linux-toradex.git/drivers/net, branch v3.0.29

ath9k: fix max noise floor threshold

2012-04-22T23:21:41+00:00

commit 2ee0a07028d2cde6e131b73f029dae2b93c50f3a upstream.

Currently the maximum noise floor limit is set as too high (-60dB). The
assumption of having a higher threshold limit is that it would help
de-sensitize the receiver (reduce phy errors) from continuous
interference. But when we have a bursty interference where there are
collisions and then free air time and if the receiver is desensitized too
much, it will miss the normal packets too. Lets make use of chips
specific min, nom and max limits always. This patch helps to improve the
connection stability in congested networks.

Cc: Paul Stewart 
Tested-by: Gary Morain 
Signed-off-by: Madhan Jaganathan 
Signed-off-by: Rajkumar Manoharan 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.0/3.2: adjust context]
Signed-off-by: Ben Hutchings 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: Add missing DMA buffer unmapping for PCI drivers

2012-04-22T23:21:22+00:00

commit 673f7786e205c87b5d978c62827b9a66d097bebb upstream.

In https://bugzilla.kernel.org/show_bug.cgi?id=42976, a system with driver
rtl8192se used as an AP suffers from "Out of SW-IOMMU space" errors. These
are caused by the DMA buffers used for beacons never being unmapped.

This bug was also reported at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/961618

Reported-and-Tested-by: Da Xue 
Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

USB: Add Motorola Rokr E6 Id to the USBNet driver "zaurus"

2012-04-13T15:14:08+00:00

commit a2daf263107ba3eb6db33931881731fa51c95045 upstream.

Added Vendor/Device Id of Motorola Rokr E6 (22b8:6027) so it can be
recognized by the "zaurus" USBNet driver.
Applies to Linux 3.2.13 and 2.6.39.4.
Signed-off-by: Guan Xin 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: usb: cdc_eem: fix mtu

2012-04-13T15:14:05+00:00

[ Upstream commit 78fb72f7936c01d5b426c03a691eca082b03f2b9 ]

Make CDC EEM recalculate the hard_mtu after adjusting the
hard_header_len.

Without this, usbnet adjusts the MTU down to 1494 bytes, and the host is
unable to receive standard 1500-byte frames from the device.

Tested with the Linux USB Ethernet gadget.

Cc: Oliver Neukum 
Signed-off-by: Rabin Vincent 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sky2: override for PCI legacy power management

2012-04-02T16:27:21+00:00

[ Upstream commit 5676cc7bfe1e388e87843f71daa229610385b41e ]

Some BIOS's don't setup power management correctly (what else is
new) and don't allow use of PCI Express power control. Add a special
exception module parameter to allow working around this issue.
Based on slightly different patch by Knut Petersen.

Reported-by: Arkadiusz Miskiewicz 
Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

e1000e: Avoid wrong check on TX hang

2012-04-02T16:27:18+00:00

commit 09357b00255c233705b1cf6d76a8d147340545b8 upstream.

Based on the original patch submitted my Michael Wang
.
Descriptors may not be write-back while checking TX hang with flag
FLAG2_DMA_BURST on.
So when we detect hang, we just flush the descriptor and detect
again for once.

-v2 change 1 to true and 0 to false and remove extra ()

CC: Michael Wang 
CC: Flavio Leitner 
Acked-by: Jesse Brandeburg 
Tested-by: Aaron Brown 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Greg Kroah-Hartman

usbnet: don't clear urb->dev in tx_complete

2012-04-02T16:27:17+00:00

commit 5d5440a835710d09f0ef18da5000541ec98b537a upstream.

URB unlinking is always racing with its completion and tx_complete
may be called before or during running usb_unlink_urb, so tx_complete
must not clear urb->dev since it will be used in unlink path,
otherwise invalid memory accesses or usb device leak may be caused
inside usb_unlink_urb.

Cc: Alan Stern 
Cc: Oliver Neukum 
Signed-off-by: Ming Lei 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

usbnet: increase URB reference count before usb_unlink_urb

2012-04-02T16:27:17+00:00

commit 0956a8c20b23d429e79ff86d4325583fc06f9eb4 upstream.

Commit 4231d47e6fe69f061f96c98c30eaf9fb4c14b96d(net/usbnet: avoid
recursive locking in usbnet_stop()) fixes the recursive locking
problem by releasing the skb queue lock, but it makes usb_unlink_urb
racing with defer_bh, and the URB to being unlinked may be freed before
or during calling usb_unlink_urb, so use-after-free problem may be
triggerd inside usb_unlink_urb.

The patch fixes the use-after-free problem by increasing URB
reference count with skb queue lock held before calling
usb_unlink_urb, so the URB won't be freed until return from
usb_unlink_urb.

Cc: Sebastian Andrzej Siewior 
Cc: Alan Stern 
Cc: Oliver Neukum 
Reported-by: Dave Jones 
Signed-off-by: Ming Lei 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

p54spi: Release GPIO lines and IRQ on error in p54spi_probe

2012-04-02T16:27:10+00:00

commit 62ebeed8d00aef75eac4fd6c161cae75a41965ca upstream.

This makes it possible to reload driver if insmod has failed due to
missing firmware.

Signed-off-by: Max Filippov 
Acked-by: Christian Lamparter 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: rtl8192ce: Fix loss of receive performance

2012-04-02T16:27:09+00:00

commit a9b89e2567c743483e6354f64d7a7e3a8c101e9e upstream.

Driver rtl8192ce when used with the RTL8188CE device would start at about
20 Mbps on a 54 Mbps connection, but quickly drop to 1 Mbps. One of the
symptoms is that the AP would need to retransmit each packet 4 of 5 times
before the driver would acknowledge it. Recovery is possible only by
unloading and reloading the driver. This problem was reported at
https://bugzilla.redhat.com/show_bug.cgi?id=770207.

The problem is due to a missing update of the gain setting.

Signed-off-by: Jingjun Wu 
Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman