aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/wusbcore
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/wusbcore')
-rw-r--r--drivers/usb/wusbcore/Kconfig2
-rw-r--r--drivers/usb/wusbcore/crypto.c2
-rw-r--r--drivers/usb/wusbcore/devconnect.c6
-rw-r--r--drivers/usb/wusbcore/security.c17
-rw-r--r--drivers/usb/wusbcore/wa-hc.h2
-rw-r--r--drivers/usb/wusbcore/wa-xfer.c17
-rw-r--r--drivers/usb/wusbcore/wusbhc.h3
7 files changed, 38 insertions, 11 deletions
diff --git a/drivers/usb/wusbcore/Kconfig b/drivers/usb/wusbcore/Kconfig
index 0e17b966e1b4..348de1d6726e 100644
--- a/drivers/usb/wusbcore/Kconfig
+++ b/drivers/usb/wusbcore/Kconfig
@@ -3,7 +3,6 @@
#
config USB_WUSB
tristate "Enable Wireless USB extensions"
- depends on PCI
depends on UWB
select CRYPTO
select CRYPTO_BLKCIPHER
@@ -18,6 +17,7 @@ config USB_WUSB
config USB_WUSB_CBAF
tristate "Support WUSB Cable Based Association (CBA)"
+ depends on USB
help
Some WUSB devices support Cable Based Association. It's used to
enable the secure communication between the host and the
diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c
index 9a95b2dc6d1b..50ce80d604f3 100644
--- a/drivers/usb/wusbcore/crypto.c
+++ b/drivers/usb/wusbcore/crypto.c
@@ -222,8 +222,6 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
WARN_ON(sizeof(ax) != sizeof(struct aes_ccm_block));
result = -ENOMEM;
- zero_padding = sizeof(struct aes_ccm_block)
- - blen % sizeof(struct aes_ccm_block);
zero_padding = blen % sizeof(struct aes_ccm_block);
if (zero_padding)
zero_padding = sizeof(struct aes_ccm_block) - zero_padding;
diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c
index 0677139c6065..3f4f5fbded55 100644
--- a/drivers/usb/wusbcore/devconnect.c
+++ b/drivers/usb/wusbcore/devconnect.c
@@ -329,7 +329,7 @@ void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc,
port->wusb_dev = wusb_dev;
port->status |= USB_PORT_STAT_CONNECTION;
port->change |= USB_PORT_STAT_C_CONNECTION;
- /* Now the port status changed to connected; khubd will
+ /* Now the port status changed to connected; hub_wq will
* pick the change up and try to reset the port to bring it to
* the enabled state--so this process returns up to the stack
* and it calls back into wusbhc_rh_port_reset().
@@ -343,7 +343,7 @@ error_unlock:
/*
* Disconnect a Wireless USB device from its fake port
*
- * Marks the port as disconnected so that khubd can pick up the change
+ * Marks the port as disconnected so that hub_wq can pick up the change
* and drops our knowledge about the device.
*
* Assumes there is a device connected
@@ -379,7 +379,7 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
wusbhc_gtk_rekey(wusbhc);
/* The Wireless USB part has forgotten about the device already; now
- * khubd's timer will pick up the disconnection and remove the USB
+ * hub_wq's timer will pick up the disconnection and remove the USB
* device from the system
*/
}
diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c
index 95be9953cd47..cc74d669c802 100644
--- a/drivers/usb/wusbcore/security.c
+++ b/drivers/usb/wusbcore/security.c
@@ -33,6 +33,20 @@ static void wusbhc_gtk_rekey_work(struct work_struct *work);
int wusbhc_sec_create(struct wusbhc *wusbhc)
{
+ /*
+ * WQ is singlethread because we need to serialize rekey operations.
+ * Use a separate workqueue for security operations instead of the
+ * wusbd workqueue because security operations may need to communicate
+ * directly with downstream wireless devices using synchronous URBs.
+ * If a device is not responding, this could block other host
+ * controller operations.
+ */
+ wusbhc->wq_security = create_singlethread_workqueue("wusbd_security");
+ if (wusbhc->wq_security == NULL) {
+ pr_err("WUSB-core: Cannot create wusbd_security workqueue\n");
+ return -ENOMEM;
+ }
+
wusbhc->gtk.descr.bLength = sizeof(wusbhc->gtk.descr) +
sizeof(wusbhc->gtk.data);
wusbhc->gtk.descr.bDescriptorType = USB_DT_KEY;
@@ -48,6 +62,7 @@ int wusbhc_sec_create(struct wusbhc *wusbhc)
/* Called when the HC is destroyed */
void wusbhc_sec_destroy(struct wusbhc *wusbhc)
{
+ destroy_workqueue(wusbhc->wq_security);
}
@@ -596,5 +611,5 @@ void wusbhc_gtk_rekey(struct wusbhc *wusbhc)
* and will cause a deadlock. Instead, queue a work item to do
* it when the lock is not held
*/
- queue_work(wusbd, &wusbhc->gtk_rekey_work);
+ queue_work(wusbhc->wq_security, &wusbhc->gtk_rekey_work);
}
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
index f2a8d29e17b9..edc7267157f3 100644
--- a/drivers/usb/wusbcore/wa-hc.h
+++ b/drivers/usb/wusbcore/wa-hc.h
@@ -64,7 +64,7 @@
*
* Note much of the activity is difficult to follow. For example a
* device connect goes to devconnect, which will cause the "fake" root
- * hub port to show a connect and stop there. Then khubd will notice
+ * hub port to show a connect and stop there. Then hub_wq will notice
* and call into the rh.c:hwahc_rc_port_reset() code to authenticate
* the device (and this might require user intervention) and enable
* the port.
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index e279015be466..69af4fd9e072 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -459,14 +459,25 @@ static void __wa_xfer_abort_cb(struct urb *urb)
__func__, urb->status);
if (xfer) {
unsigned long flags;
- int done;
+ int done, seg_index = 0;
struct wa_rpipe *rpipe = xfer->ep->hcpriv;
dev_err(dev, "%s: cleaning up xfer %p ID 0x%08X.\n",
__func__, xfer, wa_xfer_id(xfer));
spin_lock_irqsave(&xfer->lock, flags);
- /* mark all segs as aborted. */
- wa_complete_remaining_xfer_segs(xfer, 0,
+ /* skip done segs. */
+ while (seg_index < xfer->segs) {
+ struct wa_seg *seg = xfer->seg[seg_index];
+
+ if ((seg->status == WA_SEG_DONE) ||
+ (seg->status == WA_SEG_ERROR)) {
+ ++seg_index;
+ } else {
+ break;
+ }
+ }
+ /* mark remaining segs as aborted. */
+ wa_complete_remaining_xfer_segs(xfer, seg_index,
WA_SEG_ABORTED);
done = __wa_xfer_is_done(xfer);
spin_unlock_irqrestore(&xfer->lock, flags);
diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h
index 2384add45371..41838db7f85c 100644
--- a/drivers/usb/wusbcore/wusbhc.h
+++ b/drivers/usb/wusbcore/wusbhc.h
@@ -295,6 +295,9 @@ struct wusbhc {
} __attribute__((packed)) gtk;
u8 gtk_index;
u32 gtk_tkid;
+
+ /* workqueue for WUSB security related tasks. */
+ struct workqueue_struct *wq_security;
struct work_struct gtk_rekey_work;
struct usb_encryption_descriptor *ccm1_etd;