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Following Cavium's acquisition of qlogic we need to update all the qlogic
drivers maintainer's entries to point to our new e-mail addresses,
as well as update some of the driver's maintainers as those are no longer
working for Cavium.
I would like to thank Sony Chacko and Rajesh Borundia for their support
and development of our various networking drivers.
Signed-off-by: Yuval Mintz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The Hyper-V netvsc driver was looking at the incorrect status bits
in the checksum info. It was setting the receive checksum unnecessary
flag based on the IP header checksum being correct. The checksum
flag is skb is about TCP and UDP checksum status. Because of this
bug, any packet received with bad TCP checksum would be passed
up the stack and to the application causing data corruption.
The problem is reproducible via netcat and netem.
This had a side effect of not doing receive checksum offload
on IPv6. The driver was also also always doing checksum offload
independent of the checksum setting done via ethtool.
Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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First bug was added in commit ad6f939ab193 ("ip: Add offset parameter to
ip_cmsg_recv") : Tom missed that ipv4 udp messages could be received on
AF_INET6 socket. ip_cmsg_recv(msg, skb) should have been replaced by
ip_cmsg_recv_offset(msg, skb, sizeof(struct udphdr));
Then commit e6afc8ace6dd ("udp: remove headers from UDP packets before
queueing") forgot to adjust the offsets now UDP headers are pulled
before skb are put in receive queue.
Fixes: ad6f939ab193 ("ip: Add offset parameter to ip_cmsg_recv")
Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Sam Kumar <[email protected]>
Cc: Willem de Bruijn <[email protected]>
Tested-by: Willem de Bruijn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Commit 7303a1475008 ("sctp: identify chunks that need to be fragmented
at IP level") made the chunk be fragmented at IP level in the next round
if it's size exceed PMTU.
But there still is another case, PMTU can be updated if transport's dst
expires and transport's pmtu_pending is set in sctp_packet_transmit. If
the new PMTU is less than the chunk, the same issue with that commit can
be triggered.
So we should drop this packet and let it retransmit in another round
where it would be fragmented at IP level.
This patch is to fix it by checking the chunk size after PMTU may be
updated and dropping this packet if it's size exceed PMTU.
Fixes: 90017accff61 ("sctp: Add GSO support")
Signed-off-by: Xin Long <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The skbuff and sock structure both had missing parameter annotation
values.
Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Fix to return error code -EINVAL from the error handling
case instead of 0, as done elsewhere in this function.
Fixes: e420114eef4a ("rocker: introduce worlds infrastructure")
Signed-off-by: Wei Yongjun <[email protected]>
Acked-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The VFIO_DEVICE_SET_IRQS ioctl did not sufficiently sanitize
user-supplied integers, potentially allowing memory corruption. This
patch adds appropriate integer overflow checks, checks the range bounds
for VFIO_IRQ_SET_DATA_NONE, and also verifies that only single element
in the VFIO_IRQ_SET_DATA_TYPE_MASK bitmask is set.
VFIO_IRQ_SET_ACTION_TYPE_MASK is already correctly checked later in
vfio_pci_set_irqs_ioctl().
Furthermore, a kzalloc is changed to a kcalloc because the use of a
kzalloc with an integer multiplication allowed an integer overflow
condition to be reached without this patch. kcalloc checks for overflow
and should prevent a similar occurrence.
Signed-off-by: Vlad Tsyrklevich <[email protected]>
Signed-off-by: Alex Williamson <[email protected]>
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Fix parameter name for __page_to_voff, to match its definition.
At present, we don't see any issue, as page_to_virt's caller
declares 'page'.
Fixes: 9f2875912dac ("arm64: mm: restrict virt_to_page() to the linear mapping")
Acked-by: Mark Rutland <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Neeraj Upadhyay <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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When booting on NUMA system with memory-less node (no
memory dimm on this memory controller), the print
for setup_node_data() is incorrect:
NUMA: Initmem setup node 2 [mem 0x00000000-0xffffffffffffffff]
It can be fixed by printing [mem 0x00000000-0x00000000] when
end_pfn is 0, but print <memory-less node> will be more useful.
Fixes: 1a2db300348b ("arm64, numa: Add NUMA support for arm64 platforms.")
Signed-off-by: Hanjun Guo <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Ganapatrao Kulkarni <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yisheng Xie <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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The pcpu_build_alloc_info() function group CPUs according to their
proximity, by call callback function @cpu_distance_fn from different
ARCHs.
For arm64 the callback of @cpu_distance_fn is
pcpu_cpu_distance(from, to)
-> node_distance(from, to)
The @from and @to for function node_distance() should be nid.
However, pcpu_cpu_distance() in arch/arm64/mm/numa.c just past the
cpu id for @from and @to, and didn't convert to numa node id.
For this incorrect cpu proximity get from ARCH, it may cause each CPU
in one group and make group_cnt out of bound:
setup_per_cpu_areas()
pcpu_embed_first_chunk()
pcpu_build_alloc_info()
in pcpu_build_alloc_info, since cpu_distance_fn will return
REMOTE_DISTANCE if we pass cpu ids (0,1,2...), so
cpu_distance_fn(cpu, tcpu) > LOCAL_DISTANCE will wrongly be ture.
This may results in triggering the BUG_ON(unit != nr_units) later:
[ 0.000000] kernel BUG at mm/percpu.c:1916!
[ 0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.9.0-rc1-00003-g14155ca-dirty #26
[ 0.000000] Hardware name: Hisilicon Hi1616 Evaluation Board (DT)
[ 0.000000] task: ffff000008d6e900 task.stack: ffff000008d60000
[ 0.000000] PC is at pcpu_embed_first_chunk+0x420/0x704
[ 0.000000] LR is at pcpu_embed_first_chunk+0x3bc/0x704
[ 0.000000] pc : [<ffff000008c754f4>] lr : [<ffff000008c75490>] pstate: 800000c5
[ 0.000000] sp : ffff000008d63eb0
[ 0.000000] x29: ffff000008d63eb0 [ 0.000000] x28: 0000000000000000
[ 0.000000] x27: 0000000000000040 [ 0.000000] x26: ffff8413fbfcef00
[ 0.000000] x25: 0000000000000042 [ 0.000000] x24: 0000000000000042
[ 0.000000] x23: 0000000000001000 [ 0.000000] x22: 0000000000000046
[ 0.000000] x21: 0000000000000001 [ 0.000000] x20: ffff000008cb3bc8
[ 0.000000] x19: ffff8413fbfcf570 [ 0.000000] x18: 0000000000000000
[ 0.000000] x17: ffff000008e49ae0 [ 0.000000] x16: 0000000000000003
[ 0.000000] x15: 000000000000001e [ 0.000000] x14: 0000000000000004
[ 0.000000] x13: 0000000000000000 [ 0.000000] x12: 000000000000006f
[ 0.000000] x11: 00000413fbffff00 [ 0.000000] x10: 0000000000000004
[ 0.000000] x9 : 0000000000000000 [ 0.000000] x8 : 0000000000000001
[ 0.000000] x7 : ffff8413fbfcf63c [ 0.000000] x6 : ffff000008d65d28
[ 0.000000] x5 : ffff000008d65e50 [ 0.000000] x4 : 0000000000000000
[ 0.000000] x3 : ffff000008cb3cc8 [ 0.000000] x2 : 0000000000000040
[ 0.000000] x1 : 0000000000000040 [ 0.000000] x0 : 0000000000000000
[...]
[ 0.000000] Call trace:
[ 0.000000] Exception stack(0xffff000008d63ce0 to 0xffff000008d63e10)
[ 0.000000] 3ce0: ffff8413fbfcf570 0001000000000000 ffff000008d63eb0 ffff000008c754f4
[ 0.000000] 3d00: ffff000008d63d50 ffff0000081af210 00000413fbfff010 0000000000001000
[ 0.000000] 3d20: ffff000008d63d50 ffff0000081af220 00000413fbfff010 0000000000001000
[ 0.000000] 3d40: 00000413fbfcef00 0000000000000004 ffff000008d63db0 ffff0000081af390
[ 0.000000] 3d60: 00000413fbfcef00 0000000000001000 0000000000000000 0000000000001000
[ 0.000000] 3d80: 0000000000000000 0000000000000040 0000000000000040 ffff000008cb3cc8
[ 0.000000] 3da0: 0000000000000000 ffff000008d65e50 ffff000008d65d28 ffff8413fbfcf63c
[ 0.000000] 3dc0: 0000000000000001 0000000000000000 0000000000000004 00000413fbffff00
[ 0.000000] 3de0: 000000000000006f 0000000000000000 0000000000000004 000000000000001e
[ 0.000000] 3e00: 0000000000000003 ffff000008e49ae0
[ 0.000000] [<ffff000008c754f4>] pcpu_embed_first_chunk+0x420/0x704
[ 0.000000] [<ffff000008c6658c>] setup_per_cpu_areas+0x38/0xc8
[ 0.000000] [<ffff000008c608d8>] start_kernel+0x10c/0x390
[ 0.000000] [<ffff000008c601d8>] __primary_switched+0x5c/0x64
[ 0.000000] Code: b8018660 17ffffd7 6b16037f 54000080 (d4210000)
[ 0.000000] ---[ end trace 0000000000000000 ]---
[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
Fix by getting cpu's node id with early_cpu_to_node() then pass it
to node_distance() as the original intention.
Fixes: 7af3a0a99252 ("arm64/numa: support HAVE_SETUP_PER_CPU_AREA")
Signed-off-by: Yisheng Xie <[email protected]>
Signed-off-by: Hanjun Guo <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Zhen Lei <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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code.
Just like the non-cross-call TLB flush handlers, the cross-call ones need
to avoid doing PC-relative branches outside of their code blocks.
Signed-off-by: David S. Miller <[email protected]>
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Noticed by James Clarke.
Signed-off-by: David S. Miller <[email protected]>
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This patch fixes one issue reported by Kent, which can
be triggered in bcachefs over sata disk. Actually it
is a generic issue in block flush vs. blk-tag.
Cc: Christoph Hellwig <[email protected]>
Reported-by: Kent Overstreet <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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Commit 784d5699eddc5 ("x86: move exports to actual definitions") removed the
EXPORT_SYMBOL(__fentry__) and EXPORT_SYMBOL(mcount) from x8664_ksyms_64.c,
and added EXPORT_SYMBOL(function_hook) in mcount_64.S instead. The problem
is that function_hook isn't a function at all, but a macro that is defined
as either mcount or __fentry__ depending on the support from gcc.
Originally, I thought this was a macro issue, like what __stringify()
is used for. But the problem is a bit deeper. The Makefile.build has
some magic that does post processing of files to create the CRC
bindings. It does some searches for EXPORT_SYMBOL() and because it
finds a macro name and not the actual functions, this causes
function_hook not to be converted into mcount or __fentry__ and they
are missed.
Instead of adding more magic to Makefile.build, just add
EXPORT_SYMBOL() for mcount and __fentry__ where the ifdef is used.
Since this is assembly and not C, it doesn't require being set after
the function is defined.
Signed-off-by: Steven Rostedt <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Cc: Gabriel C <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Al Viro <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
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When we get a spurious interrupt in fsl_espi_irq, we end up
processing four uninitalized bytes of data, as shown in this
warning message:
drivers/spi/spi-fsl-espi.c: In function 'fsl_espi_irq':
drivers/spi/spi-fsl-espi.c:462:4: warning: 'rx_data' may be used uninitialized in this function [-Wmaybe-uninitialized]
This adds another check so we skip the data in this case.
Fixes: 6319a68011b8 ("spi/fsl-espi: avoid infinite loops on fsl_espi_cpu_irq()")
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Cc: [email protected]
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commit 92ca8d20dee2 ("genirq/msi: Switch to new irq spreading")
introduced new parameter to msi_init_setup and but did not update
docbook comments. Fixes 'make htmldocs' warning.
Signed-off-by: Stephen Hemminger <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-linus
Chanwoo writes:
Update extcon for v4.9-rc3
This patch fixes the following issue:
- Use the extcon_set_state_sync() to notify the changed state
intead of extcon_set_state() in the Qualcomm USB extcon driver.
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The driver was changed after submission to use the new style APIs
like extcon_set_state(). Unfortunately, that only sets the state,
and doesn't notify any consumers that the cable state has
changed. Use extcon_set_state_sync() here instead so that we
notify cable consumers of the state change. This fixes USB
host-device role switching on the db8074 platform.
Fixes: 38085c987f52 ("extcon: Add support for qcom SPMI PMIC USB id detection hardware")
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Chanwoo Choi <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-linus
Peter writes:
Fix for kernel panic during the system reboot for some boards
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This fixes a regression in all these drivers since the cache
mode tracking was fixed for mixed mappings. It uses the new
arch API to add the VRAM range to the PAT mapping tracking
tables.
Fixes: 87744ab3832 (mm: fix cache mode tracking in vm_insert_mixed())
Reviewed-by: Christian König <[email protected]>.
Signed-off-by: Dave Airlie <[email protected]>
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Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
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When suspending without WoWLAN, cfg80211 will ask drivers to
disconnect. Even when the driver does this synchronously, and
immediately returns with a notification, cfg80211 schedules
the handling thereof to a workqueue, and may then call back
into the driver when the driver was already suspended/ing.
Fix this by processing all events caused by cfg80211_leave_all()
directly after that function returns. The driver still needs to
do the right thing here and wait for the firmware response, but
that is - at least - true for mwifiex where this occurred.
Reported-by: Amitkumar Karwar <[email protected]>
Tested-by: Amitkumar Karwar <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
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A recent change to the mm code in:
87744ab3832b mm: fix cache mode tracking in vm_insert_mixed()
started enforcing checking the memory type against the registered list for
amixed pfn insertion mappings. It happens that the drm drivers for a number
of gpus relied on this being broken. Currently the driver only inserted
VRAM mappings into the tracking table when they came from the kernel,
and userspace mappings never landed in the table. This led to a regression
where all the mapping end up as UC instead of WC now.
I've considered a number of solutions but since this needs to be fixed
in fixes and not next, and some of the solutions were going to introduce
overhead that hadn't been there before I didn't consider them viable at
this stage. These mainly concerned hooking into the TTM io reserve APIs,
but these API have a bunch of fast paths I didn't want to unwind to add
this to.
The solution I've decided on is to add a new API like the arch_phys_wc
APIs (these would have worked but wc_del didn't take a range), and
use them from the drivers to add a WC compatible mapping to the table
for all VRAM on those GPUs. This means we can then create userspace
mapping that won't get degraded to UC.
v1.1: use CONFIG_X86_PAT + add some comments in io.h
Cc: Toshi Kani <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Dan Williams <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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If the number of pages we are flushing is more than twice the number
of entries in the TSB, just scan the TSB table for matches rather
than probing each and every page in the range.
Based upon a patch and report by James Clarke.
Signed-off-by: David S. Miller <[email protected]>
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Additionally, if the offset will overflow the immediate for a ba,pt
instruction, fall back on a standard ba to get an extra 3 bits.
Signed-off-by: James Clarke <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Being a Linux kernel maintainer has been my proudest professional
accomplishment, spanning the last 19 years. But now we have a surfeit
of excellent hackers, and I can hand this over without regret.
I'll still be around as co-maintainer for another cycle, but Jessica
is now the one to convince if you want your patches applied. She
rocks, and is far more timely than me too!
Signed-off-by: Rusty Russell <[email protected]>
Acked-by: Jessica Yu <[email protected]>
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When we copy code over to patch another piece of code, we can only use
PC-relative branches that target code within that piece of code.
Such PC-relative branches cannot be made to external symbols because
the patch moves the location of the code and thus modifies the
relative address of external symbols.
Use an absolute jmpl to fix this problem.
Signed-off-by: David S. Miller <[email protected]>
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We need to make sure hpriv->irq is set properly if we don't use per-port
vectors, so switch from blindly assigning pdev->irq to using
pci_irq_vector, which handles all interrupt types correctly.
Signed-off-by: Christoph Hellwig <[email protected]>
Reported-by: Robert Richter <[email protected]>
Tested-by: Robert Richter <[email protected]>
Tested-by: David Daney <[email protected]>
Fixes: 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors")
Signed-off-by: Tejun Heo <[email protected]>
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When a timer is enqueued we try to forward the timer base clock. This
mechanism has two issues:
1) Forwarding a remote base unlocked
The forwarding function is called from get_target_base() with the current
timer base lock held. But if the new target base is a different base than
the current base (can happen with NOHZ, sigh!) then the forwarding is done
on an unlocked base. This can lead to corruption of base->clk.
Solution is simple: Invoke the forwarding after the target base is locked.
2) Possible corruption due to jiffies advancing
This is similar to the issue in get_net_timer_interrupt() which was fixed
in the previous patch. jiffies can advance between check and assignement
and therefore advancing base->clk beyond the next expiry value.
So we need to read jiffies into a local variable once and do the checks and
assignment with the local copy.
Fixes: a683f390b93f("timers: Forward the wheel clock whenever possible")
Reported-by: Ashton Holmes <[email protected]>
Reported-by: Michael Thayer <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Michal Necasek <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
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Ashton and Michael reported, that kernel versions 4.8 and later suffer from
USB timeouts which are caused by the timer wheel rework.
This is caused by a bug in the base clock forwarding mechanism, which leads
to timers expiring early. The scenario which leads to this is:
run_timers()
while (jiffies >= base->clk) {
collect_expired_timers();
base->clk++;
expire_timers();
}
So base->clk = jiffies + 1. Now the cpu goes idle:
idle()
get_next_timer_interrupt()
nextevt = __next_time_interrupt();
if (time_after(nextevt, base->clk))
base->clk = jiffies;
jiffies has not advanced since run_timers(), so this assignment effectively
decrements base->clk by one.
base->clk is the index into the timer wheel arrays. So let's assume the
following state after the base->clk increment in run_timers():
jiffies = 0
base->clk = 1
A timer gets enqueued with an expiry delta of 63 ticks (which is the case
with the USB timeout and HZ=250) so the resulting bucket index is:
base->clk + delta = 1 + 63 = 64
The timer goes into the first wheel level. The array size is 64 so it ends
up in bucket 0, which is correct as it takes 63 ticks to advance base->clk
to index into bucket 0 again.
If the cpu goes idle before jiffies advance, then the bug in the forwarding
mechanism sets base->clk back to 0, so the next invocation of run_timers()
at the next tick will index into bucket 0 and therefore expire the timer 62
ticks too early.
Instead of blindly setting base->clk to jiffies we must make the forwarding
conditional on jiffies > base->clk, but we cannot use jiffies for this as
we might run into the following issue:
if (time_after(jiffies, base->clk) {
if (time_after(nextevt, base->clk))
base->clk = jiffies;
jiffies can increment between the check and the assigment far enough to
advance beyond nextevt. So we need to use a stable value for checking.
get_next_timer_interrupt() has the basej argument which is the jiffies
value snapshot taken in the calling code. So we can just that.
Thanks to Ashton for bisecting and providing trace data!
Fixes: a683f390b93f ("timers: Forward the wheel clock whenever possible")
Reported-by: Ashton Holmes <[email protected]>
Reported-by: Michael Thayer <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Michal Necasek <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
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Linus stumbled over the unlocked modification of the timer expiry value in
mod_timer() which is an optimization for timers which stay in the same
bucket - due to the bucket granularity - despite their expiry time getting
updated.
The optimization itself still makes sense even if we take the lock, because
in case that the bucket stays the same, we avoid the pointless
queue/enqueue dance.
Make the check and the modification of timer->expires protected by the base
lock and shuffle the remaining code around so we can keep the lock held
when we actually have to requeue the timer to a different bucket.
Fixes: f00c0afdfa62 ("timers: Implement optimization for same expiry time in mod_timer()")
Reported-by: Linus Torvalds <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610241711220.4983@nanos
Cc: [email protected]
Cc: Andrew Morton <[email protected]>
Cc: Peter Zijlstra <[email protected]>
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Linus noticed that lock_timer_base() lacks a READ_ONCE() for accessing the
timer flags. As a consequence the compiler is allowed to reload the flags
between the initial check for TIMER_MIGRATION and the following timer base
computation and the spin lock of the base.
While this has not been observed (yet), we need to make sure that it never
happens.
Fixes: 0eeda71bc30d ("timer: Replace timer base by a cpu index")
Reported-by: Linus Torvalds <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610241711220.4983@nanos
Cc: [email protected]
Cc: Andrew Morton <[email protected]>
Cc: Peter Zijlstra <[email protected]>
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The recent rewrite of the sequencer time accounting using timespec64
in the commit [3915bf294652: ALSA: seq_timer: use monotonic times
internally] introduced a bad regression. Namely, the time reported
back doesn't increase but goes back and forth.
The culprit was obvious: the delta is stored to the result (cur_time =
delta), instead of adding the delta (cur_time += delta)!
Let's fix it.
Fixes: 3915bf294652 ('ALSA: seq_timer: use monotonic times internally')
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=177571
Reported-by: Yves Guillemot <[email protected]>
Cc: <[email protected]> # v4.8+
Signed-off-by: Takashi Iwai <[email protected]>
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Some SoC might load the GPIO driver after the I2C driver and
using the I2C bus recovery mechanism via GPIOs. In this case
it is crucial to defer probing if the GPIO request functions
do so, otherwise the I2C driver gets loaded without recovery
mechanisms enabled.
Signed-off-by: Stefan Agner <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Acked-by: Li Yang <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Cc: [email protected]
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I2C DesignWare may abort transfer with arbitration lost if I2C slave pulls
SDA down quickly after falling edge of SCL. Reason for this is unknown but
after trial and error it was found this can be avoided by enabling non-zero
SDA RX hold time for the receiver.
By the specification SDA RX hold time extends incoming SDA low to high
transition by n * ic_clk cycles but only when SCL is high. However it
seems to help avoid above faulty arbitration lost error.
Bits 23:16 in IC_SDA_HOLD register define the SDA RX hold time for the
receiver. Be conservative and enable 1 ic_clk cycle long hold time in
case boot firmware hasn't set it up.
Reported-by: Jukka Laitinen <[email protected]>
Signed-off-by: Jarkko Nikula <[email protected]>
Tested-by: Jukka Laitinen <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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Starting with the 8-Series/C220 PCH (Lynx Point), the SMBus
controller includes a SPD EEPROM protection mechanism. Once the SPD
Write Disable bit is set, only reads are allowed to slave addresses
0x50-0x57.
However the legacy implementation of I2C Block Read since the ICH5
looks like a write, and is therefore blocked by the SPD protection
mechanism. This causes the eeprom and at24 drivers to fail.
So assume that I2C Block Read is implemented as an actual read on
these chipsets. I tested it on my Q87 chipset and it seems to work
just fine.
Signed-off-by: Jean Delvare <[email protected]>
Tested-by: Jarkko Nikula <[email protected]>
[wsa: rebased to v4.9-rc2]
Signed-off-by: Wolfram Sang <[email protected]>
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SMBus block command uses the first byte of buffer for the data length.
The dma_buffer should be increased by 1 to avoid the overrun issue.
Reported-by: Phil Endecott <[email protected]>
Signed-off-by: Hoan Tran <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Cc: [email protected]
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Acked-by: Baruch Siach <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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The i2c controller used by Freescales iMX processors is the same
hardware module used on Freescales ColdFire family of processors.
We can use the existing i2c-imx driver on ColdFire family members.
Modify the configuration to allow it to be selected when compiling
for ColdFire targets.
Signed-off-by: Greg Ungerer <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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Instantiated I2C device nodes are marked with OF_POPULATE. This was
introduced in 4f001fd30145a6. On unloading, loaded device nodes will of
course be unmarked. The problem are nodes that fail during
initialisation: If a node fails, it won't be unloaded and hence not be
unmarked.
If a I2C driver module is unloaded and reloaded, it will skip nodes that
failed before.
Skip device nodes that are already populated and mark them only in case
of success.
Fixes: 4f001fd30145a6 ("i2c: Mark instantiated device nodes with OF_POPULATE")
Signed-off-by: Ralf Ramsauer <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Acked-by: Pantelis Antoniou <[email protected]>
[wsa: use 14-digit commit sha]
Signed-off-by: Wolfram Sang <[email protected]>
Cc: [email protected]
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gcc -Wmaybe-uninitialized detects that quirk_intel_brickland_xeon_ras_cap
uses uninitialized data when CONFIG_PCI is not set:
arch/x86/kernel/quirks.c: In function ‘quirk_intel_brickland_xeon_ras_cap’:
arch/x86/kernel/quirks.c:641:13: error: ‘capid0’ is used uninitialized in this function [-Werror=uninitialized]
However, the function is also not called in this configuration, so we
can avoid the warning by moving the existing #ifdef to cover it as well.
Signed-off-by: Arnd Bergmann <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
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Older GCC (observed with 4.1.x) doesn't support -Wno-override-init and
also doesn't ignore unknown -Wno-* options.
Signed-off-by: Jan Beulich <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Valdis Kletnieks <[email protected]>
Cc: [email protected]
Fixes: 5e44258d16 "x86/build: Reduce the W=1 warnings noise when compiling x86 syscall tables"
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
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Vince Waver reported the following bug:
WARNING: CPU: 0 PID: 21338 at arch/x86/mm/fault.c:435 vmalloc_fault+0x58/0x1f0
CPU: 0 PID: 21338 Comm: perf_fuzzer Not tainted 4.8.0+ #37
Hardware name: Hewlett-Packard HP Compaq Pro 6305 SFF/1850, BIOS K06 v02.57 08/16/2013
Call Trace:
<NMI> ? dump_stack+0x46/0x59
? __warn+0xd5/0xee
? vmalloc_fault+0x58/0x1f0
? __do_page_fault+0x6d/0x48e
? perf_log_throttle+0xa4/0xf4
? trace_page_fault+0x22/0x30
? __unwind_start+0x28/0x42
? perf_callchain_kernel+0x75/0xac
? get_perf_callchain+0x13a/0x1f0
? perf_callchain+0x6a/0x6c
? perf_prepare_sample+0x71/0x2eb
? perf_event_output_forward+0x1a/0x54
? __default_send_IPI_shortcut+0x10/0x2d
? __perf_event_overflow+0xfb/0x167
? x86_pmu_handle_irq+0x113/0x150
? native_read_msr+0x6/0x34
? perf_event_nmi_handler+0x22/0x39
? perf_ibs_nmi_handler+0x4a/0x51
? perf_event_nmi_handler+0x22/0x39
? nmi_handle+0x4d/0xf0
? perf_ibs_handle_irq+0x3d1/0x3d1
? default_do_nmi+0x3c/0xd5
? do_nmi+0x92/0x102
? end_repeat_nmi+0x1a/0x1e
? entry_SYSCALL_64_after_swapgs+0x12/0x4a
? entry_SYSCALL_64_after_swapgs+0x12/0x4a
? entry_SYSCALL_64_after_swapgs+0x12/0x4a
<EOE> ^A4---[ end trace 632723104d47d31a ]---
BUG: stack guard page was hit at ffffc90008500000 (stack is ffffc900084fc000..ffffc900084fffff)
kernel stack overflow (page fault): 0000 [#1] SMP
...
The NMI hit in the entry code right after setting up the stack pointer
from 'cpu_current_top_of_stack', so the kernel stack was empty. The
'guess' version of __unwind_start() attempted to dereference the "top of
stack" pointer, which is not actually *on* the stack.
Add a check in the guess unwinder to deal with an empty stack. (The
frame pointer unwinder already has such a check.)
Reported-by: Vince Weaver <[email protected]>
Signed-off-by: Josh Poimboeuf <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Fixes: 7c7900f89770 ("x86/unwind: Add new unwind interface and implementations")
Link: http://lkml.kernel.org/r/20161024133127.e5evgeebdbohnmpb@treble
Signed-off-by: Ingo Molnar <[email protected]>
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We found a bug that i2c transfer sometimes failed on 3066a board with
stabel-4.8, the con register would be updated by uninitialized tuning
value, it made the i2c transfer failed.
So give the tuning value to be zero during rk3x_i2c_v0_calc_timings.
Signed-off-by: David Wu <[email protected]>
Tested-by: Andy Yan <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Cc: [email protected]
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This driver should be buildable with ARCH_HISI,
because some of other HiSilicon SoCs also use it.
Signed-off-by: Ruqiang Ju <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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After commit b09b5224fe86 ("usb: chipidea: implement platform shutdown
callback") and commit 43a404577a93 ("usb: chipidea: host: set host to
be null after hcd is freed") a NULL pointer dereference is caused
on i.MX23 during shutdown. So ensure that role is set to CI_ROLE_END and
we finish interrupt handling before the hcd is deallocated. This avoids
the NULL pointer dereference.
Suggested-by: Alan Stern <[email protected]>
Signed-off-by: Stefan Wahren <[email protected]>
Fixes: b09b5224fe86 ("usb: chipidea: implement platform shutdown callback")
Signed-off-by: Peter Chen <[email protected]>
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ASRock B150M Pro4/D3 mobo with ALC892 codec doesn't seem to provide
proper pins for the surround outputs, hence we need to specify the
pincfgs manually with a couple of other corrections.
Reported-and-tested-by: Benjamin Valentin <[email protected]>
Cc: <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
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