This patch pushes the iManufacturer module argument from composite into
each gadget. Once the user uses the module paramter, the string is
overwritten with the final value.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/usb/gadget/composite.c | 20 +++++++++++---------
include/linux/usb/composite.h | 7 ++++++-
2 files changed, 17 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index ee657f6..699de9c 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -32,10 +32,6 @@
* published in the device descriptor, either numbers or strings or both.
* String parameters are in UTF-8 (superset of ASCII's 7 bit characters).
*/
-static char *iManufacturer;
-module_param(iManufacturer, charp, S_IRUGO);
-MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string");
-
static char *iProduct;
module_param(iProduct, charp, S_IRUGO);
MODULE_PARM_DESC(iProduct, "USB Product string");
@@ -916,8 +912,7 @@ static int get_string(struct usb_composite_dev *cdev,
* check if the string has not been overridden.
*/
if (cdev->manufacturer_override == id)
- str = iManufacturer ?: cdriver->iManufacturer ?:
- composite_manufacturer;
+ str = cdriver->iManufacturer ?: composite_manufacturer;
else if (cdev->product_override == id)
str = iProduct ?: cdriver->iProduct;
else if (cdev->serial_override == id)
@@ -1408,6 +1403,7 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
__le16 idProduct;
__le16 bcdDevice;
u8 iSerialNumber;
+ u8 iManufacturer;
/*
* these variables may have been set in
@@ -1417,6 +1413,7 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
idProduct = new->idProduct;
bcdDevice = new->bcdDevice;
iSerialNumber = new->iSerialNumber;
+ iManufacturer = new->iManufacturer;
*new = *old;
if (idVendor)
@@ -1427,6 +1424,8 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
new->bcdDevice = bcdDevice;
if (iSerialNumber)
new->iSerialNumber = iSerialNumber;
+ if (iManufacturer)
+ new->iManufacturer = iManufacturer;
}
static struct usb_composite_driver *to_cdriver(struct usb_gadget_driver *gdrv)
@@ -1487,9 +1486,8 @@ static int composite_bind(struct usb_gadget *gadget,
update_unchanged_dev_desc(&cdev->desc, cdriver->dev);
/* string overrides */
- if (iManufacturer || !cdev->desc.iManufacturer) {
- if (!iManufacturer && !cdriver->iManufacturer &&
- !*composite_manufacturer)
+ if (!cdev->desc.iManufacturer) {
+ if (!cdriver->iManufacturer)
snprintf(composite_manufacturer,
sizeof composite_manufacturer,
"%s %s with %s",
@@ -1713,4 +1711,8 @@ void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
desc->iSerialNumber = dev_str[USB_GADGET_SERIAL_IDX].id;
dev_str[USB_GADGET_SERIAL_IDX].s = covr->serial_number;
}
+ if (covr->manufacturer) {
+ desc->iManufacturer = dev_str[USB_GADGET_MANUFACTURER_IDX].id;
+ dev_str[USB_GADGET_MANUFACTURER_IDX].s = covr->manufacturer;
+ }
}
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 9d068a4..86553c8 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -401,6 +401,7 @@ struct usb_composite_overwrite {
u16 idProduct;
u16 bcdDevice;
char *serial_number;
+ char *manufacturer;
};
#define USB_GADGET_COMPOSITE_OPTIONS() \
static struct usb_composite_overwrite coverwrite; \
@@ -416,7 +417,11 @@ struct usb_composite_overwrite {
\
module_param_named(iSerialNumber, coverwrite.serial_number, charp, \
S_IRUGO); \
- MODULE_PARM_DESC(iSerialNumber, "SerialNumber string")
+ MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); \
+ \
+ module_param_named(iManufacturer, coverwrite.manufacturer, charp, \
+ S_IRUGO); \
+ MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string")
void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
struct usb_composite_overwrite *covr);
--
1.7.10.4
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