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authorCarl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>2011-05-31 21:31:08 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-06 16:41:47 -0700
commitc4fc2342cb611f945fa468e742759e25984005ad (patch)
tree133ec26407179938857d323f0aa51e75149f19c7 /drivers/usb/core/hcd.c
parent680681747ff933fdedfbf11bd03c369e5b14085c (diff)
downloadlinux-c4fc2342cb611f945fa468e742759e25984005ad.tar.bz2
USB: Add "authorized_default" parameter to the usbcore module
The "authorized_default" module parameter of usbcore controls the default for the authorized_default variable of each USB host controller. -1 is authorized for all devices except wireless (default, old behaviour) 0 is unauthorized for all devices 1 is authorized for all devices Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.c')
-rw-r--r--drivers/usb/core/hcd.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index ace9f8442e5d..8669ba3fe794 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -337,6 +337,17 @@ static const u8 ss_rh_config_descriptor[] = {
0x02, 0x00 /* __le16 ss_wBytesPerInterval; 15 bits for max 15 ports */
};
+/* authorized_default behaviour:
+ * -1 is authorized for all devices except wireless (old behaviour)
+ * 0 is unauthorized for all devices
+ * 1 is authorized for all devices
+ */
+static int authorized_default = -1;
+module_param(authorized_default, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(authorized_default,
+ "Default USB device authorization: 0 is not authorized, 1 is "
+ "authorized, -1 is authorized except for wireless USB (default, "
+ "old behaviour");
/*-------------------------------------------------------------------------*/
/**
@@ -2371,7 +2382,11 @@ int usb_add_hcd(struct usb_hcd *hcd,
dev_info(hcd->self.controller, "%s\n", hcd->product_desc);
- hcd->authorized_default = hcd->wireless? 0 : 1;
+ /* 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;
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
/* HC is in reset state, but accessible. Now do the one-time init,