linux-stable.git/drivers/net, branch v4.8.7

ath10k: cache calibration data when the core is stopped

2016-11-10T15:38:53+00:00

commit f67b107d4ceddcf7aa65b706aaaf50d68edb52a6 upstream.

Commit 0b8e3c4ca29f ("ath10k: move cal data len to hw_params") broke retrieving
the calibration data from cal_data debugfs file. The length of file was always
zero. The reason is:

    static ssize_t ath10k_debug_cal_data_read(struct file *file,
                                          char __user *user_buf,
                                          size_t count, loff_t *ppos)
    {
        struct ath10k *ar = file->private_data;
        void *buf = file->private_data;

This is obviously bogus, private_data cannot contain both struct ath10k and the
buffer. Fix it by caching calibration data to ar->debug.cal_data. This also
allows it to be accessed when the device is not active (interface is down).

The cal_data buffer is fixed size because during the first firmware probe we
don't yet know what will be the lenght of the calibration data. It was simplest
just to use a fixed length. There's a WARN_ON() in
ath10k_debug_cal_data_fetch() if the buffer is too small.

Tested with qca988x and firmware 10.2.4.70.56.

Reported-by: Nikolay Martynov 
Fixes: 0b8e3c4ca29f ("ath10k: move cal data len to hw_params")
Signed-off-by: Marty Faltesek 
[kvalo@qca.qualcomm.com: improve commit log and minor other changes]
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

Revert "ath9k_hw: implement temperature compensation support for AR9003+"

2016-11-10T15:38:53+00:00

commit 304e5ac118cc351eb047b6c433a89e13ea7259cf upstream.

This reverts commit 171f6402e4aa ("ath9k_hw: implement temperature compensation
support for AR9003+"). Some users report that this commit causes a regression
in performance under some conditions.

Fixes: 171f6402e4aa ("ath9k_hw: implement temperature compensation support for AR9003+")
Signed-off-by: Felix Fietkau 
[kvalo@qca.qualcomm.com: improve commit log]
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtl8xxxu: Fix rtl8723bu driver reload issue

2016-11-10T15:38:53+00:00

commit ab05e5ec81c76f3a852919c22984c885edd2414a upstream.

The generic disable_rf() function clears bits 22 and 23 in
REG_RX_WAIT_CCA, however we did not re-enable them again in
rtl8723b_enable_rf()

This resolves the problem for me with 8723bu devices not working again
after reloading the driver.

Signed-off-by: Jes Sorensen 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtl8xxxu: Fix big-endian problem reporting mactime

2016-11-10T15:38:52+00:00

commit 8a55698f2f29d227825173420d7b99b9277ca88c upstream.

The full RX descriptor is converted so converting tsfl again would
return it to it's original endian value.

Signed-off-by: Jes Sorensen 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

rtl8xxxu: Fix memory leak in handling rxdesc16 packets

2016-11-10T15:38:52+00:00

commit 1e54134ccad00f76ddf00f3e77db3dc8fdefbb47 upstream.

A device running without RX package aggregation could return more data
in the USB packet than the actual network packet. In this case we
could would clone the skb but then determine that that there was no
packet to handle and exit without freeing the cloned skb first.

This has so far only been observed with 8188eu devices, but could
affect others.

Signed-off-by: Jes Sorensen 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: mvm: bail out if CTDP start operation fails

2016-10-31T11:02:14+00:00

commit 75cfe338b8a6fadaa28879a969047554701a7589 upstream.

We were assigning the return value of iwl_mvm_ctdp_command() to a
variable, but never checking it.  If this command fails, we should not
allow the interface up process to proceed, since it is potentially
dangerous to ignore thermal management requirements.

Fixes: commit 5c89e7bc557e ("iwlwifi: mvm: add registration to cooling device")
Signed-off-by: Luca Coelho 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: mvm: disable P2P queue on mac context release

2016-10-31T11:02:14+00:00

commit 341d7eb8223bdd48bdf75729487a2de5e01623b3 upstream.

AP queue is properly released, but P2P queue isn't.

Fixes: commit 4c965139a3cd ("iwlwifi: mvm: support p2p device frames tx on dqa queue #2")
Signed-off-by: Sara Sharon 
Signed-off-by: Luca Coelho 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: mvm: support BAR in reorder buffer

2016-10-31T11:02:14+00:00

commit 9a73a7d24d51eaf9e43c771c53cf7b594e5b5334 upstream.

On default queue we will not receive frame release notification,
but the BAR itself.
Upon receiving the BAR driver should look at the NSSN and adjust
window accordingly.

Fixes: b915c10174fb ("iwlwifi: mvm: add reorder buffer per queue")
Signed-off-by: Sara Sharon 
Signed-off-by: Luca Coelho 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: mvm: free reserved queue on STA removal

2016-10-31T11:02:14+00:00

commit a0315dea9091d1ebc1534f6129b3fc9942b8ca99 upstream.

When a STA is removed in DQA mode, if no traffic went through
its reserved queue, the txq continues to be marked as
reserved and no STA can use it.

Make sure that in such a case the reserved queue is marked
as free when the STA is removed.

Fixes: commit 24afba7690e4 ("iwlwifi: mvm: support bss dynamic alloc/dealloc of queues")
Signed-off-by: Liad Kaufman 
Signed-off-by: Luca Coelho 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: mvm: call a different txq_enable function

2016-10-31T11:02:13+00:00

commit ca3b9c6b6d4db9a8ba5fc8b95664e75468c59f9f upstream.

Since the SCD_QUEUE_CFG command was introduced the driver
calls iwl_trans_txq_enable_cfg() with a NULL for scd_cfg
parameter.
This makes the transport avoid writing to the SCD pointers,
since it can cause races with firmware, which is also accessing
the registers.
The transport only updates the write pointer in that case.
Fix a wrong call to iwl_trans_txq_enable() which caused a
scd_cfg parameter to be sent to transport, resulting with an
access to SCD registers.

Fixes: 58f2cc57dc6a ("iwlwifi: mvm: support dqa-mode scd queue redirection")
Signed-off-by: Sara Sharon 
Signed-off-by: Luca Coelho 
Signed-off-by: Greg Kroah-Hartman