linux-stable.git/drivers/net, branch v4.4.98

can: c_can: don't indicate triple sampling support for D_CAN

2017-11-15T16:13:13+00:00

commit fb5f0b3ef69b95e665e4bbe8a3de7201f09f1071 upstream.

The D_CAN controller doesn't provide a triple sampling mode, so don't set
the CAN_CTRLMODE_3_SAMPLES flag in ctrlmode_supported. Currently enabling
triple sampling is a no-op.

Signed-off-by: Richard Schütz 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman

can: sun4i: handle overrun in RX FIFO

2017-11-15T16:13:13+00:00

commit 4dcf924c2eda0c47a5c53b7703e3dc65ddaa8920 upstream.

SUN4Is CAN IP has a 64 byte deep FIFO buffer. If the buffer is not
drained fast enough (overrun) it's getting mangled. Already received
frames are dropped - the data can't be restored.

Signed-off-by: Gerhard Bertelsmann 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman

cdc_ncm: Set NTB format again after altsetting switch for Huawei devices

2017-11-15T16:13:11+00:00

commit 2b02c20ce0c28974b44e69a2e2f5ddc6a470ad6f upstream.

Some firmwares in Huawei E3372H devices have been observed to switch back
to NTB 32-bit format after altsetting switch.
This patch implements a driver flag to check for the device settings and
set NTB format to 16-bit again if needed.
The flag has been activated for devices controlled by the huawei_cdc_ncm.c
driver.

V1->V2:
- fixed broken error checks
- some corrections to the commit message
V2->V3:
- variable name changes, to clarify what's happening
- check (and possibly set) the NTB format later in the common bind code path

Signed-off-by: Enrico Mioso 
Reported-and-tested-by: Christian Panton 
Reviewed-by: Bjørn Mork 
CC: Bjørn Mork 
CC: Christian Panton 
CC: linux-usb@vger.kernel.org
CC: netdev@vger.kernel.org
CC: Oliver Neukum 
Signed-off-by: David S. Miller 
Cc: Porto Rio 
Signed-off-by: Greg Kroah-Hartman

xen/netback: set default upper limit of tx/rx queues to 8

2017-11-15T16:13:09+00:00

[ Upstream commit 56dd5af9bc23d0d5d23bb207c477715b4c2216c5 ]

The default for the maximum number of tx/rx queues of one interface is
the number of cpus of the system today. As each queue pair reserves 512
grant pages this default consumes a ridiculous number of grants for
large guests.

Limit the queue number to 8 as default. This value can be modified
via a module parameter if required.

Signed-off-by: Juergen Gross 
Reviewed-by: Boris Ostrovsky 
Signed-off-by: Boris Ostrovsky 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

can: kvaser_usb: Ignore CMD_FLUSH_QUEUE_REPLY messages

2017-11-02T08:40:50+00:00

commit e1d2d1329a5722dbecc9c278303fcc4aa01f8790 upstream.

To avoid kernel warning "Unhandled message (68)", ignore the
CMD_FLUSH_QUEUE_REPLY message for now.

As of Leaf v2 firmware version v4.1.844 (2017-02-15), flush tx queue is
synchronous. There is a capability bit indicating whether flushing tx
queue is synchronous or asynchronous.

A proper solution would be to query the device for capabilities. If the
synchronous tx flush capability bit is set, we should wait for
CMD_FLUSH_QUEUE_REPLY message, while flushing the tx queue.

Signed-off-by: Jimmy Assarsson 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman

can: kvaser_usb: Correct return value in printout

2017-11-02T08:40:50+00:00

commit 8f65a923e6b628e187d5e791cf49393dd5e8c2f9 upstream.

If the return value from kvaser_usb_send_simple_msg() was non-zero, the
return value from kvaser_usb_flush_queue() was printed in the kernel
warning.

Signed-off-by: Jimmy Assarsson 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman

can: sun4i: fix loopback mode

2017-11-02T08:40:50+00:00

commit 3a379f5b36ae039dfeb6f73316e47ab1af4945df upstream.

Fix loopback mode by setting the right flag and remove presume mode.

Signed-off-by: Gerhard Bertelsmann 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: rtl8821ae: Fix connection lost problem

2017-10-27T08:23:17+00:00

commit b8b8b16352cd90c6083033fd4487f04fae935c18 upstream.

In commit 40b368af4b75 ("rtlwifi: Fix alignment issues"), the read
of REG_DBI_READ was changed from 16 to 8 bits. For unknown reasonsi
this change results in reduced stability for the wireless connection.
This regression was located using bisection.

Fixes: 40b368af4b75 ("rtlwifi: Fix alignment issues")
Reported-and-tested-by: James Cameron 
Signed-off-by: Larry Finger 
Cc: Ping-Ke Shih 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

brcmsmac: make some local variables 'static const' to reduce stack size

2017-10-27T08:23:16+00:00

commit c503dd38f850be28867ef7a42d9abe5ade81a9bd upstream.

With KASAN and a couple of other patches applied, this driver is one
of the few remaining ones that actually use more than 2048 bytes of
kernel stack:

broadcom/brcm80211/brcmsmac/phy/phy_n.c: In function 'wlc_phy_workarounds_nphy_gainctrl':
broadcom/brcm80211/brcmsmac/phy/phy_n.c:16065:1: warning: the frame size of 3264 bytes is larger than 2048 bytes [-Wframe-larger-than=]
broadcom/brcm80211/brcmsmac/phy/phy_n.c: In function 'wlc_phy_workarounds_nphy':
broadcom/brcm80211/brcmsmac/phy/phy_n.c:17138:1: warning: the frame size of 2864 bytes is larger than 2048 bytes [-Wframe-larger-than=]

Here, I'm reducing the stack size by marking as many local variables as
'static const' as I can without changing the actual code.

This is the first of three patches to improve the stack usage in this
driver. It would be good to have this backported to stabl kernels
to get all drivers in 'allmodconfig' below the 2048 byte limit so
we can turn on the frame warning again globally, but I realize that
the patch is larger than the normal limit for stable backports.

The other two patches do not need to be backported.

Acked-by: Arend van Spriel 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

can: esd_usb2: Fix can_dlc value for received RTR, frames

2017-10-27T08:23:16+00:00

commit 72d92e865d1560723e1957ee3f393688c49ca5bf upstream.

The dlc member of the struct rx_msg contains also the ESD_RTR flag to
mark received RTR frames. Without the fix the can_dlc value for received
RTR frames would always be set to 8 by get_can_dlc() instead of the
received value.

Fixes: 96d8e90382dc ("can: Add driver for esd CAN-USB/2 device")
Signed-off-by: Stefan Mätje 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman