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When we jump to free_pcpu on failure in alloc_netdev_mqs()
rx and tx queues are not yet allocated, so no need to free them.
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The uuid structure could be managed as a const in several places.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This issue was reported by coccicheck using the semantic patch
at scripts/coccinelle/api/resource_size.cocci
Signed-off-by: Benoit Taine <benoit.taine@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Zhangfei Gao says:
====================
add hix5hd2 mac driver
v4:
Update indent
Use usleep_range instead of udelay
v3:
Remove .ndo_get_stats as mentioned by Tobias
Add __le32 conversion pointed by Mark
v2:
Update binding accoring to Sergei comments
Update descriptor as Arnd's suggestion
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for the hix5hd2 XGMAC 1Gb ethernet device.
The controller requires two queues for tx and two queues for rx.
Controller fetch buffer from free queue and then push to used queue.
Diver should prepare free queue and free buffer from used queue.
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/bwh/net-next
Ben Hutchings says:
====================
Pull request: Fixes for new ethtool RSS commands
This addresses several problems I previously identified with the new
ETHTOOL_{G,S}RSSH commands:
1. Missing validation of reserved parameters
2. Vague documentation
3. Use of unnamed magic number
4. No consolidation with existing driver operations
I don't currently have access to suitable network hardware, but have
tested these changes with a dummy driver that can support various
combinations of operations and sizes, together with (a) Debian's ethtool
3.13 (b) ethtool 3.14 with the submitted patch to use ETHTOOL_{G,S}RSSH
and minor adjustment for fixes 1 and 3.
v2: Update RSS operations in vmxnet3 too
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We should fail rather than silently ignoring use of these extensions.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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ETHTOOL_{G,S}RXFHINDIR and ETHTOOL_{G,S}RSSH should work for drivers
regardless of whether they expose the hash key, unless you try to
set a hash key for a driver that doesn't expose it.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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This would be a no-op, so there is no reason to request it.
This also allows conversion of the current implementations of
ethtool_ops::{get,set}_rxfh_indir to ethtool_ops::{get,set}_rxfh
with no change other than their parameters.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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Some corner-cases are not explained properly.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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The use of two variable-length arrays is unusual so deserves a bit
more explanation.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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We usually allocate special values of u32 fields starting from the top
down, so also change the value to 0xffffffff. As these operations
haven't been included in a stable release yet, it's not too late to
change.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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We must return -EFAULT immediately rather than continuing into
the loop.
Similarly, we may as well return -EINVAL directly.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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Commit 5bbde4d2ec ("net: fec: use pinctrl PM helpers") caused the following
build error on m68k:
drivers/net/ethernet/freescale/fec_main.c: In function 'fec_enet_open':
drivers/net/ethernet/freescale/fec_main.c:1819:2: error: implicit declaration of function 'pinctrl_pm_select_default_state' [-Werror=implicit-function-declaration]
drivers/net/ethernet/freescale/fec_main.c: In function 'fec_enet_close':
drivers/net/ethernet/freescale/fec_main.c:1863:2: error: implicit declaration of function 'pinctrl_pm_select_sleep_state' [-Werror=implicit-function-declaration]
In order to fix the build error, include the linux/pinctrl/consumer.h header
file.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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(This patch was previously posted as RFC at
http://patchwork.ozlabs.org/patch/352677/)
This patch adds NDA_MASTER attribute to neighbour attributes enum for
bridge/master ifindex. And adds NDA_MASTER to bridge fdb notify msgs.
Today bridge fdb notifications dont contain bridge information.
Userspace can derive it from the port information in the fdb
notification. However this is tricky in some scenarious.
Example, bridge port delete notification comes before bridge fdb
delete notifications. And we have seen problems in userspace
when using libnl where, the bridge fdb delete notification handling code
does not understand which bridge this fdb entry is part of because
the bridge and port association has already been deleted.
And these notifications (port membership and fdb) are generated on
separate rtnl groups.
Fixing the order of notifications could possibly solve the problem
for some cases (I can submit a separate patch for that).
This patch chooses to add NDA_MASTER to bridge fdb notify msgs
because it not only solves the problem described above, but also helps
userspace avoid another lookup into link msgs to derive the master index.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a risk that the variable will be used without being initialized.
This was largely found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch remove variables that are initialized with a constant,
are never updated, and are only used as parameter of return.
Return the constant instead of using a variable.
Verified by compilation only.
The coccinelle script that find and fixes this issue is:
// <smpl>
@@
type T;
constant C;
identifier ret;
@@
- T ret = C;
... when != ret
when strict
return
- ret
+ C
;
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of using a jiffies hack we can use the standard api for delays.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch remove variables that are initialized with a constant,
are never updated, and are only used as parameter of return.
Return the constant instead of using a variable.
Verified by compilation only.
The coccinelle script that find and fixes this issue is:
// <smpl>
@@
type T;
constant C;
identifier ret;
@@
- T ret = C;
... when != ret
when strict
return
- ret
+ C
;
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch remove variables that are initialized with a constant,
are never updated, and are only used as parameter of return.
Return the constant instead of using a variable.
Verified by compilation only.
The coccinelle script that find and fixes this issue is:
// <smpl>
@@
type T;
constant C;
identifier ret;
@@
- T ret = C;
... when != ret
when strict
return
- ret
+ C
;
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To fix:
CC drivers/net/ethernet/broadcom/bcmsysport.o
In file included from drivers/net/ethernet/broadcom/bcmsysport.c:28:0:
drivers/net/ethernet/broadcom/bcmsysport.h:41:8: error: redefinition of 'struct tsb'
arch/sparc/include/asm/mmu_64.h:65:8: note: originally defined here
make[1]: *** [drivers/net/ethernet/broadcom/bcmsysport.o] Error 1
we change struct tsb to struct bcm_tsb in the broadcom driver in
order to avoid the namespace collision. For consistency, we also
change struct rsb to struct bcm_rsb, so the Rx/Tx symmetry is
maintained.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make fib_triestat_seq_show consistent with other /proc/net files and
use seq_file_net.
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current probe_filter_length() (the function that calculates the
length of a test BPF filter) behavior is to declare the end of the
filter as soon as it finds {0, *, *, 0}. This is actually a valid
insn ("ld #0"), so any filter with includes "BPF_STMT(BPF_LD | BPF_IMM, 0)"
fails (its length is cut short).
We are changing probe_filter_length() so as to start from the end, and
declare the end of the filter as the first instruction which is not
{0, *, *, 0}. This solution produces a simpler patch than the
alternative of using an explicit end-of-filter mark. It is technically
incorrect if your filter ends up with "ld #0", but that should not
happen anyway.
We also add a new test (LD_IMM_0) that includes ld #0 (does not work
without this patch).
Signed-off-by: Chema Gonzalez <chema@google.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ezequiel Garcia says:
====================
ethernet: marvell: After-TSO fixes
This patchset consists of different fixes and improvements in the mvneta
and mv643xx_eth drivers. The most important change is the one that allows
to support small MSS values (see patches 2 and 6).
This is done following the Solarflare driver (see commit 7e6d06f0de3f7).
While doing this some other fixes were spotted and so they are included.
Finally, notice that the TSO support introduced a wrong DMA unmapping
of the TSO header buffers, so patches 4 and 8 provide a couple patches to
fix that in the drivers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The buffers for the TSO headers belong to a DMA coherent region which is
allocated at ndo_open() time, and released at ndo_stop() time.
Therefore, and contrary to the TSO payload descriptor buffers, the TSO header
buffers don't need to be unmapped. This commit adds a check to detect a
TSO header buffer and explicitly prevent the unmap.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After adding proper stop/wake thresholds, we can expect a queue to never
be full and drop the NETDEV_TX_BUSY return path. In any case, if the queue
cannot accommodate a TSO packet, the packet would be discarded.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently small MSS values may require too many TSO descriptors for
the default queue size. This commit prevents this situation by fixing
the maximum supported TSO number of segments to 100 and by setting a
minimum Tx queue size. The minimum Tx queue size is set so that at
least 2 worst-case skb can be accommodated.
In addition, the queue stop and wake thresholds values are adjusted
accordingly. The queue is stopped when there's room for only 1 worst-case
skb and waked when the number of descriptors is half that value.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit fixes the current dropped packet count by doing it properly,
increasing the count when a packet is discarded; i.e. the packet is not
processed and the driver returns NETDEV_TX_OK.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The buffers for the TSO headers belong to a DMA coherent region which is
allocated at ndo_open() time, and released at ndo_stop() time.
Therefore, and contrary to the TSO payload descriptor buffers, the TSO header
buffers don't need to be unmapped. This commit adds a check to detect a
TSO header buffer and explicitly prevent the unmap.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Tx descriptor release code currently calls dma_unmap_single() and
dev_kfree_skb_any() if the descriptor is associated with a non-NULL skb.
This is true only for the last fragment of the packet.
This is wrong, however, since every descriptor buffer is DMA mapped and needs
to be unmapped.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently small MSS values may require too many TSO descriptors for
the default queue size. This commit prevents this situation by fixing
the maximum supported TSO number of segments to 100 and by setting a
minimum Tx queue size. The minimum Tx queue size is set so that at
least 2 worst-case skb can be accommodated.
In addition, the queue stop and wake thresholds values are adjusted
accordingly. The queue is stopped when there's room for only 1 worst-case
skb and waked when the number of descriptors is half that value.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This driver has no need for a custom NAPI weigth. Use the default
one, which has the same value.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add netpoll support to macvlan devices. Based on the netpoll support in the 802.1q vlan code.
Tested and macvlan could work well with netconsole.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Bjørn Mork says:
====================
cdc_ncm: fixes and conversion to sysfs API
After considering the comments received after the ethtool coalesce
support was commited, I have ended up concluding that we should
remove it again, while we can, before it hits a release. The idea
was not well enough thought through, and all comments received
pointed to advantages of using a sysfs based API instead.
This series removes the ethtool coalesce support and replaces it
with sysfs attributes in a driver specific group under the netdev.
The first 3 patches are unrelated fixes:
patch 1: reducing truesize as discussed
patch 2: fixing a potentional buffer overrun when changing tx_max
patch 3: prevent framing errors when changing rx_max
Changes v2:
- minor editorial changes to patch 8, as suggested by Peter Stuge
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding documentation for all the driver specific sysfs attributes.
Cc: Peter Stuge <peter@stuge.se>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The min_tx_pkt variable decides the cutoff point where the driver
will stop padding out NTBs to maximum size. The padding is a tradeoff
where we use some USB bus bandwidth to allow the device to receive
fixed size buffers. Different devices will have different optimal
settings, spanning from no padding at all to padding every NTB.
There is no way to automatically figure out which setting is best
for a specific device.
The default value is a reasonable tradeoff, calculated based on the
USB packet size and out NTB max size. This may have to be changed
along with any tx_max changes.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mandatory GetNtbParameters control request is an important part of
the host <-> device protocol negotiation in CDC NCM (and CDC MBIM). It
gives device limits which the host must obey when configuring the
protocol aggregation variables. The driver will enforce this by
rejecting attempts to set any of the tunable variables to a value
which is not supported by the device. Exporting the parameter block
helps userspace decide which values are allowed without resorting
to trial and error.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ethtool coalesce API is not applicable for this driver. Forcing
it to fit the NCM aggregation redefined the API in a driver specific
way, which is much worse than defining a clean new API. These ethtool
coalesce functions have therefore been replaced by a new sysfs API.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Attach a driver specific sysfs group to the netdev, and use it
for the rx/tx aggregation variables.
The datagram aggregation defined by the CDC NCM specification is
specific to this device class (including CDC MBIM). Using the
ethtool interrupt coalesce API as an interface to the aggregation
parameters redefined that API in a driver specific and confusing
way. A sysfs group
- makes it clear that this is a driver specific userspace API, and
- allows us to export the real values instead of some translated
version, and
- lets us include more aggregation variables which were impossible
to force into the ethtool API.
Additionally, using sysfs allows tuning the driver on space
constrained hosts where userspace tools like ethtool are undesired.
Suggested-by: Peter Stuge <peter@stuge.se>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It doesn't matter whether the buffer size goes up or down. We have to
keep usbnet and device syncronized to be able to split transfers at the
correct boundaries. The spec allow skipping short packets when using
max sized transfers. If we don't tell usbnet about our new expected rx
buffer size, then it will merge and/or split NTBs. The driver does not
support this, and the result will be lots of framing errors.
Fix by always reallocating usbnet rx buffers when the rx_max value
changes.
Fixes: 68864abf08f0 ("net: cdc_ncm: support rx_max/tx_max updates when running")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We are calling usbnet_start_xmit() to flush any remaining data,
depending on the side effect that tx_curr_skb is set to NULL,
ensuring a new allocation using the updated tx_max. But this
side effect will only happen if there were any cached data ready
to transmit. If not, then an empty tx_curr_skb is still allocated
using the old tx_max size. Free it to avoid a buffer overrun.
Fixes: 68864abf08f0 ("net: cdc_ncm: support rx_max/tx_max updates when running")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Cloning the big skbs we use for USB buffering chokes up TCP and
SCTP because the socket memory limits are hitting earlier than
they should. It is better to unconditionally copy the unwrapped
packets to freshly allocated skbs.
Reported-by: Jim Baxter <jim_baxter@mentor.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The macvlan dev should always have the same mac address like lowerdev
when in the passthru mode, change the mac address alone will break the
work mechanism, so when the lowerdev or macvlan mac address changes,
we should propagate the changes to another dev.
v1->v2: Allow macvlan dev to change mac address for passthru mode and propagate to
lowerdev.
v2->v3: Don't set the mac address to the lower dev's unicast address for
passthru mode when mac address changes.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The following patch moved device tree interrupt resolution into
platform_get_irq_byname:
ad69674 of/irq: do irq resolution in platform_get_irq_byname()
As a result, the function no longer only return -ENXIO on error.
This breaks DT based probing of stmmac, as seen in test runs of
linux-next next-20140526 cubie2-sunxi_defconfig:
http://lists.linaro.org/pipermail/kernel-build-reports/2014-May/003659.html
This patch makes the stmmac_platform probe function properly handle
error codes, such as returning for deferred probing, and other codes
returned by of_irq_get_by_name.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:
====================
pull request: wireless-next 2014-06-02
Please pull this remaining batch of updates intended for the 3.16 stream...
For the mac80211 bits, Johannes says:
"The remainder for -next right now is mostly fixes, and a handful of
small new things like some CSA infrastructure, the regdb script mW/dBm
conversion change and sending wiphy notifications."
For the bluetooth bits, Gustavo says:
"Some more patches for 3.16. There is nothing really special here, just a
bunch of clean ups, fixes plus some small improvements. Please pull."
For the nfc bits, Samuel says:
"We have:
- Felica (Type3) tags support for trf7970a
- Type 4b tags support for port100
- st21nfca DTS typo fix
- A few sparse warning fixes"
For the atheros bits, Kalle says:
"Ben added support for setting antenna configurations. Michal improved
warm reset so that we would not need to fall back to cold reset that
often, an issue where ath10k stripped protected flag while in monitor
mode and made module initialisation asynchronous to fix the problems
with firmware loading when the driver is linked to the kernel.
Luca removed unused channel_switch_beacon callbacks both from ath9k and
ath10k. Marek fixed Protected Management Frames (PMF) when using Action
Frames. Also we had other small fixes everywhere in the driver."
Along with that, there are a handful of updates to a variety
of drivers. This includes updates to at76c50x-usb, ath9k, b43,
brcmfmac, mwifiex, rsi, rtlwifi, and wil6210.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
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Print message if no events received. This should not happen.
If it is, it points to the problem in firmware.
Track also cases when multiple events processed in one IRQ
Print information as soon as possible - mbox pointers and
event header right after reading it. This helps to identify potential
problem with memory allocation for the event buffer.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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