* [usb:usb-next 27/33] drivers/usb/core/../misc/onboard_usb_hub_pdevs.c:65:6: warning: no previous prototype for 'onboard_hub_create_pdevs'
@ 2022-07-10 6:27 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-07-10 6:27 UTC (permalink / raw)
To: Matthias Kaehlcke
Cc: kbuild-all, linux-usb, Greg Kroah-Hartman, Douglas Anderson,
Ravi Chandra Sadineni
tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next
head: 8affe37c525d800a2628c4ecfaed13b77dc5634a
commit: 8bc063641cebf9d555e41d135db2b5035b521768 [27/33] usb: misc: Add onboard_usb_hub driver
config: ia64-allyesconfig (https://download.01.org/0day-ci/archive/20220710/202207101421.kHbwWznT-lkp@intel.com/config)
compiler: ia64-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?id=8bc063641cebf9d555e41d135db2b5035b521768
git remote add usb https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
git fetch --no-tags usb usb-next
git checkout 8bc063641cebf9d555e41d135db2b5035b521768
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/usb/ sound/soc/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/usb/core/../misc/onboard_usb_hub_pdevs.c:65:6: warning: no previous prototype for 'onboard_hub_create_pdevs' [-Wmissing-prototypes]
65 | void onboard_hub_create_pdevs(struct usb_device *parent_hub, struct list_head *pdev_list)
| ^~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/core/../misc/onboard_usb_hub_pdevs.c:132:6: warning: no previous prototype for 'onboard_hub_destroy_pdevs' [-Wmissing-prototypes]
132 | void onboard_hub_destroy_pdevs(struct list_head *pdev_list)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
vim +/onboard_hub_create_pdevs +65 drivers/usb/core/../misc/onboard_usb_hub_pdevs.c
30
31 /**
32 * onboard_hub_create_pdevs -- create platform devices for onboard USB hubs
33 * @parent_hub : parent hub to scan for connected onboard hubs
34 * @pdev_list : list of onboard hub platform devices owned by the parent hub
35 *
36 * Creates a platform device for each supported onboard hub that is connected to
37 * the given parent hub. The platform device is in charge of initializing the
38 * hub (enable regulators, take the hub out of reset, ...) and can optionally
39 * control whether the hub remains powered during system suspend or not.
40 *
41 * To keep track of the platform devices they are added to a list that is owned
42 * by the parent hub.
43 *
44 * Some background about the logic in this function, which can be a bit hard
45 * to follow:
46 *
47 * Root hubs don't have dedicated device tree nodes, but use the node of their
48 * HCD. The primary and secondary HCD are usually represented by a single DT
49 * node. That means the root hubs of the primary and secondary HCD share the
50 * same device tree node (the HCD node). As a result this function can be called
51 * twice with the same DT node for root hubs. We only want to create a single
52 * platform device for each physical onboard hub, hence for root hubs the loop
53 * is only executed for the root hub of the primary HCD. Since the function
54 * scans through all child nodes it still creates pdevs for onboard hubs
55 * connected to the root hub of the secondary HCD if needed.
56 *
57 * Further there must be only one platform device for onboard hubs with a peer
58 * hub (the hub is a single physical device). To achieve this two measures are
59 * taken: pdevs for onboard hubs with a peer are only created when the function
60 * is called on behalf of the parent hub that is connected to the primary HCD
61 * (directly or through other hubs). For onboard hubs connected to root hubs
62 * the function processes the nodes of both peers. A platform device is only
63 * created if the peer hub doesn't have one already.
64 */
> 65 void onboard_hub_create_pdevs(struct usb_device *parent_hub, struct list_head *pdev_list)
66 {
67 int i;
68 struct usb_hcd *hcd = bus_to_hcd(parent_hub->bus);
69 struct device_node *np, *npc;
70 struct platform_device *pdev;
71 struct pdev_list_entry *pdle;
72
73 if (!parent_hub->dev.of_node)
74 return;
75
76 if (!parent_hub->parent && !usb_hcd_is_primary_hcd(hcd))
77 return;
78
79 for (i = 1; i <= parent_hub->maxchild; i++) {
80 np = usb_of_get_device_node(parent_hub, i);
81 if (!np)
82 continue;
83
84 if (!of_is_onboard_usb_hub(np))
85 goto node_put;
86
87 npc = of_parse_phandle(np, "peer-hub", 0);
88 if (npc) {
89 if (!usb_hcd_is_primary_hcd(hcd)) {
90 of_node_put(npc);
91 goto node_put;
92 }
93
94 pdev = of_find_device_by_node(npc);
95 of_node_put(npc);
96
97 if (pdev) {
98 put_device(&pdev->dev);
99 goto node_put;
100 }
101 }
102
103 pdev = of_platform_device_create(np, NULL, &parent_hub->dev);
104 if (!pdev) {
105 dev_err(&parent_hub->dev,
106 "failed to create platform device for onboard hub '%pOF'\n", np);
107 goto node_put;
108 }
109
110 pdle = kzalloc(sizeof(*pdle), GFP_KERNEL);
111 if (!pdle) {
112 of_platform_device_destroy(&pdev->dev, NULL);
113 goto node_put;
114 }
115
116 pdle->pdev = pdev;
117 list_add(&pdle->node, pdev_list);
118
119 node_put:
120 of_node_put(np);
121 }
122 }
123 EXPORT_SYMBOL_GPL(onboard_hub_create_pdevs);
124
125 /**
126 * onboard_hub_destroy_pdevs -- free resources of onboard hub platform devices
127 * @pdev_list : list of onboard hub platform devices
128 *
129 * Destroys the platform devices in the given list and frees the memory associated
130 * with the list entry.
131 */
> 132 void onboard_hub_destroy_pdevs(struct list_head *pdev_list)
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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