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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2012-09-10 15:01:54 +0200
committerFelipe Balbi <balbi@ti.com>2012-09-10 16:13:00 +0300
commit1cf0d264088907038be560ba2dd472d5e432a3dc (patch)
treec62973c662c6c43763f672e65d8ae167e39686cc /drivers/usb/gadget/composite.c
parent276e2e4f1f3e07a0ad891bf757dbcfd655ff5f91 (diff)
downloadop-kernel-dev-1cf0d264088907038be560ba2dd472d5e432a3dc.zip
op-kernel-dev-1cf0d264088907038be560ba2dd472d5e432a3dc.tar.gz
usb: gadget: push iSerialNumber into gadgets
This patch pushes the iSerialNumber module argument from composite into each gadget. Once the user uses the module paramter, the string is overwritten with the final value. Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/composite.c')
-rw-r--r--drivers/usb/gadget/composite.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 317a5ec..5642b21 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -40,10 +40,6 @@ static char *iProduct;
module_param(iProduct, charp, S_IRUGO);
MODULE_PARM_DESC(iProduct, "USB Product string");
-static char *iSerialNumber;
-module_param(iSerialNumber, charp, S_IRUGO);
-MODULE_PARM_DESC(iSerialNumber, "SerialNumber string");
-
static char composite_manufacturer[50];
/*-------------------------------------------------------------------------*/
@@ -925,7 +921,7 @@ static int get_string(struct usb_composite_dev *cdev,
else if (cdev->product_override == id)
str = iProduct ?: composite->iProduct;
else if (cdev->serial_override == id)
- str = iSerialNumber ?: composite->iSerialNumber;
+ str = composite->iSerialNumber;
else
str = NULL;
if (str) {
@@ -1411,6 +1407,7 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
__le16 idVendor;
__le16 idProduct;
__le16 bcdDevice;
+ u8 iSerialNumber;
/*
* these variables may have been set in
@@ -1419,6 +1416,7 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
idVendor = new->idVendor;
idProduct = new->idProduct;
bcdDevice = new->bcdDevice;
+ iSerialNumber = new->iSerialNumber;
*new = *old;
if (idVendor)
@@ -1427,6 +1425,8 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
new->idProduct = idProduct;
if (bcdDevice)
new->bcdDevice = bcdDevice;
+ if (iSerialNumber)
+ new->iSerialNumber = iSerialNumber;
}
static struct usb_composite_driver *to_cdriver(struct usb_gadget_driver *gdrv)
@@ -1505,8 +1505,7 @@ static int composite_bind(struct usb_gadget *gadget,
cdev->product_override =
override_id(cdev, &cdev->desc.iProduct);
- if (iSerialNumber ||
- (!cdev->desc.iSerialNumber && composite->iSerialNumber))
+ if (composite->iSerialNumber)
cdev->serial_override =
override_id(cdev, &cdev->desc.iSerialNumber);
@@ -1691,6 +1690,8 @@ void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
struct usb_composite_overwrite *covr)
{
struct usb_device_descriptor *desc = &cdev->desc;
+ struct usb_gadget_strings *gstr = cdev->driver->strings[0];
+ struct usb_string *dev_str = gstr->strings;
if (covr->idVendor)
desc->idVendor = cpu_to_le16(covr->idVendor);
@@ -1700,4 +1701,9 @@ void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
if (covr->bcdDevice)
desc->bcdDevice = cpu_to_le16(covr->bcdDevice);
+
+ if (covr->serial_number) {
+ desc->iSerialNumber = dev_str[USB_GADGET_SERIAL_IDX].id;
+ dev_str[USB_GADGET_SERIAL_IDX].s = covr->serial_number;
+ }
}
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