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Diffstat (limited to 'kernel/drivers/usb/gadget/legacy/serial.c')
-rw-r--r--kernel/drivers/usb/gadget/legacy/serial.c38
1 files changed, 21 insertions, 17 deletions
diff --git a/kernel/drivers/usb/gadget/legacy/serial.c b/kernel/drivers/usb/gadget/legacy/serial.c
index 8b7528f9b..c5d42e034 100644
--- a/kernel/drivers/usb/gadget/legacy/serial.c
+++ b/kernel/drivers/usb/gadget/legacy/serial.c
@@ -17,7 +17,6 @@
#include <linux/tty_flip.h>
#include "u_serial.h"
-#include "gadget_chips.h"
/* Defines */
@@ -79,20 +78,7 @@ static struct usb_device_descriptor device_desc = {
.bNumConfigurations = 1,
};
-static struct usb_otg_descriptor otg_descriptor = {
- .bLength = sizeof otg_descriptor,
- .bDescriptorType = USB_DT_OTG,
-
- /* REVISIT SRP-only hardware is possible, although
- * it would not be called "OTG" ...
- */
- .bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
-};
-
-static const struct usb_descriptor_header *otg_desc[] = {
- (struct usb_descriptor_header *) &otg_descriptor,
- NULL,
-};
+static const struct usb_descriptor_header *otg_desc[2];
/*-------------------------------------------------------------------------*/
@@ -191,6 +177,18 @@ static int gs_bind(struct usb_composite_dev *cdev)
serial_config_driver.iConfiguration = status;
if (gadget_is_otg(cdev->gadget)) {
+ if (!otg_desc[0]) {
+ struct usb_descriptor_header *usb_desc;
+
+ usb_desc = usb_otg_descriptor_alloc(cdev->gadget);
+ if (!usb_desc) {
+ status = -ENOMEM;
+ goto fail;
+ }
+ usb_otg_descriptor_init(cdev->gadget, usb_desc);
+ otg_desc[0] = usb_desc;
+ otg_desc[1] = NULL;
+ }
serial_config_driver.descriptors = otg_desc;
serial_config_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
@@ -208,13 +206,15 @@ static int gs_bind(struct usb_composite_dev *cdev)
"gser");
}
if (status < 0)
- goto fail;
+ goto fail1;
usb_composite_overwrite_options(cdev, &coverwrite);
INFO(cdev, "%s\n", GS_VERSION_NAME);
return 0;
-
+fail1:
+ kfree(otg_desc[0]);
+ otg_desc[0] = NULL;
fail:
return status;
}
@@ -227,6 +227,10 @@ static int gs_unbind(struct usb_composite_dev *cdev)
usb_put_function(f_serial[i]);
usb_put_function_instance(fi_serial[i]);
}
+
+ kfree(otg_desc[0]);
+ otg_desc[0] = NULL;
+
return 0;
}