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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 22 Mar 2019 23:35:11 -0000 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x2MNZBqJ15204400 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 22 Mar 2019 23:35:11 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7B841112062; Fri, 22 Mar 2019 23:35:11 +0000 (GMT) Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0F764112064; Fri, 22 Mar 2019 23:35:11 +0000 (GMT) Received: from linux-xej6.aus.stglabs.ibm.com (unknown [9.40.195.184]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 22 Mar 2019 23:35:10 +0000 (GMT) From: Tyrel Datwyler To: bhelgaas@google.com Subject: [PATCH 2/2] pci: rpaphp: get/put device node reference during slot alloc/dealloc Date: Fri, 22 Mar 2019 13:27:22 -0500 X-Mailer: git-send-email 2.12.3 In-Reply-To: <20190322182722.8255-1-tyreld@linux.vnet.ibm.com> References: <20190322182722.8255-1-tyreld@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19032223-0040-0000-0000-000004D62239 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010797; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000282; SDB=6.01178238; UDB=6.00606765; IPR=6.00958937; MB=3.00026118; MTD=3.00000008; XFM=3.00000015; UTC=2019-03-22 23:35:12 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19032223-0041-0000-0000-000008E1407A Message-Id: <20190322182722.8255-2-tyreld@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-22_13:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=777 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903220167 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Tyrel Datwyler Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" When allocating the slot structure we store a pointer to the associated device_node. We really should be incrementing the reference count, so add an of_node_get() during slot alloc and an of_node_put() during slot dealloc. Signed-off-by: Tyrel Datwyler --- drivers/pci/hotplug/rpaphp_slot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c index 5282aa3e33c5..93b4a945c55d 100644 --- a/drivers/pci/hotplug/rpaphp_slot.c +++ b/drivers/pci/hotplug/rpaphp_slot.c @@ -21,6 +21,7 @@ /* free up the memory used by a slot */ void dealloc_slot_struct(struct slot *slot) { + of_node_put(slot->dn); kfree(slot->name); kfree(slot); } @@ -36,7 +37,7 @@ struct slot *alloc_slot_struct(struct device_node *dn, slot->name = kstrdup(drc_name, GFP_KERNEL); if (!slot->name) goto error_slot; - slot->dn = dn; + slot->dn = of_node_get(dn); slot->index = drc_index; slot->power_domain = power_domain; slot->hotplug_slot.ops = &rpaphp_hotplug_slot_ops; -- 2.12.3