| Commit message (Collapse) | Author | Age |
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When SR-IOV is enabled, i350 devices fail to pass traffic. This is due to
the driver attempting to enable RSS on the PF device, which is not
supported by the i350.
When max_vfs is specified on an i350 adapter, set the number of RSS queues
to 1.
This issue affects 2.6.39 as well.
CC: stable@kernel.org
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Frank Blaschka reported :
<quote>
During heavy network load we turn off/on cpus.
Sometimes this causes a stall on the network device.
Digging into the dump I found out following:
napi is scheduled but does not run. From the I/O buffers
and the napi state I see napi/rx_softirq processing has stopped
because the budget was reached. napi stays in the
softnet_data poll_list and the rx_softirq was raised again.
I assume at this time the cpu offline comes in,
the rx softirq is raised/moved to another cpu but napi stays in the
poll_list of the softnet_data of the now offline cpu.
Reviewing dev_cpu_callback (net/core/dev.c) I did not find the
poll_list is transfered to the new cpu.
</quote>
This patch is a straightforward implementation of Frank suggestion :
Transfert poll_list and trigger NET_RX_SOFTIRQ on new cpu.
Reported-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Like in commit 0972ddb237 (provide cow_metrics() methods to blackhole
dst_ops), we must provide a cow_metrics for bridges fake_dst_ops as
well.
This fixes a regression coming from commits 62fa8a846d7d (net: Implement
read-only protection and COW'ing of metrics.) and 33eb9873a28 (bridge:
initialize fake_rtable metrics)
ip link set mybridge mtu 1234
-->
[ 136.546243] Pid: 8415, comm: ip Tainted: P
2.6.39.1-00006-g40545b7 #103 ASUSTeK Computer Inc. V1Sn
/V1Sn
[ 136.546256] EIP: 0060:[<00000000>] EFLAGS: 00010202 CPU: 0
[ 136.546268] EIP is at 0x0
[ 136.546273] EAX: f14a389c EBX: 000005d4 ECX: f80d32c0 EDX: f80d1da1
[ 136.546279] ESI: f14a3000 EDI: f255bf10 EBP: f15c3b54 ESP: f15c3b48
[ 136.546285] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 136.546293] Process ip (pid: 8415, ti=f15c2000 task=f4741f80
task.ti=f15c2000)
[ 136.546297] Stack:
[ 136.546301] f80c658f f14a3000 ffffffed f15c3b64 c12cb9c8 f80d1b80
ffffffa1 f15c3bbc
[ 136.546315] c12da347 c12d9c7d 00000000 f7670b00 00000000 f80d1b80
ffffffa6 f15c3be4
[ 136.546329] 00000004 f14a3000 f255bf20 00000008 f15c3bbc c11d6cae
00000000 00000000
[ 136.546343] Call Trace:
[ 136.546359] [<f80c658f>] ? br_change_mtu+0x5f/0x80 [bridge]
[ 136.546372] [<c12cb9c8>] dev_set_mtu+0x38/0x80
[ 136.546381] [<c12da347>] do_setlink+0x1a7/0x860
[ 136.546390] [<c12d9c7d>] ? rtnl_fill_ifinfo+0x9bd/0xc70
[ 136.546400] [<c11d6cae>] ? nla_parse+0x6e/0xb0
[ 136.546409] [<c12db931>] rtnl_newlink+0x361/0x510
[ 136.546420] [<c1023240>] ? vmalloc_sync_all+0x100/0x100
[ 136.546429] [<c1362762>] ? error_code+0x5a/0x60
[ 136.546438] [<c12db5d0>] ? rtnl_configure_link+0x80/0x80
[ 136.546446] [<c12db27a>] rtnetlink_rcv_msg+0xfa/0x210
[ 136.546454] [<c12db180>] ? __rtnl_unlock+0x20/0x20
[ 136.546463] [<c12ee0fe>] netlink_rcv_skb+0x8e/0xb0
[ 136.546471] [<c12daf1c>] rtnetlink_rcv+0x1c/0x30
[ 136.546479] [<c12edafa>] netlink_unicast+0x23a/0x280
[ 136.546487] [<c12ede6b>] netlink_sendmsg+0x26b/0x2f0
[ 136.546497] [<c12bb828>] sock_sendmsg+0xc8/0x100
[ 136.546508] [<c10adf61>] ? __alloc_pages_nodemask+0xe1/0x750
[ 136.546517] [<c11d0602>] ? _copy_from_user+0x42/0x60
[ 136.546525] [<c12c5e4c>] ? verify_iovec+0x4c/0xc0
[ 136.546534] [<c12bd805>] sys_sendmsg+0x1c5/0x200
[ 136.546542] [<c10c2150>] ? __do_fault+0x310/0x410
[ 136.546549] [<c10c2c46>] ? do_wp_page+0x1d6/0x6b0
[ 136.546557] [<c10c47d1>] ? handle_pte_fault+0xe1/0x720
[ 136.546565] [<c12bd1af>] ? sys_getsockname+0x7f/0x90
[ 136.546574] [<c10c4ec1>] ? handle_mm_fault+0xb1/0x180
[ 136.546582] [<c1023240>] ? vmalloc_sync_all+0x100/0x100
[ 136.546589] [<c10233b3>] ? do_page_fault+0x173/0x3d0
[ 136.546596] [<c12bd87b>] ? sys_recvmsg+0x3b/0x60
[ 136.546605] [<c12bdd83>] sys_socketcall+0x293/0x2d0
[ 136.546614] [<c13629d0>] sysenter_do_call+0x12/0x26
[ 136.546619] Code: Bad EIP value.
[ 136.546627] EIP: [<00000000>] 0x0 SS:ESP 0068:f15c3b48
[ 136.546645] CR2: 0000000000000000
[ 136.546652] ---[ end trace 6909b560e78934fa ]---
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In 2.6.27, commit 393e52e33c6c2 (packet: deliver VLAN TCI to userspace)
added a small information leak.
Add padding field and make sure its zeroed before copy to user.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The SEQ output functions grab the obj->attrib->hb_spinlock lock of
sub-objects found in the hash traversal. These locks are in a different
realm than the one used for the irias_objects hash table itself.
So put the latter into it's own lockdep class.
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This interface uses a temporary buffer, but for no real reason.
And now can generate warnings like:
net/sched/sch_generic.c: In function dev_watchdog
net/sched/sch_generic.c:254:10: warning: unused variable drivername
Just return driver->name directly or "".
Reported-by: Connor Hansen <cmdkhh@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Same check as for IPv4, also do for IPv6.
(If you passed in a IPv4 sockaddr_in here, the sizeof check
in the line before would have triggered already though.)
Signed-off-by: Marcus Meissner <meissner@suse.de>
Cc: Reinhard Max <max@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into for-davem
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Commit 06e8935febe687e2a561707d4c7ca4245d261dbe adds an IRQ handling
optimization for single-function SDIO cards like this one, but at the
same time exposes a small hardware bug.
During hardware init, an interrupt is generated with (apparently) no
source. Previously, mmc threw this interrupt away, but now (due to the
optimization), the mmc layer passes this onto libertas, before it is ready
(and before it has enabled interrupts), causing a crash.
Work around this hardware bug by registering the IRQ handler later and
making it capable of handling interrupts with no cause. The change that
makes the IRQ handler registration happen later actually eliminates
the spurious interrupt as well.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This partially reverts 1c5cae815d19ffe02bdfda1260949ef2b1806171, because
the netdev name is copied into sdata->name, which is used for debugging
messages, for example. Otherwise, we get messages like this:
wlan%d: authenticated
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Jiri Pirko <jpirko@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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We use priv->mutex to avoid race conditions between iwl_chswitch_done()
and iwlagn_mac_channel_switch(), when marking channel switch in
progress. But iwl_chswitch_done() can be called in atomic context
from iwl_rx_csa() or with mutex already taken from iwlagn_commit_rxon().
These bugs were introduced by:
commit 79d07325502e73508f917475bc1617b60979dd94
Author: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date: Thu May 6 08:54:11 2010 -0700
iwlwifi: support channel switch offload in driver
To fix remove mutex from iwl_chswitch_done() and use atomic bitops for
marking channel switch pending.
Also remove iwl2030_hw_channel_switch() since 2000 series adapters are
2.4GHz only devices.
Cc: stable@kernel.org # 2.6.36+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Disable fast channel change by default on AR2413/AR5413 due to
some bug reports (it still works for me but it's better to be safe).
Add a module parameter "fastchanswitch" in case anyone wants to enable
it and play with it.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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We were incorrectly executing PCIe specific workarounds on PCI cards.
This resulted in:
Machine check in kernel mode.
Caused by (from SRR1=149030): Transfer error ack signal
Oops: Machine check, sig: 7 [#1]
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Netlink message lengths can't be negative, so use unsigned variables.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes a refcount leak of ct objects that may occur if
l4proto->error() assigns one conntrack object to one skbuff. In
that case, we have to skip further processing in nf_conntrack_in().
With this patch, we can also fix wrong return values (-NF_ACCEPT)
for special cases in ICMP[v6] that should not bump the invalid/error
statistic counters.
Reported-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Fix crash in nf_nat_csum when mangling packets
in OUTPUT hook where skb->dev is not defined, it is set
later before POSTROUTING. Problem happens for CHECKSUM_NONE.
We can check device from rt but using CHECKSUM_PARTIAL
should be safe (skb_checksum_help).
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The stored cidr values are tried one after anoter. The boolean
condition evaluated to '1' instead of the first stored cidr or
the default host cidr.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Fix the IPVS priority in LOCAL_IN hook,
so that SNAT target in POSTROUTING is supported for IPVS
traffic as in 2.6.36 where it worked depending on
module load order.
Before 2.6.37 we used priority 100 in LOCAL_IN to
process remote requests. We used the same priority as
iptables SNAT and if IPVS handlers are installed before
SNAT handlers we supported SNAT in POSTROUTING for the IPVS
traffic. If SNAT is installed before IPVS, the netfilter
handlers are before IPVS and netfilter checks the NAT
table twice for the IPVS requests: once in LOCAL_IN where
IPS_SRC_NAT_DONE is set and second time in POSTROUTING
where the SNAT rules are ignored because IPS_SRC_NAT_DONE
was already set in LOCAL_IN.
But in 2.6.37 we changed the IPVS priority for
LOCAL_IN with the goal to be unique (101) forgetting the
fact that for IPVS traffic we should not walk both
LOCAL_IN and POSTROUTING nat tables.
So, change the priority for processing remote
IPVS requests from 101 to 99, i.e. before NAT_SRC (100)
because we prefer to support SNAT in POSTROUTING
instead of LOCAL_IN. It also moves the priority for
IPVS replies from 99 to 98. Use constants instead of
magic numbers at these places.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Following error is raised (and other similar ones) :
net/ipv4/netfilter/nf_nat_standalone.c: In function ‘nf_nat_fn’:
net/ipv4/netfilter/nf_nat_standalone.c:119:2: warning: case value ‘4’
not in enumerated type ‘enum ip_conntrack_info’
gcc barfs on adding two enum values and getting a not enumerated
result :
case IP_CT_RELATED+IP_CT_IS_REPLY:
Add missing enum values
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Fix missing semicolon at end of smc91x.c match tabledevice driver.
Also remove unnecessary #ifdef around of_match_table pointer.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The bonding driver is multiqueue enabled, in which each queue represents a slave
to enable optional steering of output frames to given slaves against the default
output policy. However, it needs to reset the skb->queue_mapping prior to
queuing to the physical device or the physical slave (if it is multiqueue) could
wind up transmitting on an unintended tx queue
Change Notes:
v2) Based on first pass review, updated the patch to restore the origional queue
mapping that was found in bond_select_queue, rather than simply resetting to
zero. This preserves the value of queue_mapping when it was set on receive in
the forwarding case which is desireable.
v3) Fixed spelling an casting error in skb->cb
v4) fixed to store raw queue_mapping to avoid double decrement
v5) Eric D requested that ->cb access be wrapped in a macro.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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buffer->skb should be marked NULL to avoid double free of the skb.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Due to a change in FW template, a bug was introduced in dump queue entries. This is
fixed by reinitializing queue address before looping for each que dump operation.
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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More fallout from struct net lifetime rules review: PTR_ERR() is *already*
negative and failing ->open() should return negatives on failure.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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BTW, looking through the code related to struct net lifetime rules has
caught something else:
struct net *get_net_ns_by_fd(int fd)
{
...
file = proc_ns_fget(fd);
if (!file)
goto out;
ei = PROC_I(file->f_dentry->d_inode);
while in proc_ns_fget() we have two return ERR_PTR(...) and not a single
path that would return NULL. The other caller of proc_ns_fget() treats
ERR_PTR() correctly...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
AppArmor: Fix sleep in invalid context from task_setrlimit
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Affected kernels 2.6.36 - 3.0
AppArmor may do a GFP_KERNEL memory allocation with task_lock(tsk->group_leader);
held when called from security_task_setrlimit. This will only occur when the
task's current policy has been replaced, and the task's creds have not been
updated before entering the LSM security_task_setrlimit() hook.
BUG: sleeping function called from invalid context at mm/slub.c:847
in_atomic(): 1, irqs_disabled(): 0, pid: 1583, name: cupsd
2 locks held by cupsd/1583:
#0: (tasklist_lock){.+.+.+}, at: [<ffffffff8104dafa>] do_prlimit+0x61/0x189
#1: (&(&p->alloc_lock)->rlock){+.+.+.}, at: [<ffffffff8104db2d>]
do_prlimit+0x94/0x189
Pid: 1583, comm: cupsd Not tainted 3.0.0-rc2-git1 #7
Call Trace:
[<ffffffff8102ebf2>] __might_sleep+0x10d/0x112
[<ffffffff810e6f46>] slab_pre_alloc_hook.isra.49+0x2d/0x33
[<ffffffff810e7bc4>] kmem_cache_alloc+0x22/0x132
[<ffffffff8105b6e6>] prepare_creds+0x35/0xe4
[<ffffffff811c0675>] aa_replace_current_profile+0x35/0xb2
[<ffffffff811c4d2d>] aa_current_profile+0x45/0x4c
[<ffffffff811c4d4d>] apparmor_task_setrlimit+0x19/0x3a
[<ffffffff811beaa5>] security_task_setrlimit+0x11/0x13
[<ffffffff8104db6b>] do_prlimit+0xd2/0x189
[<ffffffff8104dea9>] sys_setrlimit+0x3b/0x48
[<ffffffff814062bb>] system_call_fastpath+0x16/0x1b
Signed-off-by: John Johansen <john.johansen@canonical.com>
Reported-by: Miles Lane <miles.lane@gmail.com>
Cc: stable@kernel.org
Signed-off-by: James Morris <jmorris@namei.org>
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It uses cpu_relax(), and so needs <asm/processor.h>
Without this patch, I see:
CC arch/mn10300/kernel/asm-offsets.s
In file included from include/linux/time.h:8,
from include/linux/timex.h:56,
from include/linux/sched.h:57,
from arch/mn10300/kernel/asm-offsets.c:7:
include/linux/seqlock.h: In function 'read_seqbegin':
include/linux/seqlock.h:91: error: implicit declaration of function 'cpu_relax'
whilst building asb2364_defconfig on MN10300.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata: fix unexpectedly frozen port after ata_eh_reset()
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To work around controllers which can't properly plug events while
reset, ata_eh_reset() clears error states and ATA_PFLAG_EH_PENDING
after reset but before RESET is marked done. As reset is the final
recovery action and full verification of devices including onlineness
and classfication match is done afterwards, this shouldn't lead to
lost devices or missed hotplug events.
Unfortunately, it forgot to thaw the port when clearing EH_PENDING, so
if the condition happens after resetting an empty port, the port could
be left frozen and EH will end without thawing it, making the port
unresponsive to further hotplug events.
Thaw if the port is frozen after clearing EH_PENDING. This problem is
reported by Bruce Stenning in the following thread.
http://thread.gmane.org/gmane.linux.kernel/1123265
stable: I think we should weather this patch a bit longer in -rcX
before sending it to -stable. Please wait at least a month
after this patch makes upstream. Thanks.
-v2: Fixed spelling in the comment per Dave Howorth.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Bruce Stenning <b.stenning@indigovision.com>
Cc: stable@kernel.org
Cc: Dave Howorth <dhoworth@mrc-lmb.cam.ac.uk>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc32, leon: bugfix in LEON SMP interrupt init
sparc32, sun4m: bugfix in SMP IPI traphandler
sparc: Remove unnecessary semicolons
Add support for allocating irqs for bootbus devices
Do not skip interrupt sources in sun4d interrupt handler and acknowledge interrupts correctly
Restructure sun4d_build_device_irq so that timer interrupts can be allocated
sparc: PCIC_PCI needs SPARC32 dependency
sparc: Do not select GENERIC_HARDIRQS_NO_DEPRECATED
sparc32,leon: add GRPCI2 PCI Host driver
sparc32,leon: added LEON-common low-level PCI routines
sparc32: added CONFIG_PCIC_PCI Kconfig setting
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During converting per-cpu ticker to genirq layer some
IRQ initialization code was removed by commit
2cf9530420e446bb61f665d02afeb81070106900 ("sparc32,leon:
per-cpu ticker use genirq per-cpu handler").
This patch reintroduces the code at the same place it was
removed from. IRQ12 - IRQ14 will crash on LEON SMP without
this patch because it will run the SUN4M IRQ trap handler.
Reported-by: Jan Andersson <jan@gaisler.com>
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Three new IPIs were introduced by commit
ecbc42b70acbc6327adefe9635db93fcf62bf59d ("sparc32, sun4m:
Implemented SMP IPIs support for SUN4M machines"), the
old handler was already prepared for IPIs but handled only
IRQ14 and IRQ13, this patch adds support for the new IPI at
IRQ12.
The IPI trap handler looks at the mask rather than the
pending IRQ/IPI, this bug may have masked the problem
above, introduced by the same commit.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Semicolons are not necessary after switch/while/for/if braces
so remove them.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some devices that can generate interrupts are connected directly to the
CPU through the bootbus on sun4d. This patch allows IRQs to be allocated
for such devices. The information used for allocating interrupts for
sbus devices are present at the corresponding SBI node. For bootbus
devices this information is present in the bootbus node.
Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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interrupts correctly
During the introduction of genirq on sparc32 bugs were introduced in
the interrupt handler for sun4d. The interrupts handler checks the status
of the various sbus interfaces in the system and generates a virtual
interrupt, based upon the location of the interrupt source. This lookup
was broken by restructuring the code in such a way that index and shift
operations were performed prior to comparing this against the values
read from the interrupt controllers.
This could cause the handler to loop eternally as the interrupt source
could be skipped before any check was performed. Additionally
sun4d_encode_irq performs shifting internally, so it should not be performed
twice.
In sun4d_unmask interrupts were not correctly acknowledged, as the
corresponding bit it the interrupt mask was not actually cleared.
Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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sun4d_build_device_irq was called without a valid platform_device when
the system timer was initialized on sun4d systems. This caused a NULL
pointer crash.
Josip Rodin suggested that the current sun4d_build_device_irq should be
split into two functions. So that the timer initialization could skip
the slot and sbus interface detection code in sun4d_build_device_irq, as
this does not make sence due to the timer interrupts not being generated
from a device located on sbus.
Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Config option GENERIC_HARDIRQS_NO_DEPRECATED was removed in commit
78c89825649a9a5ed526c507603196f467d781a5 ("genirq: Remove the now obsolete
config options and select statements"), but the select was accidentally
reintroduced in commit 6baa9b20a68a88c2fd751cbe8d7652009379351b
("sparc32: genirq support")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The DMA region must be accessible in order for PCI peripheral
drivers to work, the sparc32 has DMA in the normal memory
zone which requires the GRPCI2 to PCI target BARs so that all
kernel low mem (192MB) can be mapped 1:1 to PCI address
space. The GRPCI2 has resizeable target BARs, by default the
first is made 256MB and all other BARs are disabled.
I/O space are always located on 0x1000-0x10000, but accessed
through the GRPCI2 PCI I/O Window memory mapped to virtual
address space.
Configuration space is accessed through the 64KB GRPCI2 PCI
CFG Window using LDA bypassing the MMU.
The GRPCI2 has a single PCI Window for prefetchable and non-
prefetchable address space, it is up to the AHB master
requesting PCI data to determine access type. Memory space
is mapped 1:1.
The GRPCI2 core can be configured in 4 different IRQ modes,
where PCI Interrupt, Error Interrupt and DMA Interrupt are
shared on a single IRQ line or at most 5 IRQs are used. The
GRPCI2 can mask/unmask PCI interrupts, Err and DMA in the control
and check status bits which tells us which IRQ really happended.
The GENIRQ layer is used to unmask/mask each individual IRQ
source by creating virtual IRQs and implementing a IRQ chip.
The optional DMA functionality of the GRPCI2 is not supported
by this patch.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The LEON architecture does not have a BIOS or bootloader that
initializes PCI for us, instead Linux generic PCI layer is used
to set up resources and IRQ.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
perf: Use make kernelversion instead of parsing the Makefile
kbuild: Hack for depmod not handling X.Y versions
kbuild: Move depmod call to a separate script
kbuild: Fix <linux/version.h> for empty SUBLEVEL or PATCHLEVEL
kbuild: Fix KERNELVERSION for empty SUBLEVEL or PATCHLEVEL
kbuild: silence Nothing to be done for 'all' message
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Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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depmod from module-init-tools < 3.13 and the busybox depmod check if the
kernel release starts with <num>.<num>.<num>. To support these versions,
we create a symlink with two numbers prepended.
Signed-off-by: Michal Marek <mmarek@suse.cz>
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Do not bloat the Makefile with multiline shell statements. No
user-visible change intended.
Signed-off-by: Michal Marek <mmarek@suse.cz>
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expr treats all numbers as decimals, so prepending a zero is safe. Note
that the KERNEL_VERSION() macro still takes three arguments, 3.0 has to be
written as KERNEL_VERSION(3,0,0).
Signed-off-by: Michal Marek <mmarek@suse.cz>
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