kernel/linux.git/drivers/usb/wusbcore, branch v3.11.1

wusbcore: fix kernel panic when disconnecting a wireless USB->serial device

2013-08-12T20:45:26+00:00

This patch fixes a kernel panic that can occur when disconnecting a wireless USB->serial device. When the serial device disconnects, the device cleanup procedure ends up calling usb_hcd_disable_endpoint on the serial device's endpoints. The wusbcore uses the ABORT_RPIPE command to abort all transfers on the given endpoint but it does not properly give back the URBs when the transfer results return from the HWA. This patch prevents the transfer result processing code from bailing out when it sees a WA_XFER_STATUS_ABORTED result code so that these urbs are flushed properly by usb_hcd_disable_endpoint. It also updates wa_urb_dequeue to handle the case where the endpoint has already been cleaned up when usb_kill_urb is called which is where the panic originally occurred. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

USB: HWA: fix device probe failure

2013-06-24T23:20:43+00:00

This patch fixes a race condition that caused the HWA_HC interface probe function to occasionally fail. The HWA_HC would attempt to register itself with the HWA_RC by searching for a uwb_rc class device with the same parent device ptr. If the probe function for the HWA_RC interface had yet to run, the uwb_rc class device would not have been created causing the look up to fail and the HWA_HC probe function to return an error causing the device to be unusable. The fix is for the HWA to delay registering with the HWA_RC until receiving the command from userspace to start the wireless channel. It is the responsibility of userspace to ensure that the uwb_rc class device has been created before starting the HWA channel. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

wusbcore: add sysfs attribute for retry count

2013-06-24T23:19:02+00:00

This patch adds a sysfs attribute for the wireless host controller transaction retry count. It also changes the default value from 15 retries to infinite retries because the driver currently does not handle retry errors gracefully. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

wusbcore: add sysfs attribute for DNTS count and interval

2013-06-24T23:19:02+00:00

This patch adds a sysfs attribute for the wireless USB host controller device notification transmit slot(DNTS) count and interval. It also changes the defaults from 16 slots in every MMC to a more reasonable 4 slots every 2ms. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

usb: wire adapter: add scatter gather support

2013-06-17T20:41:58+00:00

This patch adds support for scatter gather DMA to the wire adapter and updates the HWA to advertise support for SG transfers. This allows the block layer to submit transfer requests to the HWA HC without first breaking them up into PAGE_SIZE requests. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

wusbcore wire adapter: ignore HWA_NOTIF_BPST_ADJ notifications

2013-06-06T20:11:14+00:00

No action is needed for the HWA_NOTIF_BPST_ADJ event. Ignore it instead of printing a warning to the log since these events can happen dozens of times per second. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

USB: wusbcore: add HWA-specific fields to usb_rpipe_descriptor

2013-06-06T19:14:39+00:00

This patch adds the HWA specific members to struct usb_rpipe_descriptor and sets them correctly based on the wireless endpoint compananion descriptor. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

wusbhc: disable suspend and resume on the root hub.

2013-06-06T19:14:38+00:00

Suspend and resume are not currently supported on the wireless root hub. Remove the suspend and resume op functions in the host controller driver to avoid constant error messages in the system log. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

wusbcore: reduce keepalive threshold from timeout/2 to timeout/3

2013-06-06T18:19:27+00:00

This patch reduces the keepalive threshold of WUSB host controllers from timeout/2 to timeout/3. The keepalive timer fires every timeout/2 ms, but due to rounding errors and jitter, the host may decide not to send a keepalive at timeout/2. By the time the next timer fires, a full timeout period may have expired causing the device to be disconnected without ever having been sent a keepalive. Changing the keepalive threshold to timeout/3 ensures that at least one keepalive will be sent before a device is disconnected. The patch also updates the code to use msecs_to_jiffies consistently. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman

USB: regroup all depends on USB within an if USB block

2013-04-09T23:49:07+00:00

This patch removes the depends on USB from all config symbols in drivers/usb/host/Kconfig and replace that with an if USB / endif block as suggested by Alan Stern. Some source ... Kconfig lines have been shuffled around to permit a better regroupment of the Kconfig files depending on "config USB" item. No functionnal change is introduced. Acked-by: Alan Stern Signed-off-by: Florian Fainelli Signed-off-by: Greg Kroah-Hartman