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ANDROID: usb: gadget: configfs: fix compiler warning

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Commit 7a160e2b96 ("ANDROID: usb: gadget: configfs: Add Uevent to
notify userspace") introduces android_setup and android_disconnect
as alternatives to configfs_composite_setup and
configfs_composite_disconnect in case CONFIG_USB_CONFIGFS_UEVENT is set.
In case this config is set and in the presence of commit 1a1c851bbd
("usb: gadget: configfs: fix concurrent issue between composite APIs"),
the configfs_* functions are unused and therefore compilers complain
about that, e.g.

common/drivers/usb/gadget/configfs.c:1486:12: warning: unused function 'configfs_composite_setup' [-Wunused-function]

Fix that by conditionally compiling these functions.

Bug: 144674477
Fixes: 7a160e2b96 ("ANDROID: usb: gadget: configfs: Add Uevent to notify userspace")
Fixes: 1a1c851bbd ("usb: gadget: configfs: fix concurrent issue between composite APIs")
Change-Id: Idb6bb726d676d0d03b920375fd48fba41b60bb2d
Cc: Badhri Jagan Sridharan <Badhri@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
This commit is contained in:
Matthias Maennich
2019-11-20 11:09:32 +00:00
parent 1026fb2f81
commit 43e98b082f
1 changed files with 95 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

187
drivers/usb/gadget/configfs.c
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@@ -1483,97 +1483,6 @@ static void configfs_composite_unbind(struct usb_gadget *gadget)
spin_unlock_irqrestore(&gi->spinlock, flags);
}
static int configfs_composite_setup(struct usb_gadget *gadget,
const struct usb_ctrlrequest *ctrl)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
int ret;
cdev = get_gadget_data(gadget);
if (!cdev)
return 0;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return 0;
}
ret = composite_setup(gadget, ctrl);
spin_unlock_irqrestore(&gi->spinlock, flags);
return ret;
}
static void configfs_composite_disconnect(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
cdev = get_gadget_data(gadget);
if (!cdev)
return;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return;
}
composite_disconnect(gadget);
spin_unlock_irqrestore(&gi->spinlock, flags);
}
static void configfs_composite_suspend(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
cdev = get_gadget_data(gadget);
if (!cdev)
return;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return;
}
composite_suspend(gadget);
spin_unlock_irqrestore(&gi->spinlock, flags);
}
static void configfs_composite_resume(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
cdev = get_gadget_data(gadget);
if (!cdev)
return;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return;
}
composite_resume(gadget);
spin_unlock_irqrestore(&gi->spinlock, flags);
}
#ifdef CONFIG_USB_CONFIGFS_UEVENT
static int android_setup(struct usb_gadget *gadget,
const struct usb_ctrlrequest *c)
@@ -1645,7 +1554,101 @@ static void android_disconnect(struct usb_gadget *gadget)
schedule_work(&gi->work);
composite_disconnect(gadget);
}
#endif
#else // CONFIG_USB_CONFIGFS_UEVENT
static int configfs_composite_setup(struct usb_gadget *gadget,
const struct usb_ctrlrequest *ctrl)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
int ret;
cdev = get_gadget_data(gadget);
if (!cdev)
return 0;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return 0;
}
ret = composite_setup(gadget, ctrl);
spin_unlock_irqrestore(&gi->spinlock, flags);
return ret;
}
static void configfs_composite_disconnect(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
cdev = get_gadget_data(gadget);
if (!cdev)
return;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return;
}
composite_disconnect(gadget);
spin_unlock_irqrestore(&gi->spinlock, flags);
}
#endif // CONFIG_USB_CONFIGFS_UEVENT
static void configfs_composite_suspend(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
cdev = get_gadget_data(gadget);
if (!cdev)
return;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return;
}
composite_suspend(gadget);
spin_unlock_irqrestore(&gi->spinlock, flags);
}
static void configfs_composite_resume(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
struct gadget_info *gi;
unsigned long flags;
cdev = get_gadget_data(gadget);
if (!cdev)
return;
gi = container_of(cdev, struct gadget_info, cdev);
spin_lock_irqsave(&gi->spinlock, flags);
cdev = get_gadget_data(gadget);
if (!cdev || gi->unbind) {
spin_unlock_irqrestore(&gi->spinlock, flags);
return;
}
composite_resume(gadget);
spin_unlock_irqrestore(&gi->spinlock, flags);
}
static const struct usb_gadget_driver configfs_driver_template = {
.bind = configfs_composite_bind,