+1NaHfcPGtSi uy8DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrPIsWRmVeSWpSXmKPExsVy+t/xu7rhL1XjDH7fsbG48vU9m8WzWyeZ LU70fWC1uLxrDpvF58ZdLA6sHr377rF73O8+zuTxft9VNo/Pm+QCWKL0bIryS0tSFTLyi0ts laINLYz0DC0t9IxMLPUMjc1jrYxMlfTtbFJSczLLUov07RL0Mt68n8FScJaponPTT/YGxulM XYycHBICJhL3Nh1i7GLk4hASWMoocap7ClCCAyghI3F8fRlEjbDEn2tdbBA1rxkl7txbxAqS EBYwl3j04RUziM0mYCUxsX0VI4gtIuAmcXnGahaQBmaBPkaJG3v2s0N072eU+DPvAthqXgE7 iXkru8FsFgFVia3vrrCB2KICERKHd8xihKgRlDg58wkLiM0pYC8x6/x1sDizgDrQnEvMELa4 xK0n85kgbHmJ7W/nME9gFJqFpH0WkpZZSFpmIWlZwMiyilEktbQ4Nz232FCvODG3uDQvXS85 P3cTIzCyth37uXkH46WNwYcYBTgYlXh4HaapxgmxJpYVV+YeYpTgYFYS4V3QBBTiTUmsrEot yo8vKs1JLT7EaAr03ERmKdHkfGDU55XEG5oamltYGpobmxubWSiJ83YIHIwREkhPLEnNTk0t SC2C6WPi4JRqYHR496pV23Xy2mypbf52Gcvky5dL3Wr0u5M+Ne5fpHsI7/YeJ8dNkh/k9+bs iLlZd2X+/lIfmQ7Ph7Ms16hknHFd+EpzSV/Qsf2pNrcL/rw79XyJTlny1YbQWtutT+bPOrYo dtpDpojHl1qqxTIP2pyPMn664thqA/cpD5ffn7Lgc6bdr8OifVVKLMUZiYZazEXFiQAyUnU6 wgIAAA== X-CMS-MailID: 20200120175432eucas1p2609e38ccdda10cb0ba91392207b12f99 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20200120100025eucas1p21f5e2da0fd7c1fcb33cb47a97e9e645c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200120100025eucas1p21f5e2da0fd7c1fcb33cb47a97e9e645c References: <20200120100014.23488-1-kraxel@redhat.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/20/20 6:51 PM, Bartlomiej Zolnierkiewicz wrote: > do_unregister_framebuffer() doesn't guarantee that fb_info is freed after > function's return (it only drops the kernel reference on fb_info). s/kernel/fbdev device driver/ Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics