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Dmitry reported a warning [1] showing that we were calling
net_disable_timestamp() -> static_key_slow_dec() from a non
process context.
Grabbing a mutex while holding a spinlock or rcu_read_lock()
is not allowed.
As Cong suggested, we now use a work queue.
It is possible netstamp_clear() exits while netstamp_needed_deferred
is not zero, but it is probably not worth trying to do better than that.
netstamp_needed_deferred atomic tracks the exact number of deferred
decrements.
[1]
[ INFO: suspicious RCU usage. ]
4.10.0-rc5+ #192 Not tainted
-------------------------------
./include/linux/rcupdate.h:561 Illegal context switch in RCU read-side
critical section!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 0
2 locks held by syz-executor14/23111:
#0: (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff83a35c35>] lock_sock
include/net/sock.h:1454 [inline]
#0: (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff83a35c35>]
rawv6_sendmsg+0x1e65/0x3ec0 net/ipv6/raw.c:919
#1: (rcu_read_lock){......}, at: [<ffffffff83ae2678>] nf_hook
include/linux/netfilter.h:201 [inline]
#1: (rcu_read_lock){......}, at: [<ffffffff83ae2678>]
__ip6_local_out+0x258/0x840 net/ipv6/output_core.c:160
stack backtrace:
CPU: 2 PID: 23111 Comm: syz-executor14 Not tainted 4.10.0-rc5+ #192
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:15 [inline]
dump_stack+0x2ee/0x3ef lib/dump_stack.c:51
lockdep_rcu_suspicious+0x139/0x180 kernel/locking/lockdep.c:4452
rcu_preempt_sleep_check include/linux/rcupdate.h:560 [inline]
___might_sleep+0x560/0x650 kernel/sched/core.c:7748
__might_sleep+0x95/0x1a0 kernel/sched/core.c:7739
mutex_lock_nested+0x24f/0x1730 kernel/locking/mutex.c:752
atomic_dec_and_mutex_lock+0x119/0x160 kernel/locking/mutex.c:1060
__static_key_slow_dec+0x7a/0x1e0 kernel/jump_label.c:149
static_key_slow_dec+0x51/0x90 kernel/jump_label.c:174
net_disable_timestamp+0x3b/0x50 net/core/dev.c:1728
sock_disable_timestamp+0x98/0xc0 net/core/sock.c:403
__sk_destruct+0x27d/0x6b0 net/core/sock.c:1441
sk_destruct+0x47/0x80 net/core/sock.c:1460
__sk_free+0x57/0x230 net/core/sock.c:1468
sock_wfree+0xae/0x120 net/core/sock.c:1645
skb_release_head_state+0xfc/0x200 net/core/skbuff.c:655
skb_release_all+0x15/0x60 net/core/skbuff.c:668
__kfree_skb+0x15/0x20 net/core/skbuff.c:684
kfree_skb+0x16e/0x4c0 net/core/skbuff.c:705
inet_frag_destroy+0x121/0x290 net/ipv4/inet_fragment.c:304
inet_frag_put include/net/inet_frag.h:133 [inline]
nf_ct_frag6_gather+0x1106/0x3840
net/ipv6/netfilter/nf_conntrack_reasm.c:617
ipv6_defrag+0x1be/0x2b0 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:68
nf_hook_entry_hookfn include/linux/netfilter.h:102 [inline]
nf_hook_slow+0xc3/0x290 net/netfilter/core.c:310
nf_hook include/linux/netfilter.h:212 [inline]
__ip6_local_out+0x489/0x840 net/ipv6/output_core.c:160
ip6_local_out+0x2d/0x170 net/ipv6/output_core.c:170
ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1722
ip6_push_pending_frames+0xb3/0xe0 net/ipv6/ip6_output.c:1742
rawv6_push_pending_frames net/ipv6/raw.c:613 [inline]
rawv6_sendmsg+0x2d1a/0x3ec0 net/ipv6/raw.c:927
inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:744
sock_sendmsg_nosec net/socket.c:635 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:645
sock_write_iter+0x326/0x600 net/socket.c:848
do_iter_readv_writev+0x2e3/0x5b0 fs/read_write.c:695
do_readv_writev+0x42c/0x9b0 fs/read_write.c:872
vfs_writev+0x87/0xc0 fs/read_write.c:911
do_writev+0x110/0x2c0 fs/read_write.c:944
SYSC_writev fs/read_write.c:1017 [inline]
SyS_writev+0x27/0x30 fs/read_write.c:1014
entry_SYSCALL_64_fastpath+0x1f/0xc2
RIP: 0033:0x445559
RSP: 002b:00007f6f46fceb58 EFLAGS: 00000292 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000445559
RDX: 0000000000000001 RSI: 0000000020f1eff0 RDI: 0000000000000005
RBP: 00000000006e19c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000700000
R13: 0000000020f59000 R14: 0000000000000015 R15: 0000000000020400
BUG: sleeping function called from invalid context at
kernel/locking/mutex.c:752
in_atomic(): 1, irqs_disabled(): 0, pid: 23111, name: syz-executor14
INFO: lockdep is turned off.
CPU: 2 PID: 23111 Comm: syz-executor14 Not tainted 4.10.0-rc5+ #192
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:15 [inline]
dump_stack+0x2ee/0x3ef lib/dump_stack.c:51
___might_sleep+0x47e/0x650 kernel/sched/core.c:7780
__might_sleep+0x95/0x1a0 kernel/sched/core.c:7739
mutex_lock_nested+0x24f/0x1730 kernel/locking/mutex.c:752
atomic_dec_and_mutex_lock+0x119/0x160 kernel/locking/mutex.c:1060
__static_key_slow_dec+0x7a/0x1e0 kernel/jump_label.c:149
static_key_slow_dec+0x51/0x90 kernel/jump_label.c:174
net_disable_timestamp+0x3b/0x50 net/core/dev.c:1728
sock_disable_timestamp+0x98/0xc0 net/core/sock.c:403
__sk_destruct+0x27d/0x6b0 net/core/sock.c:1441
sk_destruct+0x47/0x80 net/core/sock.c:1460
__sk_free+0x57/0x230 net/core/sock.c:1468
sock_wfree+0xae/0x120 net/core/sock.c:1645
skb_release_head_state+0xfc/0x200 net/core/skbuff.c:655
skb_release_all+0x15/0x60 net/core/skbuff.c:668
__kfree_skb+0x15/0x20 net/core/skbuff.c:684
kfree_skb+0x16e/0x4c0 net/core/skbuff.c:705
inet_frag_destroy+0x121/0x290 net/ipv4/inet_fragment.c:304
inet_frag_put include/net/inet_frag.h:133 [inline]
nf_ct_frag6_gather+0x1106/0x3840
net/ipv6/netfilter/nf_conntrack_reasm.c:617
ipv6_defrag+0x1be/0x2b0 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:68
nf_hook_entry_hookfn include/linux/netfilter.h:102 [inline]
nf_hook_slow+0xc3/0x290 net/netfilter/core.c:310
nf_hook include/linux/netfilter.h:212 [inline]
__ip6_local_out+0x489/0x840 net/ipv6/output_core.c:160
ip6_local_out+0x2d/0x170 net/ipv6/output_core.c:170
ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1722
ip6_push_pending_frames+0xb3/0xe0 net/ipv6/ip6_output.c:1742
rawv6_push_pending_frames net/ipv6/raw.c:613 [inline]
rawv6_sendmsg+0x2d1a/0x3ec0 net/ipv6/raw.c:927
inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:744
sock_sendmsg_nosec net/socket.c:635 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:645
sock_write_iter+0x326/0x600 net/socket.c:848
do_iter_readv_writev+0x2e3/0x5b0 fs/read_write.c:695
do_readv_writev+0x42c/0x9b0 fs/read_write.c:872
vfs_writev+0x87/0xc0 fs/read_write.c:911
do_writev+0x110/0x2c0 fs/read_write.c:944
SYSC_writev fs/read_write.c:1017 [inline]
SyS_writev+0x27/0x30 fs/read_write.c:1014
entry_SYSCALL_64_fastpath+0x1f/0xc2
RIP: 0033:0x445559
Fixes: b90e5794c5bd ("net: dont call jump_label_dec from irq context")
Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We should check that we're within bounds first before checking that
"chip->active_banks[i] != TPM2_ALG_ERROR" so I've re-ordered the two
checks.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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In cap_t the size of the type bool is assumed to be one byte. This
commit sorts out the issue by changing the type to u8.
Fixes: c659af78eb7b ("tpm: Check size of response before accessing data")
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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Unlike the device driver support for TPM 1.2, the TPM 2.0 does
not support the securityfs pseudo files for displaying the
firmware event log.
This patch enables support for providing the TPM 2.0 event log in
binary form. TPM 2.0 event log supports a crypto agile format that
records multiple digests, which is different from TPM 1.2. This
patch enables the tpm_bios_log_setup for TPM 2.0 and adds the
event log parser which understand the TPM 2.0 crypto agile format.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Kenneth Goldman <kgold@linux.vnet.ibm.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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Physical TPMs use Open Firmware Device Tree bindings that are similar
to the IBM Power virtual TPM to support event log. However, these
properties store the values in different endianness for Physical
and Virtual TPM.
This patch fixes the endianness issue by doing appropriate conversion
based on Physical or Virtual TPM.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Kenneth Goldman <kgold@linux.vnet.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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The current TPM 2.0 device driver extends only the SHA1 PCR bank
but the TCG Specification[1] recommends extending all active PCR
banks, to prevent malicious users from setting unused PCR banks with
fake measurements and quoting them.
The existing in-kernel interface(tpm_pcr_extend()) expects only a
SHA1 digest. To extend all active PCR banks with differing
digest sizes, the SHA1 digest is padded with trailing 0's as needed.
This patch reuses the defined digest sizes from the crypto subsystem,
adding a dependency on CRYPTO_HASH_INFO module.
[1] TPM 2.0 Specification referred here is "TCG PC Client Specific
Platform Firmware Profile for TPM 2.0"
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Kenneth Goldman <kgold@linux.vnet.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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This patch implements the TPM 2.0 capability TPM_CAP_PCRS to
retrieve the active PCR banks from the TPM. This is needed
to enable extending all active banks as recommended by TPM 2.0
TCG Specification.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Kenneth Goldman <kgold@linux.vnet.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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The error code handling is broken as any error code that has the same
bits set as TPM_RC_HASH passes. Implemented tpm2_rc_value() helper to
parse the error value from FMT0 and FMT1 error codes so that these types
of mistakes are prevented in the future.
Fixes: 5ca4c20cfd37 ("keys, trusted: select hash algorithm for TPM2 chips")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
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probe_itpm() function is supposed to send command without an itpm flag set
and if this fails to repeat it, this time with the itpm flag set.
However, commit 41a5e1cf1fe15 ("tpm/tpm_tis: Split tpm_tis driver into a
core and TCG TIS compliant phy") moved the itpm flag from an "itpm"
variable to a TPM_TIS_ITPM_POSSIBLE chip flag, so setting the
(now function-local) itpm variable no longer had any effect.
Finally, this function-local itpm variable was removed by
commit 56af322156dbe9 ("tpm/tpm_tis: remove unused itpm variable")
Tested only on non-iTPM TIS TPM.
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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For a long time the cdev read/write interface had this strange
idea that userspace had to read the result within 60 seconds otherwise
it is discarded. Perhaps this made sense under some older locking regime,
but in the modern kernel it is not required and is just dangerous.
Since something may be relying on this, double the timeout and print a
warning. We can remove the code in a few years, but this should be
enough to prevent new users.
Suggested-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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These are non-generic functions and do not belong to tpm.h.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fix from Ulf Hansson:
"MMC host: sdhci: Avoid hang when receiving spurious CARD_INT
interrupts"
* tag 'mmc-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci: Ignore unexpected CARD_INT interrupts
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We queue an on-stack work item to 'nfit_wq' and wait for it to complete
as part of a 'flush_probe' request. However, if the user cancels the
wait we need to make sure the item is flushed from the queue otherwise
we are leaving an out-of-scope stack address on the work list.
BUG: unable to handle kernel paging request at ffffbcb3c72f7cd0
IP: [<ffffffffa9413a7b>] __list_add+0x1b/0xb0
[..]
RIP: 0010:[<ffffffffa9413a7b>] [<ffffffffa9413a7b>] __list_add+0x1b/0xb0
RSP: 0018:ffffbcb3c7ba7c00 EFLAGS: 00010046
[..]
Call Trace:
[<ffffffffa90bb11a>] insert_work+0x3a/0xc0
[<ffffffffa927fdda>] ? seq_open+0x5a/0xa0
[<ffffffffa90bb30a>] __queue_work+0x16a/0x460
[<ffffffffa90bbb08>] queue_work_on+0x38/0x40
[<ffffffffc0cf2685>] acpi_nfit_flush_probe+0x95/0xc0 [nfit]
[<ffffffffc0cf25d0>] ? nfit_visible+0x40/0x40 [nfit]
[<ffffffffa9571495>] wait_probe_show+0x25/0x60
[<ffffffffa9546b30>] dev_attr_show+0x20/0x50
Fixes: 7ae0fa439faf ("nfit, libnvdimm: async region scrub workqueue")
Cc: <stable@vger.kernel.org>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Reference count maps in callchains, fixing a SEGFAULT when referencing a
map after it is freed (Krister Johansen)
- Fix segfault on 'perf diff -o N' option (Namhyung Kim)
- Fix 'perf diff -o/--order' option behavior (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Another fixes pull for v4.10, it's a bit big due to the backport of
the VMA fixes for i915 that should fix the oops on shutdown problems
that you've worked around.
There are also two drm core connector registration fixes, a bunch of
nouveau regression fixes and two AMD fixes"
* tag 'drm-fixes-for-v4.10-rc7' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: Fix vram_size/visible values in DRM_RADEON_GEM_INFO ioctl
drm/amdgpu/si: fix crash on headless asics
drm/i915: Track pinned vma in intel_plane_state
drm/atomic: Unconditionally call prepare_fb.
drm/atomic: Fix double free in drm_atomic_state_default_clear
drm/nouveau/kms/nv50: request vblank events for commits that send completion events
drm/nouveau/nv1a,nv1f/disp: fix memory clock rate retrieval
drm/nouveau/disp/gt215: Fix HDA ELD handling (thus, HDMI audio) on gt215
drm/nouveau/nouveau/led: prevent compiling the led-code if nouveau=y and leds=m
drm/nouveau/disp/mcp7x: disable dptmds workaround
drm/nouveau: prevent userspace from deleting client object
drm/nouveau/fence/g84-: protect against concurrent access to semaphore buffers
drm: Don't race connector registration
drm: prevent double-(un)registration for connectors
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"The main change is we're reverting the initial stack protector support
we merged this cycle. It turns out to not work on toolchains built
with libc support, and fixing it will be need to wait for another
release.
And the rest are all fairly minor:
- Some pasemi machines were not booting due to a missing error check
in prom_find_boot_cpu()
- In EEH we were checking a pointer rather than the bool it pointed
to
- The clang build was broken by a BUILD_BUG_ON() we added.
- The radix (Power9 only) version of map_kernel_page() was broken if
our memory size was a multiple of 2MB, which it generally isn't
Thanks to: Darren Stevens, Gavin Shan, Reza Arbab"
* tag 'powerpc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm: Use the correct pointer when setting a 2MB pte
powerpc: Fix build failure with clang due to BUILD_BUG_ON()
powerpc: Revert the initial stack protector support
powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()
powerpc: Add missing error check to prom_find_boot_cpu()
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"Simple fix of s/static struct __init/static __init struct/"
* tag 'trace-v4.10-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/kprobes: Fix __init annotation
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Merge kcrctab entry fixes from Ard Biesheuvel:
"This is a followup to [0] 'modversions: redefine kcrctab entries as
relative CRC pointers', but since relative CRC pointers do not work in
modules, and are actually only needed by powerpc with
CONFIG_RELOCATABLE=y, I have made it a Kconfig selectable feature
instead.
First it introduces the MODULE_REL_CRCS Kconfig symbol, and adds the
kbuild handling of it, i.e., modpost, genksyms and kallsyms.
Then it switches all architectures to 32-bit CRC entries in kcrctab,
where all architectures except powerpc with CONFIG_RELOCATABLE=y use
absolute ELF symbol references as before"
[0] http://marc.info/?l=linux-arch&m=148493613415294&w=2
* emailed patches from Ard Biesheuvel:
module: unify absolute krctab definitions for 32-bit and 64-bit
modversions: treat symbol CRCs as 32 bit quantities
kbuild: modversions: add infrastructure for emitting relative CRCs
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The function order_base_2() is defined (according to the comment block)
as returning zero on input zero, but subsequently passes the input into
roundup_pow_of_two(), which is explicitly undefined for input zero.
This has gone unnoticed until now, but optimization passes in GCC 7 may
produce constant folded function instances where a constant value of
zero is passed into order_base_2(), resulting in link errors against the
deliberately undefined '____ilog2_NaN'.
So update order_base_2() to adhere to its own documented interface.
[ See
http://marc.info/?l=linux-kernel&m=147672952517795&w=2
and follow-up discussion for more background. The gcc "optimization
pass" is really just broken, but now the GCC trunk problem seems to
have escaped out of just specially built daily images, so we need to
work around it in mainline. - Linus ]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Saving unsupported state prevents migration when the new host does not
support a XSAVE feature of the original host, even if the feature is not
exposed to the guest.
We've masked host features with guest-visible features before, with
4344ee981e21 ("KVM: x86: only copy XSAVE state for the supported
features") and dropped it when implementing XSAVES. Do it again.
Fixes: df1daba7d1cb ("KVM: x86: support XSAVES usage in the host")
Cc: stable@vger.kernel.org
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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v4l2-async had several functions doing some operations and then
not undoing the operations in a failure situation. For example,
v4l2_async_test_notify() moved a subdev into notifier's done list
even if registering the subdev (v4l2_device_register_subdev) failed.
If the subdev was allocated and v4l2_async_register_subdev() called
from the driver's probe() function, as usually, the probe()
function freed the allocated subdev and returned a failure.
Nevertheless, the subdev was still left into the notifier's done
list, causing an access to already freed memory when the notifier
was later unregistered.
A hand-edited call trace leaving freed subdevs into the notifier:
v4l2_async_register_notifier(notifier, asd)
cameradrv_probe
sd = devm_kzalloc()
v4l2_async_register_subdev(sd)
v4l2_async_test_notify(notifier, sd, asd)
list_move(sd, ¬ifier->done)
v4l2_device_register_subdev(notifier->v4l2_dev, sd)
cameradrv_registered(sd) -> fails
->v4l2_async_register_subdev returns failure
->cameradrv_probe returns failure
->devres frees the allocated sd
->sd was freed but it still remains in the notifier's list.
This patch fixes this and several other cases where a failing
function could leave nodes into a linked list while the caller
might free the node due to a failure.
Signed-off-by: Tuukka Toivonen <tuukka.toivonen@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
We should be returning negative error codes here or it leads to a crash.
This also silences a static checker warning.
drivers/media/pci/mantis/mantis_cards.c:250 mantis_pci_probe()
warn: 'mantis->dmxdev.dvbdev->fops' double freed
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
If we end up doing a request-to-request merge when we have completed
a bio-to-request merge, we free the request from deep down in that
path. For blk-mq-sched, the merge path has to hold the appropriate
lock, but we don't need it for freeing the request. And in fact
holding the lock is problematic, since we are now calling the
mq sched put_rq_private() hook with the lock held. Other call paths
do not hold this lock.
Fix this inconsistency by ensuring that the caller frees a merged
request. Then we can do it outside of the lock, making it both more
efficient and fixing the blk-mq-sched problem of invoking parts of
the scheduler with an unknown lock state.
Reported-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
|
|
When we attempt to merge request-to-request, we return a 0/1 if we
ended up merging or not. Change that to return the pointer to the
request that we freed. We will use this to move the freeing of
that request out of the merge logic, so that callers can drop
locks before freeing the request.
There should be no functional changes in this patch.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
|
|
The previous patch introduced a separate inline asm version of the
krcrctab declaration template for use with 64-bit architectures, which
cannot refer to ELF symbols using 32-bit quantities.
This declaration should be equivalent to the C one for 32-bit
architectures, but just in case - unify them in a separate patch, which
can simply be dropped if it turns out to break anything.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The modversion symbol CRCs are emitted as ELF symbols, which allows us
to easily populate the kcrctab sections by relying on the linker to
associate each kcrctab slot with the correct value.
This has a couple of downsides:
- Given that the CRCs are treated as memory addresses, we waste 4 bytes
for each CRC on 64 bit architectures,
- On architectures that support runtime relocation, a R_<arch>_RELATIVE
relocation entry is emitted for each CRC value, which identifies it
as a quantity that requires fixing up based on the actual runtime
load offset of the kernel. This results in corrupted CRCs unless we
explicitly undo the fixup (and this is currently being handled in the
core module code)
- Such runtime relocation entries take up 24 bytes of __init space
each, resulting in a x8 overhead in [uncompressed] kernel size for
CRCs.
Switching to explicit 32 bit values on 64 bit architectures fixes most
of these issues, given that 32 bit values are not treated as quantities
that require fixing up based on the actual runtime load offset. Note
that on some ELF64 architectures [such as PPC64], these 32-bit values
are still emitted as [absolute] runtime relocatable quantities, even if
the value resolves to a build time constant. Since relative relocations
are always resolved at build time, this patch enables MODULE_REL_CRCS on
powerpc when CONFIG_RELOCATABLE=y, which turns the absolute CRC
references into relative references into .rodata where the actual CRC
value is stored.
So redefine all CRC fields and variables as u32, and redefine the
__CRC_SYMBOL() macro for 64 bit builds to emit the CRC reference using
inline assembler (which is necessary since 64-bit C code cannot use
32-bit types to hold memory addresses, even if they are ultimately
resolved using values that do not exceed 0xffffffff). To avoid
potential problems with legacy 32-bit architectures using legacy
toolchains, the equivalent C definition of the kcrctab entry is retained
for 32-bit architectures.
Note that this mostly reverts commit d4703aefdbc8 ("module: handle ppc64
relocating kcrctabs when CONFIG_RELOCATABLE=y")
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
This add the kbuild infrastructure that will allow architectures to emit
vmlinux symbol CRCs as 32-bit offsets to another location in the kernel
where the actual value is stored. This works around problems with CRCs
being mistaken for relocatable symbols on kernels that self relocate at
runtime (i.e., powerpc with CONFIG_RELOCATABLE=y)
For the kbuild side of things, this comes down to the following:
- introducing a Kconfig symbol MODULE_REL_CRCS
- adding a -R switch to genksyms to instruct it to emit the CRC symbols
as references into the .rodata section
- making modpost distinguish such references from absolute CRC symbols
by the section index (SHN_ABS)
- making kallsyms disregard non-absolute symbols with a __crc_ prefix
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
A negative return value indicates an error; in fact the function at
present won't ever return zero.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
|
|
There isn't an ioctl to enum the supported field orders, so a user-space
application can call VIDIOC_TRY_FMT using different field orders to know
if one is supported. For example, GStreamer does this so during playback
dozens of the following messages appear in the kernel log buffer:
[ 442.143393] Not supported field order(4)
Instead of printing this as an error, just keep it as debug information.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
As reported by Marc Duponcheel <marc@offline.be>, firmware load on
dvb-usb is using the stack, with is not allowed anymore on default
Kernel configurations:
[ 1025.958836] dvb-usb: found a 'WideView WT-220U PenType Receiver (based on ZL353)' in cold state, will try to load a firmware
[ 1025.958853] dvb-usb: downloading firmware from file 'dvb-usb-wt220u-zl0353-01.fw'
[ 1025.958855] dvb-usb: could not stop the USB controller CPU.
[ 1025.958856] dvb-usb: error while transferring firmware (transferred size: -11, block size: 3)
[ 1025.958856] dvb-usb: firmware download failed at 8 with -22
[ 1025.958867] usbcore: registered new interface driver dvb_usb_dtt200u
[ 2.789902] dvb-usb: downloading firmware from file 'dvb-usb-wt220u-zl0353-01.fw'
[ 2.789905] ------------[ cut here ]------------
[ 2.789911] WARNING: CPU: 3 PID: 2196 at drivers/usb/core/hcd.c:1584 usb_hcd_map_urb_for_dma+0x430/0x560 [usbcore]
[ 2.789912] transfer buffer not dma capable
[ 2.789912] Modules linked in: btusb dvb_usb_dtt200u(+) dvb_usb_af9035(+) btrtl btbcm dvb_usb dvb_usb_v2 btintel dvb_core bluetooth rc_core rfkill x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul aesni_intel aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd drm_kms_helper syscopyarea sysfillrect pcspkr i2c_i801 sysimgblt fb_sys_fops drm i2c_smbus i2c_core r8169 lpc_ich mfd_core mii thermal fan rtc_cmos video button acpi_cpufreq processor snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd crc32c_intel ahci libahci libata xhci_pci ehci_pci xhci_hcd ehci_hcd usbcore usb_common dm_mirror dm_region_hash dm_log dm_mod
[ 2.789936] CPU: 3 PID: 2196 Comm: systemd-udevd Not tainted 4.9.0-gentoo #1
[ 2.789937] Hardware name: ASUS All Series/H81I-PLUS, BIOS 0401 07/23/2013
[ 2.789938] ffffc9000339b690 ffffffff812bd397 ffffc9000339b6e0 0000000000000000
[ 2.789939] ffffc9000339b6d0 ffffffff81055c86 000006300339b6a0 ffff880116c0c000
[ 2.789941] 0000000000000000 0000000000000000 0000000000000001 ffff880116c08000
[ 2.789942] Call Trace:
[ 2.789945] [<ffffffff812bd397>] dump_stack+0x4d/0x66
[ 2.789947] [<ffffffff81055c86>] __warn+0xc6/0xe0
[ 2.789948] [<ffffffff81055cea>] warn_slowpath_fmt+0x4a/0x50
[ 2.789952] [<ffffffffa006d460>] usb_hcd_map_urb_for_dma+0x430/0x560 [usbcore]
[ 2.789954] [<ffffffff814ed5a8>] ? io_schedule_timeout+0xd8/0x110
[ 2.789956] [<ffffffffa006e09c>] usb_hcd_submit_urb+0x9c/0x980 [usbcore]
[ 2.789958] [<ffffffff812d0ebf>] ? copy_page_to_iter+0x14f/0x2b0
[ 2.789960] [<ffffffff81126818>] ? pagecache_get_page+0x28/0x240
[ 2.789962] [<ffffffff8118c2a0>] ? touch_atime+0x20/0xa0
[ 2.789964] [<ffffffffa006f7c4>] usb_submit_urb+0x2c4/0x520 [usbcore]
[ 2.789967] [<ffffffffa006feca>] usb_start_wait_urb+0x5a/0xe0 [usbcore]
[ 2.789969] [<ffffffffa007000c>] usb_control_msg+0xbc/0xf0 [usbcore]
[ 2.789970] [<ffffffffa067903d>] usb_cypress_writemem+0x3d/0x40 [dvb_usb]
[ 2.789972] [<ffffffffa06791cf>] usb_cypress_load_firmware+0x4f/0x130 [dvb_usb]
[ 2.789973] [<ffffffff8109dbbe>] ? console_unlock+0x2fe/0x5d0
[ 2.789974] [<ffffffff8109e10c>] ? vprintk_emit+0x27c/0x410
[ 2.789975] [<ffffffff8109e40a>] ? vprintk_default+0x1a/0x20
[ 2.789976] [<ffffffff81124d76>] ? printk+0x43/0x4b
[ 2.789977] [<ffffffffa0679310>] dvb_usb_download_firmware+0x60/0xd0 [dvb_usb]
[ 2.789979] [<ffffffffa0679898>] dvb_usb_device_init+0x3d8/0x610 [dvb_usb]
[ 2.789981] [<ffffffffa069e302>] dtt200u_usb_probe+0x92/0xd0 [dvb_usb_dtt200u]
[ 2.789984] [<ffffffffa007420c>] usb_probe_interface+0xfc/0x270 [usbcore]
[ 2.789985] [<ffffffff8138bf95>] driver_probe_device+0x215/0x2d0
[ 2.789986] [<ffffffff8138c0e6>] __driver_attach+0x96/0xa0
[ 2.789987] [<ffffffff8138c050>] ? driver_probe_device+0x2d0/0x2d0
[ 2.789988] [<ffffffff81389ffb>] bus_for_each_dev+0x5b/0x90
[ 2.789989] [<ffffffff8138b7b9>] driver_attach+0x19/0x20
[ 2.789990] [<ffffffff8138b33c>] bus_add_driver+0x11c/0x220
[ 2.789991] [<ffffffff8138c91b>] driver_register+0x5b/0xd0
[ 2.789994] [<ffffffffa0072f6c>] usb_register_driver+0x7c/0x130 [usbcore]
[ 2.789994] [<ffffffffa06a5000>] ? 0xffffffffa06a5000
[ 2.789996] [<ffffffffa06a501e>] dtt200u_usb_driver_init+0x1e/0x20 [dvb_usb_dtt200u]
[ 2.789997] [<ffffffff81000408>] do_one_initcall+0x38/0x140
[ 2.789998] [<ffffffff8116001c>] ? __vunmap+0x7c/0xc0
[ 2.789999] [<ffffffff81124fb0>] ? do_init_module+0x22/0x1d2
[ 2.790000] [<ffffffff81124fe8>] do_init_module+0x5a/0x1d2
[ 2.790002] [<ffffffff810c96b1>] load_module+0x1e11/0x2580
[ 2.790003] [<ffffffff810c68b0>] ? show_taint+0x30/0x30
[ 2.790004] [<ffffffff81177250>] ? kernel_read_file+0x100/0x190
[ 2.790005] [<ffffffff810c9ffa>] SyS_finit_module+0xba/0xc0
[ 2.790007] [<ffffffff814f13e0>] entry_SYSCALL_64_fastpath+0x13/0x94
[ 2.790008] ---[ end trace c78a74e78baec6fc ]---
So, allocate the structure dynamically.
Cc: stable@vger.kernel.org # Kernel 4.9+
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
It is likely that a "of_node_put(ep)" is missing here.
There is one in the previous error handling code, and one a few lines
below in the normal case as well.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Declare vb2_ops structure as const as it is only stored in
the ops field of a vb2_queue structure. This field is of type
const, so vb2_ops structures having same properties can be made
const too.
Done using Coccinelle:
@r1 disable optional_qualifier@
identifier i;
position p;
@@
static struct vb2_ops i@p={...};
@ok1@
identifier r1.i;
position p;
struct sta2x11_vip vip;
struct vb2_queue q;
@@
(
vip.vb_vidq.ops=&i@p
|
q.ops=&i@p
)
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct vb2_ops i;
File size details of media/dvb-frontends/rtl2832_sdr.o file remains the
same before and after applying the patch.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Declare vb2_ops structure as const as it is only stored in
the ops field of a vb2_queue structure. This field is of type
const, so vb2_ops structures having same properties can be made
const too.
Done using Coccinelle:
@r1 disable optional_qualifier@
identifier i;
position p;
@@
static struct vb2_ops i@p={...};
@ok1@
identifier r1.i;
position p;
struct sta2x11_vip vip;
struct vb2_queue q;
@@
(
vip.vb_vidq.ops=&i@p
|
q.ops=&i@p
)
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct vb2_ops i;
File size before:
text data bss dec hex filename
8448 440 0 8888 22b8 media/pci/sta2x11/sta2x11_vip.o
File size after:
text data bss dec hex filename
8552 352 0 8904 22c8 media/pci/sta2x11/sta2x11_vip.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Set the subdev devnode pointer right after registration to ensure that
later errors won't skip the subdev when unregistering all devnodes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
The Freescale provided imx-vpu looks for firmware files under /lib/firmware/vpu
by default. Make coda look there for firmware files to ease the update path.
Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
The UK layout of the Microsoft Remote Keyboard has two missing keys:
the hash key, and the messenger key which is sent using rc6 mce.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Bail out early, otherwise we follow a null pointer.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Keep the list up to date with include/media/rc-map.h
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
The driver already parses the "linux,rc-map-name" property. Add this
information to the documentation so .dts maintainers don't have to look
it up in the source-code.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Fixes the following sparse warning:
drivers/media/usb/dvb-usb/gp8psk.c:281:28: warning:
symbol 'gp8psk_fe_ops' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Fix typo in parameter description.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
If ->get_regs_len() callback return 0, we allocate 0 bytes of memory,
what print ugly warning in dmesg, which can be found further below.
This happen on mac80211 devices where ieee80211_get_regs_len() just
return 0 and driver only fills ethtool_regs structure and actually
do not provide any dump. However I assume this can happen on other
drivers i.e. when for some devices driver provide regs dump and for
others do not. Hence preventing to to print warning in ethtool code
seems to be reasonable.
ethtool: vmalloc: allocation failure: 0 bytes, mode:0x24080c2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_ZERO)
<snip>
Call Trace:
[<ffffffff813bde47>] dump_stack+0x63/0x8c
[<ffffffff811b0a1f>] warn_alloc+0x13f/0x170
[<ffffffff811f0476>] __vmalloc_node_range+0x1e6/0x2c0
[<ffffffff811f0874>] vzalloc+0x54/0x60
[<ffffffff8169986c>] dev_ethtool+0xb4c/0x1b30
[<ffffffff816adbb1>] dev_ioctl+0x181/0x520
[<ffffffff816714d2>] sock_do_ioctl+0x42/0x50
<snip>
Mem-Info:
active_anon:435809 inactive_anon:173951 isolated_anon:0
active_file:835822 inactive_file:196932 isolated_file:0
unevictable:0 dirty:8 writeback:0 unstable:0
slab_reclaimable:157732 slab_unreclaimable:10022
mapped:83042 shmem:306356 pagetables:9507 bounce:0
free:130041 free_pcp:1080 free_cma:0
Node 0 active_anon:1743236kB inactive_anon:695804kB active_file:3343288kB inactive_file:787728kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:332168kB dirty:32kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 1225424kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
Node 0 DMA free:15900kB min:136kB low:168kB high:200kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15984kB managed:15900kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 3187 7643 7643
Node 0 DMA32 free:419732kB min:28124kB low:35152kB high:42180kB active_anon:541180kB inactive_anon:248988kB active_file:1466388kB inactive_file:389632kB unevictable:0kB writepending:0kB present:3370280kB managed:3290932kB mlocked:0kB slab_reclaimable:217184kB slab_unreclaimable:4180kB kernel_stack:160kB pagetables:984kB bounce:0kB free_pcp:2236kB local_pcp:660kB free_cma:0kB
lowmem_reserve[]: 0 0 4456 4456
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
In the latest version of the IPv6 Segment Routing IETF draft [1] the
cleanup flag is removed and the flags field length is shrunk from 16 bits
to 8 bits. As a consequence, the input of the HMAC computation is modified
in a non-backward compatible way by covering the whole octet of flags
instead of only the cleanup bit. As such, if an implementation compatible
with the latest draft computes the HMAC of an SRH who has other flags set
to 1, then the HMAC result would differ from the current implementation.
This patch carries those modifications to prevent conflict with other
implementations of IPv6 SR.
[1] https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-05
Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Hauppauge WinTV-dualHD model 01595 is a USB 2.0 dual ATSC/QAM tuner with
the following components:
USB bridge: Empia em28274
Demodulator: 2x LG LGDT3306a at addresses 0xb2 and 0x1c
Tuner: 2x Silicon Labs si2157 at addresses 0xc0 and 0xc4
This patch enables only the first tuner.
Signed-off-by: Kevin Cheng <kcheng@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Adds an i2c mux to the lgdt3306a demodulator. This was done to support
the Hauppauge WinTV-dualHD 01595 USB TV tuner (em28xx), which utilizes two
si2157 tuners behind gate control.
Signed-off-by: Kevin Cheng <kcheng@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
While the wakeup path seems to be set up, this waitqueue is actually
never used as no-one enqueues themselves on the list. As such, wakeups
are meaningless without waiters, so lets just get rid of the whole
thing.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
|
Update the driver version to 50740
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
|
Change the aacraid driver prefix from 1.2-1 to 1.2.1
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
|
Added new copyright messages
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
