lkml.org 
[lkml]   [2015]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 09/29] usb: gadget: composite: handle vendor descs
Date
After binding all configurations in gadget, call prep_vendor_descs()
for each function which uses new API and implements this callback.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---
drivers/usb/gadget/composite.c | 31 +++++++++++++++++++++++++++++++
include/linux/usb/composite.h | 2 ++
2 files changed, 33 insertions(+)

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index f4189b1..9b4fcfe 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -2566,6 +2566,33 @@ int usb_config_do_bind(struct usb_configuration *c)
}
EXPORT_SYMBOL_GPL(usb_config_do_bind);

+/**
+ * composite_prep_vendor_descs - for each function in each configuration call
+ * prep_vendor_descs() callback.
+ * @cdev: composite device
+ */
+int composite_prep_vendor_descs(struct usb_composite_dev *cdev)
+{
+ struct usb_configuration *c;
+ struct usb_function *f;
+ int ret;
+
+ list_for_each_entry(c, &cdev->configs, list)
+ list_for_each_entry(f, &c->functions, list) {
+ if (!usb_function_is_new_api(f))
+ continue;
+ if (f->prep_vendor_descs) {
+ ret = f->prep_vendor_descs(f);
+ if (ret)
+ return ret;
+ }
+
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(composite_prep_vendor_descs);
+
static int composite_bind(struct usb_gadget *gadget,
struct usb_gadget_driver *gdriver)
{
@@ -2595,6 +2622,10 @@ static int composite_bind(struct usb_gadget *gadget,
if (status < 0)
goto fail;

+ status = composite_prep_vendor_descs(cdev);
+ if (status < 0)
+ goto fail;
+
if (cdev->use_os_string) {
status = composite_os_desc_req_prepare(cdev, gadget->ep0);
if (status)
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index a92da38..dc0ac28c 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -592,6 +592,8 @@ extern int composite_os_desc_req_prepare(struct usb_composite_dev *cdev,
struct usb_ep *ep0);
void composite_dev_cleanup(struct usb_composite_dev *cdev);

+int composite_prep_vendor_descs(struct usb_composite_dev *cdev);
+
void composite_free_descs(struct usb_composite_dev *cdev);
void composite_free_vendor_descs(struct usb_composite_dev *cdev);

--
1.9.1


\
 
 \ /
  Last update: 2015-11-27 12:21    [W:0.213 / U:0.572 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site