linux/drivers/net/wireless, branch v3.2.41

iwlwifi: always copy first 16 bytes of commands

2013-03-20T15:03:24Z

commit 8a964f44e01ad3bbc208c3e80d931ba91b9ea786 upstream. The FH hardware will always write back to the scratch field in commands, even host commands not just TX commands, which can overwrite parts of the command. This is problematic if the command is re-used (with IWL_HCMD_DFL_NOCOPY) and can cause calibration issues. Address this problem by always putting at least the first 16 bytes into the buffer we also use for the command header and therefore make the DMA engine write back into this. For commands that are smaller than 16 bytes also always map enough memory for the DMA engine to write back to. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg [bwh: Backported to 3.2: - Adjust context - Drop the IWL_HCMD_DFL_DUP handling - Fix descriptor addresses and lengths for tracepoint, but otherwise leave it unchanged] Signed-off-by: Ben Hutchings

mwifiex: correct sleep delay counter

2013-03-20T15:03:19Z

commit 3e7a4ff7c5b6423ddb644df9c41b8b6d2fb79d30 upstream. Maximum delay for waking up card is 50 ms. Because of typo in counter, this delay goes to 500ms. This patch fixes the bug. Signed-off-by: Avinash Patil Signed-off-by: Amitkumar Karwar Signed-off-by: Yogesh Ashok Powar Signed-off-by: Bing Zhao Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings

ath9k_htc: fix signal strength handling issues

2013-03-20T15:03:19Z

commit 838f427955dcfd16858b0108ce29029da0d56a4e upstream. The ath9k commit 2ef167557c0a26c88162ecffb017bfcc51eb7b29 (ath9k: fix signal strength reporting issues) fixed an issue where the reported per-frame signal strength reported to mac80211 was being overwritten with an internal average. The same issue is also present in ath9k_htc. In addition to preventing the driver from overwriting the value, this commit also ensures that the internal average (which is used for ANI) only tracks beacons of the AP that we're connected to. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville [bwh: Backported to 3.2: use compare_ether_addr() instead of ether_addr_equal(), with opposite sense] Signed-off-by: Ben Hutchings

ath9k: fix RSSI dummy marker value

2013-03-20T15:03:19Z

commit a3d63cadbad97671d740a9698acc2c95d1ca6e79 upstream. RSSI is being stored internally as s8 in several places. The indication of an unset RSSI value, ATH_RSSI_DUMMY_MARKER, was supposed to have been set to 127, but ended up being set to 0x127 because of a code cleanup mistake. This could lead to invalid signal strength values in a few places. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings

b43: Increase number of RX DMA slots

2013-03-06T03:24:04Z

commit ccae0e50c16a7f7adb029c169147400d1ce9f703 upstream. Bastian Bittorf reported that some of the silent freezes on a Linksys WRT54G were due to overflow of the RX DMA ring buffer, which was created with 64 slots. That finding reminded me that I was seeing similar crashed on a netbook, which also has a relatively slow processor. After increasing the number of slots to 128, runs on the netbook that previously failed now worked; however, I found that 109 slots had been used in one test. For that reason, the number of slots is being increased to 256. Signed-off-by: Larry Finger Cc: Bastian Bittorf Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

rtlwifi: usb: allocate URB control message setup_packet and data buffer separately

2013-03-06T03:24:03Z

commit bc6b89237acb3dee6af6e64e51a18255fef89cc2 upstream. rtlwifi allocates both setup_packet and data buffer of control message urb, using shared kmalloc in _usbctrl_vendorreq_async_write. Structure used for allocating is: struct { u8 data[254]; struct usb_ctrlrequest dr; }; Because 'struct usb_ctrlrequest' is __packed, setup packet is unaligned and DMA mapping of both 'data' and 'dr' confuses ARM/sunxi, leading to memory corruptions and freezes. Patch changes setup packet to be allocated separately. [v2]: - Use WARN_ON_ONCE instead of WARN_ON Signed-off-by: Jussi Kivilinna Signed-off-by: John W. Linville [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings

rtlwifi: rtl8192cu: Add new USB ID

2013-03-06T03:23:53Z

commit 8708aac79e4572ba673d7a21e94ddca9f3abb7fc upstream. A new model of the RTL8188CUS has appeared. Reported-and-tested-by: Thomas Rosenkrantz Signed-off-by: Larry Finger Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings

rtlwifi: rtl8192cu: Fix NULL dereference BUG when using new_id

2013-03-06T03:23:53Z

commit 957f4aca5fa0db69635271bc4621cc0b65b2d590 upstream. When the new_id entry in /sysfs is used for a foreign USB device, rtlwifi BUGS with a NULL pointer dereference because the per-driver configuration data is not available. The probe function has been restructured as suggested by Ben Hutchings . Signed-off-by: Larry Finger Signed-off-by: John W. Linville [bwh: Backported to 3.2: adjust context, indentation] Signed-off-by: Ben Hutchings

p54usb: corrected USB ID for T-Com Sinus 154 data II

2013-03-06T03:23:53Z

commit 008e33f733ca51acb2dd9d88ea878693b04d1d2a upstream. Corrected USB ID for T-Com Sinus 154 data II. ISL3887-based. The device was tested in managed mode with no security, WEP 128 bit and WPA-PSK (TKIP) with firmware 2.13.1.0.lm87.arm (md5sum: 7d676323ac60d6e1a3b6d61e8c528248). It works. Signed-off-by: Tomasz Guszkowski Acked-By: Christian Lamparter Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings

rt2800usb: Add support for 2001:3c1e (D-Link DWA-125 rev B1) USB Wi-Fi adapter

2013-02-20T03:15:27Z

commit fd7b9270120ca7e53fbf0469febe0c68acf6a0a2 upstream. D-Link DWA-125/B1 is a relatively new USB Wi-Fi adapter, using a Ralink chipset supported by the rt2800usb driver. Currently, to work around the problem (it's missing in all present kernel versions, up to and including 3.7.x), I had to add this to /etc/rc.local: echo 2001 3c1e >> /sys/bus/usb/drivers/rt2800usb/new_id After that, the device works without problems. Been using it for over a week with no bugs in sight. The attached patch is trivial and simply adds the new USB ID to the list of devices handled by rt2800usb. Signed-off-by: Maia Kozheva Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings