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Wysocki" , Danilo Krummrich Cc: linux-acpi@vger.kernel.org, driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, brgl@kernel.org, Bartosz Golaszewski Subject: [PATCH v2] software node: provide wrappers around kobject_get/put() Date: Mon, 27 Apr 2026 15:18:25 +0200 Message-ID: <20260427131825.15793-1-bartosz.golaszewski@oss.qualcomm.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: i44oeJ7TcCNDmtlIdJkuTfROE7PPk-vY X-Authority-Analysis: v=2.4 cv=CJEamxrD c=1 sm=1 tr=0 ts=69ef6229 cx=c_pps a=1Os3MKEOqt8YzSjcPV0cFA==:117 a=xqWC_Br6kY4A:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=bCnx2AzvNVCsJt7Mrv4A:9 a=hhpmQAJR8DioWGSBphRh:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDI3MDE0MSBTYWx0ZWRfXzdA6tjvJH6W6 gxFF1bMabWtxVqaX63k+ykYbBH6vSpJu+of40L+4fWczPz210tHElElNL6jX+CNbmciJ+YqHljJ /lJxNImOqfGYi/pIZWgTUqrPnZDgGf2ihCmGtyqqbWr1UrxbGeSw9UrL0bMPPsYP1Fzq7WuG14+ 93TTlEcVedfEk3gx34UPpilTiv3hFFk5nqf9f5w/JasDexh6h+NKPCy6DuAnQd9+Pazq1anoJ1n GWn8aZRidLE4dH0FZF2FEzsb12rmS8PB5aJpqGc3pnkEKSsAIGnonFHDdmyYw3a+BPC+B0Tkl67 fbAJJIx+L0tvnMlH+rBQ4hQi2GHF0iJ1iZGtwD3MzuFU/EQc/KMECqL0nfLEVUwlfmfytjuXuG1 ac2MEQP3uzp8hvNayxQiOfe3dM9N/qF7LjEDZJMqTXqyqsr7jI3GsIiXhhFme7IR7DYyvufPmcP 6GQW2vb5KxAv1cSrfBg== X-Proofpoint-ORIG-GUID: i44oeJ7TcCNDmtlIdJkuTfROE7PPk-vY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-27_04,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 bulkscore=0 phishscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604270141 Make the code more readable by avoid constant dereferencing of the swnode's kobject when managing references. Provide wrappers that take struct swnode * as argument and make them hide that logic. Signed-off-by: Bartosz Golaszewski --- Changes in v2: - Make swnode_get() return the address of the swnode whose refcount it bumps and use that fact in software_node_get() drivers/base/swnode.c | 40 ++++++++++++++++++++++++---------------- 1 file changed, 24 insertions(+), 16 deletions(-) diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index a19f8f722bc8e..869228a65cb36 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -374,20 +374,28 @@ EXPORT_SYMBOL_GPL(property_entries_free); /* -------------------------------------------------------------------------- */ /* fwnode operations */ -static struct fwnode_handle *software_node_get(struct fwnode_handle *fwnode) +static struct swnode *swnode_get(struct swnode *swnode) { - struct swnode *swnode = to_swnode(fwnode); - kobject_get(&swnode->kobj); + return swnode; +} + +static void swnode_put(struct swnode *swnode) +{ + kobject_put(&swnode->kobj); +} + +static struct fwnode_handle *software_node_get(struct fwnode_handle *fwnode) +{ + struct swnode *swnode = swnode_get(to_swnode(fwnode)); + return &swnode->fwnode; } static void software_node_put(struct fwnode_handle *fwnode) { - struct swnode *swnode = to_swnode(fwnode); - - kobject_put(&swnode->kobj); + swnode_put(to_swnode(fwnode)); } static bool software_node_property_present(const struct fwnode_handle *fwnode, @@ -493,7 +501,7 @@ software_node_get_named_child_node(const struct fwnode_handle *fwnode, list_for_each_entry(child, &swnode->children, entry) { if (!strcmp(childname, kobject_name(&child->kobj))) { - kobject_get(&child->kobj); + swnode_get(child); return &child->fwnode; } } @@ -737,7 +745,7 @@ software_node_find_by_name(const struct software_node *parent, const char *name) swnode = kobj_to_swnode(k); if (parent == swnode->node->parent && swnode->node->name && !strcmp(name, swnode->node->name)) { - kobject_get(&swnode->kobj); + swnode_get(swnode); break; } swnode = NULL; @@ -835,13 +843,13 @@ swnode_register(const struct software_node *node, struct swnode *parent, parent ? &parent->kobj : NULL, "node%d", swnode->id); if (ret) { - kobject_put(&swnode->kobj); + swnode_put(swnode); return ERR_PTR(ret); } /* * Assign the flag only in the successful case, so - * the above kobject_put() won't mess up with properties. + * the above swnode_put() won't mess up with properties. */ swnode->allocated = allocated; @@ -978,7 +986,7 @@ void fwnode_remove_software_node(struct fwnode_handle *fwnode) if (!swnode) return; - kobject_put(&swnode->kobj); + swnode_put(swnode); } EXPORT_SYMBOL_GPL(fwnode_remove_software_node); @@ -1002,7 +1010,7 @@ int device_add_software_node(struct device *dev, const struct software_node *nod swnode = software_node_to_swnode(node); if (swnode) { - kobject_get(&swnode->kobj); + swnode_get(swnode); } else { ret = software_node_register(node); if (ret) @@ -1044,7 +1052,7 @@ void device_remove_software_node(struct device *dev) software_node_notify_remove(dev); set_secondary_fwnode(dev, NULL); - kobject_put(&swnode->kobj); + swnode_put(swnode); } EXPORT_SYMBOL_GPL(device_remove_software_node); @@ -1097,7 +1105,7 @@ void software_node_notify(struct device *dev) if (!swnode) return; - kobject_get(&swnode->kobj); + swnode_get(swnode); ret = sysfs_create_link(&dev->kobj, &swnode->kobj, "software_node"); if (ret) return; @@ -1119,11 +1127,11 @@ void software_node_notify_remove(struct device *dev) sysfs_remove_link(&swnode->kobj, dev_name(dev)); sysfs_remove_link(&dev->kobj, "software_node"); - kobject_put(&swnode->kobj); + swnode_put(swnode); if (swnode->managed) { set_secondary_fwnode(dev, NULL); - kobject_put(&swnode->kobj); + swnode_put(swnode); } } -- 2.47.3