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usb: gadget: push iSerialNumber into gadgets

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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>
This commit is contained in:
Sebastian Andrzej Siewior
2012-09-10 15:01:54 +02:00
committed by Felipe Balbi
vanhempi 276e2e4f1f
commit 1cf0d26408
4 muutettua tiedostoa jossa 41 lisäystä ja 13 poistoa
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20
drivers/usb/gadget/composite.c
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@@ -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;
}
}