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usb: interface authorization: Use a flag for the default device authorization

Browse source 
With this patch a flag instead of a variable
is used for the default device authorization.

Signed-off-by: Stefan Koch <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Stefan Koch 2015-08-08 11:32:56 +02:00 • committed by Greg Kroah-Hartman
commit 3cf1fc8065
3 changed files with 31 additions and 18 deletions
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31
drivers/usb/core/hcd.c
View file

@ -854,10 +854,10 @@ static ssize_t authorized_default_show(struct device *dev,
{
struct usb_device *rh_usb_dev = to_usb_device(dev);
struct usb_bus *usb_bus = rh_usb_dev->bus;
struct usb_hcd *usb_hcd;
struct usb_hcd *hcd;
usb_hcd = bus_to_hcd(usb_bus);
return snprintf(buf, PAGE_SIZE, "%u\n", usb_hcd->authorized_default);
hcd = bus_to_hcd(usb_bus);
return snprintf(buf, PAGE_SIZE, "%u\n", !!HCD_DEV_AUTHORIZED(hcd));
}
static ssize_t authorized_default_store(struct device *dev,
@ -868,12 +868,16 @@ static ssize_t authorized_default_store(struct device *dev,
unsigned val;
struct usb_device *rh_usb_dev = to_usb_device(dev);
struct usb_bus *usb_bus = rh_usb_dev->bus;
struct usb_hcd *usb_hcd;
struct usb_hcd *hcd;
usb_hcd = bus_to_hcd(usb_bus);
hcd = bus_to_hcd(usb_bus);
result = sscanf(buf, "%u\n", &val);
if (result == 1) {
usb_hcd->authorized_default = val ? 1 : 0;
if (val)
set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
else
clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
result = size;
} else {
result = -EINVAL;
@ -2720,10 +2724,17 @@ int usb_add_hcd(struct usb_hcd *hcd,
dev_info(hcd->self.controller, "%s\n", hcd->product_desc);
/* Keep old behaviour if authorized_default is not in [0, 1]. */
if (authorized_default < 0 || authorized_default > 1)
hcd->authorized_default = hcd->wireless ? 0 : 1;
else
hcd->authorized_default = authorized_default;
if (authorized_default < 0 || authorized_default > 1) {
if (hcd->wireless)
clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
else
set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
} else {
if (authorized_default)
set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
else
clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
}
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
/* per default all interfaces are authorized */

2
drivers/usb/core/usb.c
View file

@ -510,7 +510,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
if (root_hub) /* Root hub always ok [and always wired] */
dev->authorized = 1;
else {
dev->authorized = usb_hcd->authorized_default;
dev->authorized = !!HCD_DEV_AUTHORIZED(usb_hcd);
dev->wusb = usb_bus_is_wusb(bus) ? 1 : 0;
}
return dev;