We should const-ify comparisons on skb_queue_* inline helper
functions as their parameters are const as well, so lets not
drop that.
Suggested-by: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix three warnings related to:
net/xfrm/xfrm_policy.c:1644:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
net/xfrm/xfrm_policy.c:1656:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
net/xfrm/xfrm_policy.c:1668:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
Just removing the inline keyword is sufficient as the compiler will
decide on its own about inlining or not.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Try to allocate space for 64-bit BARs above 4G first, to preserve the space
below 4G for 32-bit BARs. If there's no space above 4G available, fall
back to allocating anywhere.
[bhelgaas: reworked starting from http://lkml.kernel.org/r/1387485843-17403-2-git-send-email-yinghai@kernel.org]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
When allocating space for 32-bit BARs, we previously limited RESOURCE
addresses so they would fit in 32 bits. However, the BUS address need not
be the same as the resource address, and it's the bus address that must fit
in the 32-bit BAR.
This patch adds:
- pci_clip_resource_to_region(), which clips a resource so it contains
only the range that maps to the specified bus address region, e.g., to
clip a resource to 32-bit bus addresses, and
- pci_bus_alloc_from_region(), which allocates space for a resource from
the specified bus address region,
and changes pci_bus_alloc_resource() to allocate space for 64-bit BARs from
the entire bus address region, and space for 32-bit BARs from only the bus
address region below 4GB.
If we had this window:
pci_root HWP0002:0a: host bridge window [mem 0xf0180000000-0xf01fedfffff] (bus address [0x80000000-0xfedfffff])
we previously could not put a 32-bit BAR there, because the CPU addresses
don't fit in 32 bits. This patch fixes this, so we can use this space for
32-bit BARs.
It's also possible (though unlikely) to have resources with 32-bit CPU
addresses but bus addresses above 4GB. In this case the previous code
would allocate space that a 32-bit BAR could not map.
Remove PCIBIOS_MAX_MEM_32, which is no longer used.
[bhelgaas: reworked starting from http://lkml.kernel.org/r/1386658484-15774-3-git-send-email-yinghai@kernel.org]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
pci_bus_alloc_resource() avoids allocating space below the "min" supplied
by the caller (usually PCIBIOS_MIN_IO or PCIBIOS_MIN_MEM). This is to
protect badly documented motherboard resources. But if we're allocating
space inside an already-configured PCI-PCI bridge window, we ignore "min".
See 688d191821 ("pci: make bus resource start address override minimum IO
address").
This patch moves the check to make it more visible and simplify future
patches. No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The ct expression can currently not be used in the inet family since
we don't have a conntrack module for NFPROTO_INET, so
nf_ct_l3proto_try_module_get() fails. Add some manual handling to
load the modules for both NFPROTO_IPV4 and NFPROTO_IPV6 if the
ct expression is used in the inet family.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
For L3-proto independant rules we need to get at the L4 protocol value
directly. Add it to the nft_pktinfo struct and use the meta expression
to retrieve it.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Needed by multi-family tables to distinguish IPv4 and IPv6 packets.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This patch adds a new table family and a new filter chain that you can
use to attach IPv4 and IPv6 rules. This should help to simplify
rule-set maintainance in dual-stack setups.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add support to register chains to multiple hooks for different address
families for mixed IPv4/IPv6 tables.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Multi-family tables need the AF from the hook ops. Add a pointer to the
hook ops and replace usage of the hooknum member in struct nft_pktinfo.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Currently the AF-specific hook functions override the chain-type specific
hook functions. That doesn't make too much sense since the chain types
are a special case of the AF-specific hooks.
Make the AF-specific hook functions the default and make the optional
chain type hooks override them.
As a side effect, the necessary code restructuring reduces the code size,
f.i. in case of nf_tables_ipv4.o:
nf_tables_ipv4_init_net | -24
nft_do_chain_ipv4 | -113
2 functions changed, 137 bytes removed, diff: -137
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nft_reject.c: In function 'nft_reject_eval':
net/netfilter/nft_reject.c:37:14: warning: unused variable 'net' [-Wunused-variable]
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The Cubietruck makes use of the first three i2c controllers found on the
Allwinner A20; i2c-0 is used internally for the PMIC, i2c-1 is exposed on
the board headers, and i2c-2 is used for DDC on the VGA connector. This
patch enables them in the device tree.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This value is no longer used by mac80211, and practically no
driver ever set it to a correct value anyway, so remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The omap3_pmx_core pinmux device in the device tree handles the system
controller module (SCM) PADCONFS fonction. Its control registers are
split in two distinct areas, with other SCM registers in-between. Those
other registers can't thus be requested by other drivers as the memory
region gets reserved by the pinmux driver.
Split the omap3_pmx_core device tree node in two for the two memory
regions. The second region address and size depends on the SoC model.
The change in omap3.dtsi fixes an "external abort on non-linefetch" when
doing
cat /sys/kernel/debug/pinctrl/.../pins
on a Nokia N900.
Note that the core2 padconf region is different for 3430 vs 3630,
and does not exist on 3517 as noted by Nishanth Menon <nm@ti.com>.
Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-By: Sebastian Reichel <sre@debian.org>
Signed-off-by: Nishanth Menon <nm@ti.com>
[tony@atomide.com: updated for 3430 vs 3630 core2 based on Nishant's patch]
Signed-off-by: Tony Lindgren <tony@atomide.com>
As we have one to three pinctrl-single instances for each SoC it is
a bit confusing to configure the padconf register offset from the
base of the padconf register base.
Let's add macros that allow using the physical address of the
padconf register directly, or in most cases, just the last 16-bits
of the address as they are shown in the documentation.
Note that most documentation shows two padconf registers for each
32-bit address, so adding 2 to the documentation address is needed for
the second padconf register as we treat them as 16-bit registers
for omap3+.
For example, omap36xx documentation shows sdmmc2_clk at 0x48002158,
so we can just use the last 16-bits of that value:
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x2158, PIN_INPUT_PULLUP | MUX_MODE0)
...
>;
And we don't need to separately calculate the offset from the 0x2030
base:
pinctrl-single,pins = <
0x128 (PIN_INPUT_PULLUP | MUX_MODE0)
...
>;
Naturally both ways of defining the registers can be used, and I'm
not saying we should replace all the existing defines. But it may
be handy to use these macros for new entries and when doing other
related .dts file clean-up.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[tony@atomide.com: updated for 3430 vs 3630 core2 range]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Now that mlx4_en includes a PHC driver it must select PTP_1588_CLOCK.
drivers/built-in.o: In function `mlx4_en_get_ts_info':
>> en_ethtool.c:(.text+0x391a11): undefined reference to `ptp_clock_index'
drivers/built-in.o: In function `mlx4_en_remove_timestamp':
>> (.text+0x397913): undefined reference to `ptp_clock_unregister'
drivers/built-in.o: In function `mlx4_en_init_timestamp':
>> (.text+0x397b20): undefined reference to `ptp_clock_register'
Fixes: ad7d4eaed9 ("mlx4_en: Add PTP hardware clock")
Signed-off-by: Shawn Bohrer <sbohrer@rgmadvisors.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch built on top of Commit 299603e837
("net-gro: Prepare GRO stack for the upcoming tunneling support") to add
the support of the standard GRE (RFC1701/RFC2784/RFC2890) to the GRO
stack. It also serves as an example for supporting other encapsulation
protocols in the GRO stack in the future.
The patch supports version 0 and all the flags (key, csum, seq#) but
will flush any pkt with the S (seq#) flag. This is because the S flag
is not support by GSO, and a GRO pkt may end up in the forwarding path,
thus requiring GSO support to break it up correctly.
Currently the "packet_offload" structure only contains L3 (ETH_P_IP/
ETH_P_IPV6) GRO offload support so the encapped pkts are limited to
IP pkts (i.e., w/o L2 hdr). But support for other protocol type can
be easily added, so is the support for GRE variations like NVGRE.
The patch also support csum offload. Specifically if the csum flag is on
and the h/w is capable of checksumming the payload (CHECKSUM_COMPLETE),
the code will take advantage of the csum computed by the h/w when
validating the GRE csum.
Note that commit 60769a5dcd "ipv4: gre:
add GRO capability" already introduces GRO capability to IPv4 GRE
tunnels, using the gro_cells infrastructure. But GRO is done after
GRE hdr has been removed (i.e., decapped). The following patch applies
GRO when pkts first come in (before hitting the GRE tunnel code). There
is some performance advantage for applying GRO as early as possible.
Also this approach is transparent to other subsystem like Open vSwitch
where GRE decap is handled outside of the IP stack hence making it
harder for the gro_cells stuff to apply. On the other hand, some NICs
are still not capable of hashing on the inner hdr of a GRE pkt (RSS).
In that case the GRO processing of pkts from the same remote host will
all happen on the same CPU and the performance may be suboptimal.
I'm including some rough preliminary performance numbers below. Note
that the performance will be highly dependent on traffic load, mix as
usual. Moreover it also depends on NIC offload features hence the
following is by no means a comprehesive study. Local testing and tuning
will be needed to decide the best setting.
All tests spawned 50 copies of netperf TCP_STREAM and ran for 30 secs.
(super_netperf 50 -H 192.168.1.18 -l 30)
An IP GRE tunnel with only the key flag on (e.g., ip tunnel add gre1
mode gre local 10.246.17.18 remote 10.246.17.17 ttl 255 key 123)
is configured.
The GRO support for pkts AFTER decap are controlled through the device
feature of the GRE device (e.g., ethtool -K gre1 gro on/off).
1.1 ethtool -K gre1 gro off; ethtool -K eth0 gro off
thruput: 9.16Gbps
CPU utilization: 19%
1.2 ethtool -K gre1 gro on; ethtool -K eth0 gro off
thruput: 5.9Gbps
CPU utilization: 15%
1.3 ethtool -K gre1 gro off; ethtool -K eth0 gro on
thruput: 9.26Gbps
CPU utilization: 12-13%
1.4 ethtool -K gre1 gro on; ethtool -K eth0 gro on
thruput: 9.26Gbps
CPU utilization: 10%
The following tests were performed on a different NIC that is capable of
csum offload. I.e., the h/w is capable of computing IP payload csum
(CHECKSUM_COMPLETE).
2.1 ethtool -K gre1 gro on (hence will use gro_cells)
2.1.1 ethtool -K eth0 gro off; csum offload disabled
thruput: 8.53Gbps
CPU utilization: 9%
2.1.2 ethtool -K eth0 gro off; csum offload enabled
thruput: 8.97Gbps
CPU utilization: 7-8%
2.1.3 ethtool -K eth0 gro on; csum offload disabled
thruput: 8.83Gbps
CPU utilization: 5-6%
2.1.4 ethtool -K eth0 gro on; csum offload enabled
thruput: 8.98Gbps
CPU utilization: 5%
2.2 ethtool -K gre1 gro off
2.2.1 ethtool -K eth0 gro off; csum offload disabled
thruput: 5.93Gbps
CPU utilization: 9%
2.2.2 ethtool -K eth0 gro off; csum offload enabled
thruput: 5.62Gbps
CPU utilization: 8%
2.2.3 ethtool -K eth0 gro on; csum offload disabled
thruput: 7.69Gbps
CPU utilization: 8%
2.2.4 ethtool -K eth0 gro on; csum offload enabled
thruput: 8.96Gbps
CPU utilization: 5-6%
Signed-off-by: H.K. Jerry Chu <hkchu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are many cases where this feature does not improve performance or even
reduces it.
For example, here are the results from tests that I've run using 3.12.6 on one
Intel Xeon W3565 and one i7 920 connected by ixgbe adapters. The results are
from the Xeon, but they're similar on the i7. All numbers report the
mean±stddev over 10 runs of 10s.
1) latency tests similar to what is described in "c6e1a0d net: Allow no-cache
copy from user on transmit"
There is no statistically significant difference between tx-nocache-copy
on/off.
nic irqs spread out (one queue per cpu)
200x netperf -r 1400,1
tx-nocache-copy off
692000±1000 tps
50/90/95/99% latency (us): 275±2/643.8±0.4/799±1/2474.4±0.3
tx-nocache-copy on
693000±1000 tps
50/90/95/99% latency (us): 274±1/644.1±0.7/800±2/2474.5±0.7
200x netperf -r 14000,14000
tx-nocache-copy off
86450±80 tps
50/90/95/99% latency (us): 334.37±0.02/838±1/2100±20/3990±40
tx-nocache-copy on
86110±60 tps
50/90/95/99% latency (us): 334.28±0.01/837±2/2110±20/3990±20
2) single stream throughput tests
tx-nocache-copy leads to higher service demand
throughput cpu0 cpu1 demand
(Gb/s) (Gcycle) (Gcycle) (cycle/B)
nic irqs and netperf on cpu0 (1x netperf -T0,0 -t omni -- -d send)
tx-nocache-copy off 9402±5 9.4±0.2 0.80±0.01
tx-nocache-copy on 9403±3 9.85±0.04 0.838±0.004
nic irqs on cpu0, netperf on cpu1 (1x netperf -T1,1 -t omni -- -d send)
tx-nocache-copy off 9401±5 5.83±0.03 5.0±0.1 0.923±0.007
tx-nocache-copy on 9404±2 5.74±0.03 5.523±0.009 0.958±0.002
As a second example, here are some results from Eric Dumazet with latest
net-next.
tx-nocache-copy also leads to higher service demand
(cpu is Intel(R) Xeon(R) CPU X5660 @ 2.80GHz)
lpq83:~# ./ethtool -K eth0 tx-nocache-copy on
lpq83:~# perf stat ./netperf -H lpq84 -c
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpq84.prod.google.com () port 0 AF_INET
Recv Send Send Utilization Service Demand
Socket Socket Message Elapsed Send Recv Send Recv
Size Size Size Time Throughput local remote local remote
bytes bytes bytes secs. 10^6bits/s % S % U us/KB us/KB
87380 16384 16384 10.00 9407.44 2.50 -1.00 0.522 -1.000
Performance counter stats for './netperf -H lpq84 -c':
4282.648396 task-clock # 0.423 CPUs utilized
9,348 context-switches # 0.002 M/sec
88 CPU-migrations # 0.021 K/sec
355 page-faults # 0.083 K/sec
11,812,797,651 cycles # 2.758 GHz [82.79%]
9,020,522,817 stalled-cycles-frontend # 76.36% frontend cycles idle [82.54%]
4,579,889,681 stalled-cycles-backend # 38.77% backend cycles idle [67.33%]
6,053,172,792 instructions # 0.51 insns per cycle
# 1.49 stalled cycles per insn [83.64%]
597,275,583 branches # 139.464 M/sec [83.70%]
8,960,541 branch-misses # 1.50% of all branches [83.65%]
10.128990264 seconds time elapsed
lpq83:~# ./ethtool -K eth0 tx-nocache-copy off
lpq83:~# perf stat ./netperf -H lpq84 -c
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpq84.prod.google.com () port 0 AF_INET
Recv Send Send Utilization Service Demand
Socket Socket Message Elapsed Send Recv Send Recv
Size Size Size Time Throughput local remote local remote
bytes bytes bytes secs. 10^6bits/s % S % U us/KB us/KB
87380 16384 16384 10.00 9412.45 2.15 -1.00 0.449 -1.000
Performance counter stats for './netperf -H lpq84 -c':
2847.375441 task-clock # 0.281 CPUs utilized
11,632 context-switches # 0.004 M/sec
49 CPU-migrations # 0.017 K/sec
354 page-faults # 0.124 K/sec
7,646,889,749 cycles # 2.686 GHz [83.34%]
6,115,050,032 stalled-cycles-frontend # 79.97% frontend cycles idle [83.31%]
1,726,460,071 stalled-cycles-backend # 22.58% backend cycles idle [66.55%]
2,079,702,453 instructions # 0.27 insns per cycle
# 2.94 stalled cycles per insn [83.22%]
363,773,213 branches # 127.757 M/sec [83.29%]
4,242,732 branch-misses # 1.17% of all branches [83.51%]
10.128449949 seconds time elapsed
CC: Tom Herbert <therbert@google.com>
Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we pull a received packet from a link's 'deferred packets' queue
for processing, its 'next' pointer is not cleared, and still refers to
the next packet in that queue, if any. This is incorrect, but caused
no harm before commit 40ba3cdf54 ("tipc:
message reassembly using fragment chain") was introduced. After that
commit, it may sometimes lead to the following oops:
general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC
Modules linked in: tipc
CPU: 4 PID: 0 Comm: swapper/4 Tainted: G W 3.13.0-rc2+ #6
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
task: ffff880017af4880 ti: ffff880017aee000 task.ti: ffff880017aee000
RIP: 0010:[<ffffffff81710694>] [<ffffffff81710694>] skb_try_coalesce+0x44/0x3d0
RSP: 0018:ffff880016603a78 EFLAGS: 00010212
RAX: 6b6b6b6bd6d6d6d6 RBX: ffff880013106ac0 RCX: ffff880016603ad0
RDX: ffff880016603ad7 RSI: ffff88001223ed00 RDI: ffff880013106ac0
RBP: ffff880016603ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88001223ed00
R13: ffff880016603ad0 R14: 000000000000058c R15: ffff880012297650
FS: 0000000000000000(0000) GS:ffff880016600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 000000000805b000 CR3: 0000000011f5d000 CR4: 00000000000006e0
Stack:
ffff880016603a88 ffffffff810a38ed ffff880016603aa8 ffff88001223ed00
0000000000000001 ffff880012297648 ffff880016603b68 ffff880012297650
ffff880016603b08 ffffffffa0006c51 ffff880016603b08 00ffffffa00005fc
Call Trace:
<IRQ>
[<ffffffff810a38ed>] ? trace_hardirqs_on+0xd/0x10
[<ffffffffa0006c51>] tipc_link_recv_fragment+0xd1/0x1b0 [tipc]
[<ffffffffa0007214>] tipc_recv_msg+0x4e4/0x920 [tipc]
[<ffffffffa00016f0>] ? tipc_l2_rcv_msg+0x40/0x250 [tipc]
[<ffffffffa000177c>] tipc_l2_rcv_msg+0xcc/0x250 [tipc]
[<ffffffffa00016f0>] ? tipc_l2_rcv_msg+0x40/0x250 [tipc]
[<ffffffff8171e65b>] __netif_receive_skb_core+0x80b/0xd00
[<ffffffff8171df94>] ? __netif_receive_skb_core+0x144/0xd00
[<ffffffff8171eb76>] __netif_receive_skb+0x26/0x70
[<ffffffff8171ed6d>] netif_receive_skb+0x2d/0x200
[<ffffffff8171fe70>] napi_gro_receive+0xb0/0x130
[<ffffffff815647c2>] e1000_clean_rx_irq+0x2c2/0x530
[<ffffffff81565986>] e1000_clean+0x266/0x9c0
[<ffffffff81985f7b>] ? notifier_call_chain+0x2b/0x160
[<ffffffff8171f971>] net_rx_action+0x141/0x310
[<ffffffff81051c1b>] __do_softirq+0xeb/0x480
[<ffffffff819817bb>] ? _raw_spin_unlock+0x2b/0x40
[<ffffffff810b8c42>] ? handle_fasteoi_irq+0x72/0x100
[<ffffffff81052346>] irq_exit+0x96/0xc0
[<ffffffff8198cbc3>] do_IRQ+0x63/0xe0
[<ffffffff81981def>] common_interrupt+0x6f/0x6f
<EOI>
This happens when the last fragment of a message has passed through the
the receiving link's 'deferred packets' queue, and at least one other
packet was added to that queue while it was there. After the fragment
chain with the complete message has been successfully delivered to the
receiving socket, it is released. Since 'next' pointer of the last
fragment in the released chain now is non-NULL, we get the crash shown
above.
We fix this by clearing the 'next' pointer of all received packets,
including those being pulled from the 'deferred' queue, before they
undergo any further processing.
Fixes: 40ba3cdf54 ("tipc: message reassembly using fragment chain")
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Reported-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When lo is brought up, new ifa is created. Then, devconf and neigh values
bitfield should be set so later changes of default values would not
affect lo values.
Note that the same behaviour is in ipv6. Also note that this is likely
not an issue in many distros (for example Fedora 19) because userspace
sets address to lo manually before bringing it up.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This change allows to follow a recommandation of RFC4942.
- Add "anycast_src_echo_reply" sysctl to control the use of anycast addresses
as source addresses for ICMPv6 echo reply. This sysctl is false by default
to preserve existing behavior.
- Add inline check ipv6_anycast_destination().
- Use them in icmpv6_echo_reply().
Reference:
RFC4942 - IPv6 Transition/Coexistence Security Considerations
(http://tools.ietf.org/html/rfc4942#section-2.1.6)
2.1.6. Anycast Traffic Identification and Security
[...]
To avoid exposing knowledge about the internal structure of the
network, it is recommended that anycast servers now take advantage of
the ability to return responses with the anycast address as the
source address if possible.
Signed-off-by: Francois-Xavier Le Bail <fx.lebail@yahoo.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix to return a negative error code from the error handling
case instead of 0.
Fixes: 837052d0cc ('net/mlx4_en: Add netdev support for TCP/IP offloads of vxlan tunneling')
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
We're accessing the PCI_COMMAND register here, so use the appropriate
#define. The bit we're writing (1 << 14) isn't defined by the PCI or PCIe
spec, so we don't have a name for it.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
In i810_setup(), i830_setup(), and i9xx_setup(), we use the result of
pci_bus_address() as an argument to ioremap() and to compute gtt_phys_addr.
These should use pci_resource_start() instead because we want the CPU
physical address, not the bus address.
If there were an AGP device behind a host bridge that translated addresses,
e.g., a PNP0A08 device with _TRA != 0, this would fix a bug. I'm not aware
of any of those, but they are possible.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Per the Intel 915G/915GV/... Chipset spec (document number 301467-005),
GTTADR is a standard PCI BAR.
The PCI core reads GTTADR at enumeration-time. Use pci_bus_address()
instead of reading it again in the driver. This works correctly for both
32-bit and 64-bit BARs. The spec above only mentions 32-bit GTTADR, but we
should still use the standard interface.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Per the Intel 915G/915GV/... Chipset spec (document number 301467-005),
MMADR is a standard PCI BAR.
The PCI core reads MMADR at enumeration-time. Use pci_bus_address()
instead of reading it again in the driver. This works correctly for both
32-bit and 64-bit BARs. The spec above only mentions 32-bit MMADR, but we
should still use the standard interface.
Also, stop clearing the low 19 bits of the bus address because it's invalid
to use addresses outside the region defined by the BAR. The spec claims
MMADR is 512KB; if that's the case, those bits will be zero anyway.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Per the Intel 915G/915GV/... Chipset spec (document number 301467-005),
GMADR is a standard PCI BAR.
The PCI core reads GMADR at enumeration-time. Use pci_bus_address()
instead of reading it again in the driver. This works correctly for both
32-bit and 64-bit BARs. The spec above only mentions 32-bit GMADR, but
Yinghai's patch (link below) indicates some devices have a 64-bit GMADR.
[bhelgaas: reworked starting from http://lkml.kernel.org/r/1385851238-21085-13-git-send-email-yinghai@kernel.org]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The only use of gtt_bus_addr is as an argument to ioremap(), so it is a CPU
physical address, not a bus address. Rename it to gtt_phys_addr to reflect
this.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We're dealing with CPU physical addresses here, which may be different from
bus addresses, so rename gtt_bus_addr to gtt_phys_addr to avoid confusion.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
amd_irongate_configure(), ati_configure(), and nvidia_configure() call
ioremap() on an address read directly from a BAR. But a BAR contains a
bus address, and ioremap() expects a CPU physical address. Use
pci_resource_start() to obtain the physical address.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The comparison is always true and the compiler optimizes it out anyway.
Milan offered additional context relative to the original commit
784aae735d ("dm: add name and uuid to sysfs") which introduced the code:
"I think it is just relict of some experiments before I committed this
simple embedded sysfs kobj handling".
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Since request_muxed_region() is used to synchronize access on the
Super-I/O controller, then the can_sleep attribute must be set for
the f7188x GPIO chips.
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hardware.h inclusion is no longer needed. Update the documentation section
related to it and fix a file path.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The contents of this header file are not referenced in the driver.
Remove its inclusion.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Prevent build failure when the selected variant does not support GPIO32.
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Some BE DAIs can be "dummy" (when the DSP is controlling the DAI) and as such
wont have set a minimum number of playback or capture channels required for BE
DAI registration (to establish supported stream directions).
Force machine drivers to explicitly set whether they support playback and capture
stream directions for every BE DAIs.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Update the ASoC overview to bring it up to date with the current code base
and include multi-component.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This reverts commit 787b0d5c1c since
it is no longer required after 7909/1 was applied, and it causes
build regressions when ARM_PATCH_PHYS_VIRT is disabled and DMA_ZONE
is enabled.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
There is no reason to keep the OF data if the driver was compiled
without DT support.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch sets the correct rf tech value and crc functions in target
mode when receiving a PSL_REQ, as done when receiving an ATR_REQ.
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The curr_protocol field of nfc_digital_dev structure used to determine
if a target is currently active was set too soon, immediately when a
target is found. This is not good since there is no other way than
deactivate_target() to reset curr_protocol and if activate_target() is
not called, the target remains active and it's not possible to put the
device in poll mode anymore.
With this patch curr_protocol is set when nfc core activates a target,
puts a device up, or when an ATR_REQ is received in target mode.
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Convert to the safer gpiod_* family of API functions.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit c67d0f2926 ("ARM: s3c24xx: get rid of custom <mach/gpio.h>")
removed the usage of mach/gpio.h file, but we need to include>
plat/gpio-cfg.h to avoid following build error.
Fixes following build error.
drivers/leds/leds-s3c24xx.c: In function ‘s3c24xx_led_probe’:
drivers/leds/leds-s3c24xx.c💯2: error: implicit declaration of
function ‘s3c_gpio_setpull’ [-Werror=implicit-function-declaration]
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
this gives ability to convey the valid values of supported rates in
sample_rates array
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
There is a race in the hub driver between hub_disconnect() and
recursively_mark_NOTATTACHED(). This race can be triggered if the
driver is unbound from a device at the same time as the bus's root hub
is removed. When the race occurs, it can cause an oops:
BUG: unable to handle kernel NULL pointer dereference at 0000015c
IP: [<c16d5fb0>] recursively_mark_NOTATTACHED+0x20/0x60
Call Trace:
[<c16d5fc4>] recursively_mark_NOTATTACHED+0x34/0x60
[<c16d5fc4>] recursively_mark_NOTATTACHED+0x34/0x60
[<c16d5fc4>] recursively_mark_NOTATTACHED+0x34/0x60
[<c16d5fc4>] recursively_mark_NOTATTACHED+0x34/0x60
[<c16d6082>] usb_set_device_state+0x92/0x120
[<c16d862b>] usb_disconnect+0x2b/0x1a0
[<c16dd4c0>] usb_remove_hcd+0xb0/0x160
[<c19ca846>] ? _raw_spin_unlock_irqrestore+0x26/0x50
[<c1704efc>] ehci_mid_remove+0x1c/0x30
[<c1704f26>] ehci_mid_stop_host+0x16/0x30
[<c16f7698>] penwell_otg_work+0xd28/0x3520
[<c19c945b>] ? __schedule+0x39b/0x7f0
[<c19cdb9d>] ? sub_preempt_count+0x3d/0x50
[<c125e97d>] process_one_work+0x11d/0x3d0
[<c19c7f4d>] ? mutex_unlock+0xd/0x10
[<c125e0e5>] ? manage_workers.isra.24+0x1b5/0x270
[<c125f009>] worker_thread+0xf9/0x320
[<c19ca846>] ? _raw_spin_unlock_irqrestore+0x26/0x50
[<c125ef10>] ? rescuer_thread+0x2b0/0x2b0
[<c1264ac4>] kthread+0x94/0xa0
[<c19d0f77>] ret_from_kernel_thread+0x1b/0x28
[<c1264a30>] ? kthread_create_on_node+0xc0/0xc0
One problem is that recursively_mark_NOTATTACHED() uses the intfdata
value and hub->hdev->maxchild while hub_disconnect() is clearing them.
Another problem is that it uses hub->ports[i] while the port device is
being released.
To fix this race, we need to hold the device_state_lock while
hub_disconnect() changes the values. (Note that usb_disconnect()
and hub_port_connect_change() already acquire this lock at similar
critical times during a USB device's life cycle.) We also need to
remove the port devices after maxchild has been set to 0, instead of
before.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: "Du, Changbin" <changbinx.du@intel.com>
Tested-by: "Du, Changbin" <changbinx.du@intel.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After commit 99f14bd4d1 "Merge 3.13-rc5 into usb-next" (in linux-next as of
today), I'm getting this error building any at91 kernel:
drivers/usb/host/ohci-at91.c: In function 'usb_hcd_at91_probe':
drivers/usb/host/ohci-at91.c:190:4: error: label 'err' used but not defined
goto err;
^
drivers/usb/host/ohci-at91.c: At top level:
drivers/usb/host/ohci-at91.c:206:2: warning: data definition has no type or storage class [enabled by default]
at91_stop_hc(pdev);
^
...
The problem is obviously a mismerge between two unrelated changes that
resulted in missing opening braces.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
