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There is no need to worry about module and __init text disappearing
case, because that ftrace has a module notifier that is called when
a module is being unloaded and before the text goes away and this
code grabs the ftrace_lock mutex and removes the module functions
from the ftrace list, such that it will no longer do any
modifications to that module's text, the update to make functions
be traced or not is done under the ftrace_lock mutex as well.
And by now, __init section codes should not been modified
by ftrace, because it is black listed in recordmcount.c and
ignored by ftrace.
Link: http://lkml.kernel.org/r/1449367378-29430-6-git-send-email-huawei.libin@huawei.com
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Li Bin <huawei.libin@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Backport of this upstream commit into stable kernels :
89c22d8c3b27 ("net: Fix skb csum races when peeking")
exposed a bug in udp stack vs MSG_PEEK support, when user provides
a buffer smaller than skb payload.
In this case,
skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr),
msg->msg_iov);
returns -EFAULT.
This bug does not happen in upstream kernels since Al Viro did a great
job to replace this into :
skb_copy_and_csum_datagram_msg(skb, sizeof(struct udphdr), msg);
This variant is safe vs short buffers.
For the time being, instead reverting Herbert Xu patch and add back
skb->ip_summed invalid changes, simply store the result of
udp_lib_checksum_complete() so that we avoid computing the checksum a
second time, and avoid the problematic
skb_copy_and_csum_datagram_iovec() call.
This patch can be applied on recent kernels as it avoids a double
checksumming, then backported to stable kernels as a bug fix.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since t4_alloc_mem can be failed in memory pressure,
if not properly handled, NULL dereference could be happened.
Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since qlcnic_alloc_mbx_args can be failed,
return value should be checked.
Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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fdo#93557
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
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Chunhao Lin says:
====================
Fix some typos in setting hardware parameter
The typos are in setting RTL8168DP, RTL8168EP and RTL8168H hardware parameters.
This series of patch fix these typos.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The original way is wrong, it always writes ephy reg 0x03.
Signed-off-by: Chunhao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PHY PFM register is in PHY page 0x0a44 register 0x11, not 0x14.
Signed-off-by: Chunhao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The register for setting D3code PFM mode is MISC_1, not DLLPR.
Signed-off-by: Chunhao Lin <hau@realtek.com>
Reviewed-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since 79c441ae505c ("ppp: implement x-netns support"), the PPP layer
calls skb_scrub_packet() whenever the skb is received on the PPP
device. Manually resetting packet meta-data in the L2TP layer is thus
redundant.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some sysfs attributes in /sys/power/ should really be read-only,
so add support for that, convert those attributes to read-only
and drop the stub .show() routines from them.
Original-by: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add a missing space in the definition of struct acpi_device_bus_id.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
[ rjw: Subject and changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The indenting in acpi_battery_set_alarm is inconsistent and has been
so since 2007; commit 94f6c0860139da9219255b8ff45ad42117dda859
("ACPI: SBS: Add support for power_supply class (and sysfs)"). Minor
fix for this, no code functionality change.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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I have a device (Nuvoton 6779D Super-IO IR RC with nuvoton-cir driver)
which works after initial boot but not any longer if I unload and
re-load the driver module.
Digging into the issue I found that unloading the driver calls
pnp_disable_dev although the driver has flag PNP_DRIVER_RES_DO_NOT_CHANGE
set. IMHO this is not right.
Let's have a look at the call chain when probing a device:
pnp_device_probe
1. attaches the device
2. if it's not active and PNP_DRIVER_RES_DO_NOT_CHANGE is not set
it gets activated
3. probes driver
I think pnp_device_remove should do it in reverse order and also
respect PNP_DRIVER_RES_DO_NOT_CHANGE. Therefore:
1. call drivers remove callback
2. if device is active and PNP_DRIVER_RES_DO_NOT_CHANGE is not set
disable it
3. detach device
The change works for me and sounds logical to me.
However I don't know the pnp driver in detail so I might be wrong.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Sergei Shtylyov says:
====================
sh_eth: remove unused BE descriptor support
Here's a set of 2 patches against DaveM's 'net-next.git' repo plus the
recently merged to 'net.git' repo fix for the 16-bit descriptor endianness.
We get rid of ~30 LoCs and ~300 bytes of code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that {cpu|edmac}_to_{edmac|cpu}() functions boiled down to the mere
{cpu|le32}_to_{le32|cpu}() calls, there's no need for these functions
anymore, so just get rid of them.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 71557a37adb5 ("[netdrvr] sh_eth: Add SH7619 support") added support
for the big-endian EDMAC descriptors. However, it was never used and never
worked right until the recent driver fixes. I think we now can just remove
this support, it was only burdening the driver from the start. It should be
easy to do without disturbing the SH platform code, at least for now...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of re-creating the array on the stack each time
is_cmos_rtc_device() gets called, make the array 'static const'.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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acpi_penalize_isa_irq() can be written in fewer lines of code,
so do that. No functional change.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Works-for: Andy Shevchenko <andy.shevchenko@gmail.com>
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Use to_delayed_work() instead of open-coding it.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit f06147f9fbf1 (ACPICA: Hardware: Enable firmware waking vector
for both 32-bit and 64-bit FACS) added three functions that aren't
present in upstream ACPICA, acpi_hw_set_firmware_waking_vectors(),
acpi_set_firmware_waking_vectors() and acpi_set_firmware_waking_vector64(),
to allow Linux to use the previously existing API for setting the
platform firmware waking vector.
However, that wasn't necessary, since the ACPI sleep support code
in Linux can be modified to use the upstream ACPICA's API easily
and the additional functions may be dropped which reduces the code
size and puts the kernel's ACPICA code more in line with the upstream.
Make the changes as per the above. While at it, make the relevant
function desctiption comments reflect the upstream ACPICA's ones.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lv Zheng <lv.zheng@intel.com>
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Michael Chan says:
====================
bnxt_en: Support combined and rx/tx channels.
The bnxt hardware uses a completion ring for rx and tx events. The driver
has to process the completion ring entries sequentially for the events.
The current code only supports an rx/tx ring pair for each completion ring.
This patch series add support for using a dedicated completion ring for
rx only or tx only as an option configuarble using ethtool -L.
The benefits for using dedicated completion rings are:
1. A burst of rx packets can cause delay in processing tx events if the
completion ring is shared. If tx queue is stopped by BQL, this can cause
delay in re-starting the tx queue.
2. A completion ring is sized according to the rx and tx ring size rounded
up to the nearest power of 2. When the completion ring is shared, it is
sized by adding the rx and tx ring sizes and then rounded to the next power
of 2, often with a lot of wasted space.
3. Using dedicated completion ring, we can adjust the tx and rx coalescing
parameters independently for rx and tx.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver can support either all combined or all rx/tx rings. The
default is combined, but the user can now select rx/tx rings.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Modify ring memory allocation and MSIX setup to support shared or
non shared rings and do the proper mapping. Default is still to
use shared rings.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add logic to calculate how many shared or non shared rings can be
supported. Default is to use shared rings.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In order to support dedicated or shared completion rings, the ring
indexing and mapping are re-structured as below:
1. bp->grp_info[] array index is 1:1 with bp->bnapi[] array index and
completion ring index.
2. rx rings 0 to n will be mapped to completion rings 0 to n.
3. If tx and rx rings share completion rings, then tx rings 0 to m will
be mapped to completion rings 0 to m.
4. If tx and rx rings use dedicated completion rings, then tx rings 0 to
m will be mapped to completion rings n + 1 to n + m.
5. Each tx or rx ring will use the corresponding completion ring index
for doorbell mapping and MSIX mapping.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Each bnxt_napi structure may no longer be having both an rx ring and
a tx ring. Check for a valid ring before using it.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, an rx and a tx ring are always paired with a completion ring.
We want to restructure it so that it is possible to have a dedicated
completion ring for tx or rx only.
The bnxt hardware uses a completion ring for rx and tx events. The driver
has to process the completion ring entries sequentially for the rx and tx
events. Using a dedicated completion ring for rx only or tx only has these
benefits:
1. A burst of rx packets can cause delay in processing tx events if the
completion ring is shared. If tx queue is stopped by BQL, this can cause
delay in re-starting the tx queue.
2. A completion ring is sized according to the rx and tx ring size rounded
up to the nearest power of 2. When the completion ring is shared, it is
sized by adding the rx and tx ring sizes and then rounded to the next power
of 2, often with a lot of wasted space.
3. Using dedicated completion ring, we can adjust the tx and rx coalescing
parameters independently for rx and tx.
The first step is to separate the rx and tx ring structures from the
bnxt_napi struct.
In this patch, an rx ring and a tx ring will point to the same bnxt_napi
struct to share the same completion ring. No change in ring assignment
and mapping yet.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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By adding 3 separate functions to dump the different ring states.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When we do cat /sys/kernel/debug/tracing/printk_formats, we hit kernel
panic at t_show.
general protection fault: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 2957 Comm: sh Tainted: G W O 3.14.55-x86_64-01062-gd4acdc7 #2
RIP: 0010:[<ffffffff811375b2>]
[<ffffffff811375b2>] t_show+0x22/0xe0
RSP: 0000:ffff88002b4ebe80 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004
RDX: 0000000000000004 RSI: ffffffff81fd26a6 RDI: ffff880032f9f7b1
RBP: ffff88002b4ebe98 R08: 0000000000001000 R09: 000000000000ffec
R10: 0000000000000000 R11: 000000000000000f R12: ffff880004d9b6c0
R13: 7365725f6d706400 R14: ffff880004d9b6c0 R15: ffffffff82020570
FS: 0000000000000000(0000) GS:ffff88003aa00000(0063) knlGS:00000000f776bc40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f6c02ff0 CR3: 000000002c2b3000 CR4: 00000000001007f0
Call Trace:
[<ffffffff811dc076>] seq_read+0x2f6/0x3e0
[<ffffffff811b749b>] vfs_read+0x9b/0x160
[<ffffffff811b7f69>] SyS_read+0x49/0xb0
[<ffffffff81a3a4b9>] ia32_do_call+0x13/0x13
---[ end trace 5bd9eb630614861e ]---
Kernel panic - not syncing: Fatal exception
When the first time find_next calls find_next_mod_format, it should
iterate the trace_bprintk_fmt_list to find the first print format of
the module. However in current code, start_index is smaller than *pos
at first, and code will not iterate the list. Latter container_of will
get the wrong address with former v, which will cause mod_fmt be a
meaningless object and so is the returned mod_fmt->fmt.
This patch will fix it by correcting the start_index. After fixed,
when the first time calls find_next_mod_format, start_index will be
equal to *pos, and code will iterate the trace_bprintk_fmt_list to
get the right module printk format, so is the returned mod_fmt->fmt.
Link: http://lkml.kernel.org/r/5684B900.9000309@intel.com
Cc: stable@vger.kernel.org # 3.12+
Fixes: 102c9323c35a8 "tracing: Add __tracepoint_string() to export string pointers"
Signed-off-by: Qiu Peiyang <peiyangx.qiu@intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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The ieee802154_llsec_ops structure is never modified, so declare it as
const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Commit 807f16d4db95 ("mtd: core: set some defaults when dev.parent is
set") attempted to provide some default settings for MTDs that
(a) assign the parent device and
(b) don't provide their own name or owner
However, this isn't a perfect drop-in replacement for the boilerplate
found in some drivers, because the MTD name is used by partition
parsers like cmdlinepart, but the name isn't set until add_mtd_device(),
after the parsing is completed. This means cmdlinepart sees a NULL name
and therefore will not work properly.
Fix this by moving the default name and owner assignment to be first in
the MTD registration process.
[Note: this does not fix all reported issues, particularly with NAND
drivers. Will require an additional fix for drivers/mtd/nand/]
Fixes: 807f16d4db95 ("mtd: core: set some defaults when dev.parent is set")
Reported-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Frans Klaver <fransklaver@gmail.com>
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It's been observed that when bluetooth driver fails to
activate the firmware, below hung task warning dump is
displayed after 120 seconds.
[ 36.461022] Bluetooth: vendor=0x2df, device=0x912e, class=255, fn=2
[ 56.512128] Bluetooth: FW failed to be active in time!
[ 56.517264] Bluetooth: Downloading firmware failed!
[ 240.252176] INFO: task kworker/3:2:129 blocked for more than 120 seconds.
[ 240.258931] Not tainted 3.18.0 #254
[ 240.262972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 240.270751] kworker/3:2 D ffffffc000205760 0 129 2 0x00000000
[ 240.277825] Workqueue: events request_firmware_work_func
[ 240.283134] Call trace:
[ 240.285581] [<ffffffc000205760>] __switch_to+0x80/0x8c
[ 240.290693] [<ffffffc00088dae0>] __schedule+0x540/0x7b8
[ 240.295921] [<ffffffc00088ddd0>] schedule+0x78/0x84
[ 240.300764] [<ffffffc0006dfd48>] __mmc_claim_host+0xe8/0x1c8
[ 240.306395] [<ffffffc0006edd6c>] sdio_claim_host+0x74/0x84
[ 240.311840] [<ffffffbffc163d08>] 0xffffffbffc163d08
[ 240.316685] [<ffffffbffc165104>] 0xffffffbffc165104
[ 240.321524] [<ffffffbffc130cf8>] mwifiex_dnld_fw+0x98/0x110 [mwifiex]
[ 240.327918] [<ffffffbffc12ee88>] mwifiex_remove_card+0x2c4/0x5fc [mwifiex]
[ 240.334741] [<ffffffc000596780>] request_firmware_work_func+0x44/0x80
[ 240.341127] [<ffffffc00023b934>] process_one_work+0x2ec/0x50c
[ 240.346831] [<ffffffc00023c6a0>] worker_thread+0x350/0x470
[ 240.352272] [<ffffffc0002419bc>] kthread+0xf0/0xfc
[ 240.357019] 2 locks held by kworker/3:2/129:
[ 240.361248] #0: ("events"){.+.+.+}, at: [<ffffffc00023b840>] process_one_work+0x1f8/0x50c
[ 240.369562] #1: ((&fw_work->work)){+.+.+.}, at: [<ffffffc00023b840>] process_one_work+0x1f8/0x50c
[ 240.378589] task PC stack pid father
[ 240.384501] kworker/1:1 D ffffffc000205760 0 40 2 0x00000000
[ 240.391524] Workqueue: events mtk_atomic_work
[ 240.395884] Call trace:
[ 240.398317] [<ffffffc000205760>] __switch_to+0x80/0x8c
[ 240.403448] [<ffffffc00027279c>] lock_acquire+0x128/0x164
[ 240.408821] kworker/3:2 D ffffffc000205760 0 129 2 0x00000000
[ 240.415867] Workqueue: events request_firmware_work_func
[ 240.421138] Call trace:
[ 240.423589] [<ffffffc000205760>] __switch_to+0x80/0x8c
[ 240.428688] [<ffffffc00088dae0>] __schedule+0x540/0x7b8
[ 240.433886] [<ffffffc00088ddd0>] schedule+0x78/0x84
[ 240.438732] [<ffffffc0006dfd48>] __mmc_claim_host+0xe8/0x1c8
[ 240.444361] [<ffffffc0006edd6c>] sdio_claim_host+0x74/0x84
[ 240.449801] [<ffffffbffc163d08>] 0xffffffbffc163d08
[ 240.454649] [<ffffffbffc165104>] 0xffffffbffc165104
[ 240.459486] [<ffffffbffc130cf8>] mwifiex_dnld_fw+0x98/0x110 [mwifiex]
[ 240.465882] [<ffffffbffc12ee88>] mwifiex_remove_card+0x2c4/0x5fc [mwifiex]
[ 240.472705] [<ffffffc000596780>] request_firmware_work_func+0x44/0x80
[ 240.479090] [<ffffffc00023b934>] process_one_work+0x2ec/0x50c
[ 240.484794] [<ffffffc00023c6a0>] worker_thread+0x350/0x470
[ 240.490231] [<ffffffc0002419bc>] kthread+0xf0/0xfc
This patch adds missing sdio_release_host() call so that wlan driver
thread can claim sdio host.
Fixes: 4863e4cc31d647e1 ("Bluetooth: btmrvl: release sdio bus after firmware is up")
Signed-off-by: Chin-Ran Lo <crlo@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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These are used at least by Acer with BCM43241.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The IDs should all be for Broadcom BCM43241 module, and
hci_bcm is now the proper driver for them. This removes one
of two different ways of handling PM with the module.
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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structures
The aem_rw_sensor_template and aem_ro_sensor_template structures are never
modified, so declare them as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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You can use this to forward packets from ingress to the egress path of
the specified interface. This provides a fast path to bounce packets
from one interface to another specific destination interface.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Switch to use a generic interface for issuing SMC/HVC based on ARM SMC
Calling Convention. Removes now the now unused psci-call.S.
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC for
architectures that may support arm-smccc. It's the responsibility of the
caller to know if the SMC instruction is supported by the platform.
Reviewed-by: Lars Persson <lars.persson@axis.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Adds helpers to do SMC and HVC based on ARM SMC Calling Convention.
CONFIG_HAVE_ARM_SMCCC is enabled for architectures that may support the
SMC or HVC instruction. It's the responsibility of the caller to know if
the SMC instruction is supported by the platform.
This patch doesn't provide an implementation of the declared functions.
Later patches will bring in implementations and set
CONFIG_HAVE_ARM_SMCCC for ARM and ARM64 respectively.
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Fix build warning:
scripts/recordmcount.c:589:4: warning: format not a string
literal and no format arguments [-Wformat-security]
sprintf("%s: failed\n", file);
Fixes: a50bd43935586 ("ftrace/scripts: Have recordmcount copy the object file")
Link: http://lkml.kernel.org/r/1451516801-16951-1-git-send-email-colin.king@canonical.com
Cc: Li Bin <huawei.libin@huawei.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: stable@vger.kernel.org # 2.6.37+
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... rather than play with __get_free_pages() (and figuring out the
allocation order, etc.)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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get_zeroed_page does alloc_page and returns page_address of the result;
subsequent virt_to_page will recover the page, but since the caller
needs both page and its page_address() anyway, why bother going through
that wrapper at all?
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... so virt_to_phys(p) & (PAGE_SIZE - 1) is a very odd way to
spell offset_in_page(p).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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