[v3,12/32] media: v4l: async: Clean up list heads and entries

Message ID	20230524112349.2141396-13-sakari.ailus@linux.intel.com
State	Superseded
Headers	show Return-Path: <linux-media-owner@vger.kernel.org> From: Sakari Ailus <sakari.ailus@linux.intel.com> To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, Philipp Zabel <p.zabel@pengutronix.de>, hverkuil@xs4all.nl, Francesco Dolcini <francesco@dolcini.it>, aishwarya.kothari@toradex.com, Robert Foss <rfoss@kernel.org>, Todor Tomov <todor.too@gmail.com>, Hyun Kwon <hyun.kwon@xilinx.com>, bingbu.cao@intel.com, niklas.soderlund@ragnatech.se Subject: [PATCH v3 12/32] media: v4l: async: Clean up list heads and entries Date: Wed, 24 May 2023 14:23:29 +0300 Message-Id: <20230524112349.2141396-13-sakari.ailus@linux.intel.com> In-Reply-To: <20230524112349.2141396-1-sakari.ailus@linux.intel.com> References: <20230524112349.2141396-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	None \| expand [v3,02/32] media: Documentation: v4l: Document missing async subdev function [v3,04/32] media: omap3isp: Don't check for the sub-device's notifier [v3,07/32] media: v4l: async: Drop unneeded list entry initialisation [v3,10/32] media: v4l: async: Rename V4L2_ASYNC_MATCH_ macros, add TYPE_ [v3,11/32] media: v4l: async: Only pass match information for async subdev validation [v3,12/32] media: v4l: async: Clean up list heads and entries [v3,13/32] media: v4l: async: Simplify async sub-device fwnode matching [v3,15/32] media: v4l: async: Clean up error handling in v4l2_async_match_notify [v3,17/32] media: v4l: async: Rework internal lists [v3,19/32] media: v4l: async: Allow multiple connections between entities [v3,21/32] media: v4l: async: Support fwnode endpoint list matching for subdevs [v3,22/32] media: adv748x: Return to endpoint matching [v3,25/32] media: marvell: cafe: Register V4L2 device earlier [v3,26/32] media: am437x-vpfe: Register V4L2 device early [v3,28/32] media: xilinx-vipp: Init async notifier after registering V4L2 device [v3,32/32] media: Documentation: v4l: Document sub-device notifiers

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c index 3c84cb1216320..9231d6a65f4ec 100644 --- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c +++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c @@ -1420,7 +1420,7 @@ static int cio2_notifier_complete(struct v4l2_async_notifier *notifier) unsigned int pad; int ret; - list_for_each_entry(asd, &cio2->notifier.asd_list, asd_list) { + list_for_each_entry(asd, &cio2->notifier.asd_list, asd_entry) { s_asd = to_sensor_asd(asd); q = &cio2->queue[s_asd->csi2.port]; diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c index b309af0c83749..52c5a7decf284 100644 --- a/drivers/media/platform/xilinx/xilinx-vipp.c +++ b/drivers/media/platform/xilinx/xilinx-vipp.c @@ -56,7 +56,7 @@ xvip_graph_find_entity(struct xvip_composite_device *xdev, struct xvip_graph_entity *entity; struct v4l2_async_subdev *asd; - list_for_each_entry(asd, &xdev->notifier.asd_list, asd_list) { + list_for_each_entry(asd, &xdev->notifier.asd_list, asd_entry) { entity = to_xvip_entity(asd); if (entity->asd.match.fwnode == fwnode) return entity; @@ -291,7 +291,7 @@ static int xvip_graph_notify_complete(struct v4l2_async_notifier *notifier) dev_dbg(xdev->dev, "notify complete, all subdevs registered\n"); /* Create links for every entity. */ - list_for_each_entry(asd, &xdev->notifier.asd_list, asd_list) { + list_for_each_entry(asd, &xdev->notifier.asd_list, asd_entry) { entity = to_xvip_entity(asd); ret = xvip_graph_build_one(xdev, entity); if (ret < 0) @@ -393,7 +393,7 @@ static int xvip_graph_parse(struct xvip_composite_device *xdev) if (ret < 0) return 0; - list_for_each_entry(asd, &xdev->notifier.asd_list, asd_list) { + list_for_each_entry(asd, &xdev->notifier.asd_list, asd_entry) { entity = to_xvip_entity(asd); ret = xvip_graph_parse_one(xdev, entity->asd.match.fwnode); if (ret < 0) { diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index 5eb9850f1c6c4..06b1e1a1a5f87 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -213,7 +213,7 @@ v4l2_async_find_match(struct v4l2_async_notifier *notifier, struct v4l2_async_match_desc *match); struct v4l2_async_subdev *asd; - list_for_each_entry(asd, &notifier->waiting, list) { + list_for_each_entry(asd, &notifier->waiting_list, waiting_entry) { /* bus_type has been verified valid before */ switch (asd->match.type) { case V4L2_ASYNC_MATCH_TYPE_I2C: @@ -262,7 +262,7 @@ v4l2_async_find_subdev_notifier(struct v4l2_subdev *sd) { struct v4l2_async_notifier *n; - list_for_each_entry(n, &notifier_list, list) + list_for_each_entry(n, &notifier_list, notifier_entry) if (n->sd == sd) return n; @@ -287,10 +287,10 @@ v4l2_async_nf_can_complete(struct v4l2_async_notifier *notifier) { struct v4l2_subdev *sd; - if (!list_empty(&notifier->waiting)) + if (!list_empty(&notifier->waiting_list)) return false; - list_for_each_entry(sd, &notifier->done, async_list) { + list_for_each_entry(sd, &notifier->done_list, async_list) { struct v4l2_async_notifier *subdev_notifier = v4l2_async_find_subdev_notifier(sd); @@ -312,7 +312,7 @@ v4l2_async_nf_try_complete(struct v4l2_async_notifier *notifier) struct v4l2_async_notifier *__notifier = notifier; /* Quick check whether there are still more sub-devices here. */ - if (!list_empty(&notifier->waiting)) + if (!list_empty(&notifier->waiting_list)) return 0; if (notifier->sd) @@ -391,13 +391,12 @@ static int v4l2_async_match_notify(struct v4l2_async_notifier *notifier, return ret; } - /* Remove from the waiting list */ - list_del(&asd->list); + list_del(&asd->waiting_entry); sd->asd = asd; sd->notifier = notifier; /* Move from the global subdevice list to notifier's done */ - list_move(&sd->async_list, &notifier->done); + list_move(&sd->async_list, &notifier->done_list); dev_dbg(notifier_dev(notifier), "v4l2-async: %s bound (ret %d)\n", dev_name(sd->dev), ret); @@ -478,7 +477,7 @@ v4l2_async_nf_unbind_all_subdevs(struct v4l2_async_notifier *notifier, { struct v4l2_subdev *sd, *tmp; - list_for_each_entry_safe(sd, tmp, &notifier->done, async_list) { + list_for_each_entry_safe(sd, tmp, &notifier->done_list, async_list) { struct v4l2_async_notifier *subdev_notifier = v4l2_async_find_subdev_notifier(sd); @@ -487,7 +486,8 @@ v4l2_async_nf_unbind_all_subdevs(struct v4l2_async_notifier *notifier, v4l2_async_nf_call_unbind(notifier, sd, sd->asd); if (readd) - list_add_tail(&sd->asd->list, &notifier->waiting); + list_add_tail(&sd->asd->waiting_entry, + &notifier->waiting_list); v4l2_async_cleanup(sd); list_move(&sd->async_list, &subdev_list); @@ -504,11 +504,11 @@ v4l2_async_nf_has_async_match_entry(struct v4l2_async_notifier *notifier, struct v4l2_async_subdev *asd; struct v4l2_subdev *sd; - list_for_each_entry(asd, &notifier->waiting, list) + list_for_each_entry(asd, &notifier->waiting_list, waiting_entry) if (v4l2_async_match_equal(&asd->match, match)) return true; - list_for_each_entry(sd, &notifier->done, async_list) { + list_for_each_entry(sd, &notifier->done_list, async_list) { if (WARN_ON(!sd->asd)) continue; @@ -533,7 +533,7 @@ v4l2_async_nf_has_async_match(struct v4l2_async_notifier *notifier, lockdep_assert_held(&list_lock); /* Check that an asd is not being added more than once. */ - list_for_each_entry(asd, &notifier->asd_list, asd_list) { + list_for_each_entry(asd, &notifier->asd_list, asd_entry) { if (skip_self && &asd->match == match) break; if (v4l2_async_match_equal(&asd->match, match)) @@ -541,7 +541,7 @@ v4l2_async_nf_has_async_match(struct v4l2_async_notifier *notifier, } /* Check that an asd does not exist in other notifiers. */ - list_for_each_entry(notifier, &notifier_list, list) + list_for_each_entry(notifier, &notifier_list, notifier_entry) if (v4l2_async_nf_has_async_match_entry(notifier, match)) return true; @@ -583,17 +583,17 @@ static int __v4l2_async_nf_register(struct v4l2_async_notifier *notifier) struct v4l2_async_subdev *asd; int ret; - INIT_LIST_HEAD(&notifier->waiting); - INIT_LIST_HEAD(&notifier->done); + INIT_LIST_HEAD(&notifier->waiting_list); + INIT_LIST_HEAD(&notifier->done_list); mutex_lock(&list_lock); - list_for_each_entry(asd, &notifier->asd_list, asd_list) { + list_for_each_entry(asd, &notifier->asd_list, asd_entry) { ret = v4l2_async_nf_match_valid(notifier, &asd->match, true); if (ret) goto err_unlock; - list_add_tail(&asd->list, &notifier->waiting); + list_add_tail(&asd->waiting_entry, &notifier->waiting_list); } ret = v4l2_async_nf_try_all_subdevs(notifier); @@ -605,7 +605,7 @@ static int __v4l2_async_nf_register(struct v4l2_async_notifier *notifier) goto err_unbind; /* Keep also completed notifiers on the list */ - list_add(&notifier->list, &notifier_list); + list_add(&notifier->notifier_entry, &notifier_list); mutex_unlock(&list_lock); @@ -670,7 +670,7 @@ __v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier) notifier->sd = NULL; notifier->v4l2_dev = NULL; - list_del(&notifier->list); + list_del(&notifier->notifier_entry); } void v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier) @@ -690,7 +690,7 @@ static void __v4l2_async_nf_cleanup(struct v4l2_async_notifier *notifier) if (!notifier || !notifier->asd_list.next) return; - list_for_each_entry_safe(asd, tmp, &notifier->asd_list, asd_list) { + list_for_each_entry_safe(asd, tmp, &notifier->asd_list, asd_entry) { switch (asd->match.type) { case V4L2_ASYNC_MATCH_TYPE_FWNODE: fwnode_handle_put(asd->match.fwnode); @@ -699,7 +699,7 @@ static void __v4l2_async_nf_cleanup(struct v4l2_async_notifier *notifier) break; } - list_del(&asd->asd_list); + list_del(&asd->asd_entry); v4l2_async_nf_call_destroy(notifier, asd); kfree(asd); } @@ -727,7 +727,7 @@ static int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier, if (ret) goto unlock; - list_add_tail(&asd->asd_list, &notifier->asd_list); + list_add_tail(&asd->asd_entry, &notifier->asd_list); unlock: mutex_unlock(&list_lock); @@ -823,7 +823,7 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd) mutex_lock(&list_lock); - list_for_each_entry(notifier, &notifier_list, list) { + list_for_each_entry(notifier, &notifier_list, notifier_entry) { struct v4l2_device *v4l2_dev = v4l2_async_nf_find_v4l2_dev(notifier); struct v4l2_async_subdev *asd; @@ -890,7 +890,7 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd) if (sd->asd) { struct v4l2_async_notifier *notifier = sd->notifier; - list_add(&sd->asd->list, &notifier->waiting); + list_add(&sd->asd->waiting_entry, &notifier->waiting_list); v4l2_async_nf_call_unbind(notifier, sd, sd->asd); } @@ -944,9 +944,9 @@ static int pending_subdevs_show(struct seq_file *s, void *data) mutex_lock(&list_lock); - list_for_each_entry(notif, &notifier_list, list) { + list_for_each_entry(notif, &notifier_list, notifier_entry) { seq_printf(s, "%s:\n", v4l2_async_nf_name(notif)); - list_for_each_entry(asd, &notif->waiting, list) + list_for_each_entry(asd, &notif->waiting_list, waiting_entry) print_waiting_match(s, &asd->match); } diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c index 2f1aff7e87170..350871f34f7cc 100644 --- a/drivers/staging/media/tegra-video/vi.c +++ b/drivers/staging/media/tegra-video/vi.c @@ -1565,7 +1565,7 @@ tegra_vi_graph_find_entity(struct tegra_vi_channel *chan, struct tegra_vi_graph_entity *entity; struct v4l2_async_subdev *asd; - list_for_each_entry(asd, &chan->notifier.asd_list, asd_list) { + list_for_each_entry(asd, &chan->notifier.asd_list, asd_entry) { entity = to_tegra_vi_graph_entity(asd); if (entity->asd.match.fwnode == fwnode) return entity; @@ -1709,7 +1709,7 @@ static int tegra_vi_graph_notify_complete(struct v4l2_async_notifier *notifier) } /* create links between the entities */ - list_for_each_entry(asd, &chan->notifier.asd_list, asd_list) { + list_for_each_entry(asd, &chan->notifier.asd_list, asd_entry) { entity = to_tegra_vi_graph_entity(asd); ret = tegra_vi_graph_build(chan, entity); if (ret < 0) diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index 8d1506a9755c3..54f9f45ed3d8e 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -65,10 +65,10 @@ struct v4l2_async_match_desc { * struct v4l2_async_subdev - sub-device descriptor, as known to a bridge * * @match: struct of match type and per-bus type matching data sets - * @asd_list: used to add struct v4l2_async_subdev objects to the - * master notifier @asd_list - * @list: used to link struct v4l2_async_subdev objects, waiting to be - * probed, to a notifier->waiting list + * @asd_entry: used to add struct v4l2_async_subdev objects to the + * master notifier @asd_entry + * @waiting_entry: used to link struct v4l2_async_subdev objects, waiting to be + * probed, to a notifier->waiting_list list * * When this struct is used as a member in a driver specific struct, * the driver specific struct shall contain the &struct @@ -76,8 +76,8 @@ struct v4l2_async_match_desc { */ struct v4l2_async_subdev { struct v4l2_async_match_desc match; - struct list_head list; - struct list_head asd_list; + struct list_head asd_entry; + struct list_head waiting_entry; }; /** @@ -107,9 +107,9 @@ struct v4l2_async_notifier_operations { * @sd: sub-device that registered the notifier, NULL otherwise * @parent: parent notifier * @asd_list: master list of struct v4l2_async_subdev - * @waiting: list of struct v4l2_async_subdev, waiting for their drivers - * @done: list of struct v4l2_subdev, already probed - * @list: member in a global list of notifiers + * @waiting_list: list of struct v4l2_async_subdev, waiting for their drivers + * @done_list: list of struct v4l2_subdev, already probed + * @notifier_entry: member in a global list of notifiers */ struct v4l2_async_notifier { const struct v4l2_async_notifier_operations *ops; @@ -117,9 +117,9 @@ struct v4l2_async_notifier { struct v4l2_subdev *sd; struct v4l2_async_notifier *parent; struct list_head asd_list; - struct list_head waiting; - struct list_head done; - struct list_head list; + struct list_head waiting_list; + struct list_head done_list; + struct list_head notifier_entry; }; /** @@ -134,7 +134,7 @@ void v4l2_async_debug_init(struct dentry *debugfs_dir); * * @notifier: pointer to &struct v4l2_async_notifier * - * This function initializes the notifier @asd_list. It must be called + * This function initializes the notifier @asd_entry. It must be called * before adding a subdevice to a notifier, using one of: * v4l2_async_nf_add_fwnode_remote(), v4l2_async_nf_add_fwnode() or * v4l2_async_nf_add_i2c(). @@ -147,7 +147,7 @@ __v4l2_async_nf_add_fwnode(struct v4l2_async_notifier *notifier, unsigned int asd_struct_size); /** * v4l2_async_nf_add_fwnode - Allocate and add a fwnode async - * subdev to the notifier's master asd_list. + * subdev to the notifier's master asd_entry. * * @notifier: pointer to &struct v4l2_async_notifier * @fwnode: fwnode handle of the sub-device to be matched, pointer to @@ -157,7 +157,7 @@ __v4l2_async_nf_add_fwnode(struct v4l2_async_notifier *notifier, * sub-device struct, i.e. both begin at the same memory address. * * Allocate a fwnode-matched asd of size asd_struct_size, and add it to the - * notifiers @asd_list. The function also gets a reference of the fwnode which + * notifiers @asd_entry. The function also gets a reference of the fwnode which * is released later at notifier cleanup time. */ #define v4l2_async_nf_add_fwnode(notifier, fwnode, type) \ @@ -170,7 +170,7 @@ __v4l2_async_nf_add_fwnode_remote(struct v4l2_async_notifier *notif, /** * v4l2_async_nf_add_fwnode_remote - Allocate and add a fwnode * remote async subdev to the - * notifier's master asd_list. + * notifier's master asd_entry. * * @notifier: pointer to &struct v4l2_async_notifier * @ep: local endpoint pointing to the remote sub-device to be matched, @@ -180,7 +180,7 @@ __v4l2_async_nf_add_fwnode_remote(struct v4l2_async_notifier *notif, * sub-device struct, i.e. both begin at the same memory address. * * Gets the remote endpoint of a given local endpoint, set it up for fwnode - * matching and adds the async sub-device to the notifier's @asd_list. The + * matching and adds the async sub-device to the notifier's @asd_entry. The * function also gets a reference of the fwnode which is released later at * notifier cleanup time. * @@ -196,7 +196,7 @@ __v4l2_async_nf_add_i2c(struct v4l2_async_notifier *notifier, unsigned int asd_struct_size); /** * v4l2_async_nf_add_i2c - Allocate and add an i2c async - * subdev to the notifier's master asd_list. + * subdev to the notifier's master asd_entry. * * @notifier: pointer to &struct v4l2_async_notifier * @adapter: I2C adapter ID to be matched diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index cfd19e72d0fc4..82e4cf3dd2e05 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1020,7 +1020,7 @@ struct v4l2_subdev_platform_data { * @dev: pointer to the physical device, if any * @fwnode: The fwnode_handle of the subdev, usually the same as * either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL). - * @async_list: Links this subdev to a global subdev_list or @notifier->done + * @async_list: Links this subdev to a global subdev_entry or @notifier->done * list. * @asd: Pointer to respective &struct v4l2_async_subdev. * @notifier: Pointer to the managing notifier.

[v3,12/32] media: v4l: async: Clean up list heads and entries

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Patch