| Commit message (Collapse) | Author | Age | Files | Lines |
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Relying on PM-ops for shutting down PHY clocks was a
bad idea since the users (e.g. PCIe/SATA) might not
have been suspended by then.
The main culprit for not shutting down the clocks was
the stray pm_runtime_get() call in probe.
Fix the whole thing in the right way by getting rid
of that pm_runtime_get() call from probe and
removing all PM-ops. It is the sole responsibility
of the PHY user to properly turn OFF and de-initialize
the PHY as part of its suspend routine.
As PHY core serializes init/exit we don't need
to use a spinlock in this driver. So get rid of it.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Port link change with port in resume state should not be
reported to usbcore, as this is an internal state to be
handled by xhci driver. Reporting PLC to usbcore may
cause usbcore clearing PLC first and port change event irq
won't be generated.
Cc: <stable@vger.kernel.org>
Signed-off-by: Zhuang Jin Can <jin.can.zhuang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When the link is just waken, it's in Resume state, and driver sets PLS to
U0. This refers to Phase 1. Phase 2 refers to when the link has completed
the transition from Resume state to U0.
With the fix of xhci: report U3 when link is in resume state, it also
exposes an issue that usb3 roothub and controller can suspend right
after phase 1, and this causes a hard hang in controller.
To fix the issue, we need to prevent usb3 bus suspend if any port is
resuming in phase 1.
[merge separate USB2 and USB3 port resume checking to one -Mathias]
Cc: <stable@vger.kernel.org>
Signed-off-by: Zhuang Jin Can <jin.can.zhuang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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xhci_hub_report_usb3_link_state() returns pls as U0 when the link
is in resume state, and this causes usb core to think the link is in
U0 while actually it's in resume state. When usb core transfers
control request on the link, it fails with TRB error as the link
is not ready for transfer.
To fix the issue, report U3 when the link is in resume state, thus
usb core knows the link it's not ready for transfer.
Cc: <stable@vger.kernel.org>
Signed-off-by: Zhuang Jin Can <jin.can.zhuang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When resetting a device the number of active TTs may need to be
corrected by xhci_update_tt_active_eps, but the number of old active
endpoints supplied to it was always zero, so the number of TTs and the
bandwidth reserved for them was not updated, and could rise
unnecessarily.
This affected systems using Intel's Patherpoint chipset, which rely on
software bandwidth checking. For example, a Lenovo X230 would lose the
ability to use ports on the docking station after enough suspend/resume
cycles because the bandwidth calculated would rise with every cycle when
a suitable device is attached.
The correct number of active endpoints is calculated in the same way as
in xhci_reserve_bandwidth.
Cc: <stable@vger.kernel.org>
Signed-off-by: Brian Campbell <bacam@z273.org.uk>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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virt_dev->num_cached_rings counts on freed ring and is not updated
correctly. In xhci_free_or_cache_endpoint_ring() function, the free ring
is added into cache and then num_rings_cache is incremented as below:
virt_dev->ring_cache[rings_cached] =
virt_dev->eps[ep_index].ring;
virt_dev->num_rings_cached++;
here, free ring pointer is added to a current index and then
index is incremented.
So current index always points to empty location in the ring cache.
For getting available free ring, current index should be decremented
first and then corresponding ring buffer value should be taken from ring
cache.
But In function xhci_endpoint_init(), the num_rings_cached index is
accessed before decrement.
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
virt_dev->num_rings_cached--;
This is bug in manipulating the index of ring cache.
And it should be as below:
virt_dev->num_rings_cached--;
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
Cc: <stable@vger.kernel.org>
Signed-off-by: Aman Deep <aman.deep@samsung.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The xHCI in Intel CherryView / Braswell Platform requires
a driver workaround to get xHCI D3 working. Without this
workaround, xHCI might not enter D3.
Workaround is to configure SSIC PORT as "unused" before D3
entry and "used" after D3 exit. This is done through a
vendor specific register (PORT2_SSIC_CONFIG_REG2 at offset
0x883c), in xhci suspend / resume callbacks.
Verified xHCI D3 works fine in CherryView / Braswell platform.
Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Intel xhci hw that require XHCI_PME_STUCK quirk have as default disabled
xhci from going to D3 state in runtime suspend. Driver needs to verify
it can deal with the hw by calling an ACPI _DSM method to get D3 enabled.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.2-rc4
Only four fixes this time so I'll describe them all.
We have an iomen resource leak fix in mv_udc_core. This bug
exists since v3.3.
Renesas got a fix for how they use dma_map_single() with IOMMU.
The new ulpi bus got an ordering fix, so drivers don't try to
probe ahead of the bus.
And finally, we have a fix for a really old regression with
dwc3, one which could only be exposed by a recent patch from
Subbaraya. Basically, we were startving the controller of
transfer resources.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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This fixes an issue introduced in commit b23c843992b6 (usb: dwc3:
gadget: fix DEPSTARTCFG for non-EP0 EPs) that made sure we would
only use DEPSTARTCFG once per SetConfig.
The trick is that we should use one DEPSTARTCFG per SetConfig *OR*
SetInterface. SetInterface was completely missed from the original
patch.
This problem became aparent after commit 76e838c9f776 (usb: dwc3:
gadget: return error if command sent to DEPCMD register fails)
added checking of the return status of device endpoint commands.
'Set Endpoint Transfer Resource' command was caught failing
occasionally. This is because the Transfer Resource
Index was not getting reset during a SET_INTERFACE request.
Finally, to fix the issue, was we have to do is make sure that
our start_config_issued flag gets reset whenever we receive a
SetInterface request.
To verify the problem (and its fix), all we have to do is run
test 9 from testusb with 'testusb -t 9 -s 2048 -a -c 5000'.
Tested-by: Huang Rui <ray.huang@amd.com>
Tested-by: Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
Fixes: b23c843992b6 (usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs)
Cc: <stable@vger.kernel.org> # v3.2+
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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The dma_map_single and dma_unmap_single should set "gadget->dev.parent"
instead of "&gadget->dev" in the first argument because the parent has
a udc controller's device pointer.
Otherwise, iommu functions are not called in ARM environment.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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There was an omission in transition to devm_xxx resource handling.
iounmap(udc->phy_regs) were removed, but ioremap() was left
without devm_.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: 3517c31a8ece6 ("usb: gadget: mv_udc: use devm_xxx for probe")
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Phy drivers and the ulpi interface providers depend on the
registration of the ulpi bus. Ulpi registers the bus in
module_init(). This could cause unnecessary bus users'
probe delays. i.e. unnecessary -EPROBE_DEFER happening on
ulpi_drivers in case they're registered before ulpi bus
itself.
Reported-by: Zhuo Qiuxu <qiuxu.zhuo@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small serial and tty fixes for reported issues.
All have been in linux-next successfully"
* tag 'tty-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()
serial: core: Fix crashes while echoing when closing
m32r: Add ioreadXX/iowriteXX big-endian mmio accessors
Revert "serial: imx: initialized DMA w/o HW flow enabled"
sc16is7xx: fix FIFO address of secondary UART
sc16is7xx: fix Kconfig dependencies
serial: etraxfs-uart: Fix release etraxfs_uart_ports
tty/vt: Fix the memory leak in visual_init
serial: amba-pl011: Fix devm_ioremap_resource return value check
n_tty: signal and flush atomically
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Pasting text with gpm on a VC produced warning [1]. Reset task state
to TASK_RUNNING in the paste_selection() loop, if the loop did not
sleep.
[1]
WARNING: CPU: 6 PID: 1960 at /home/peter/src/kernels/mainline/kernel/sched/core.c:7286 __might_sleep+0x7f/0x90()
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff8151805e>] paste_selection+0x9e/0x1a0
Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c .....
CPU: 6 PID: 1960 Comm: gpm Not tainted 4.1.0-rc7+tty-xeon+debug #rc7+tty
Hardware name: Dell Inc. Precision WorkStation T5400 /0RW203, BIOS A11 04/30/2012
ffffffff81c9c0a0 ffff8802b0fd3ac8 ffffffff8185778a 0000000000000001
ffff8802b0fd3b18 ffff8802b0fd3b08 ffffffff8108039a ffffffff82ae8510
ffffffff81c9ce00 0000000000000015 0000000000000000 0000000000000000
Call Trace:
[<ffffffff8185778a>] dump_stack+0x4f/0x7b
[<ffffffff8108039a>] warn_slowpath_common+0x8a/0xc0
[<ffffffff81080416>] warn_slowpath_fmt+0x46/0x50
[<ffffffff810ddced>] ? __lock_acquire+0xe2d/0x13a0
[<ffffffff8151805e>] ? paste_selection+0x9e/0x1a0
[<ffffffff8151805e>] ? paste_selection+0x9e/0x1a0
[<ffffffff810ad4ff>] __might_sleep+0x7f/0x90
[<ffffffff8185f76a>] down_read+0x2a/0xa0
[<ffffffff810bb1d8>] ? sched_clock_cpu+0xb8/0xe0
[<ffffffff8150d1dc>] n_tty_receive_buf_common+0x4c/0xba0
[<ffffffff810dc875>] ? mark_held_locks+0x75/0xa0
[<ffffffff81861c95>] ? _raw_spin_unlock_irqrestore+0x65/0x80
[<ffffffff810b49a1>] ? get_parent_ip+0x11/0x50
[<ffffffff8150dd44>] n_tty_receive_buf2+0x14/0x20
[<ffffffff81518117>] paste_selection+0x157/0x1a0
[<ffffffff810b77b0>] ? wake_up_state+0x20/0x20
[<ffffffff815203f8>] tioclinux+0xb8/0x2c0
[<ffffffff81515bfe>] vt_ioctl+0xaee/0x11a0
[<ffffffff810baf75>] ? sched_clock_local+0x25/0x90
[<ffffffff810bbe11>] ? vtime_account_user+0x91/0xa0
[<ffffffff8150810c>] tty_ioctl+0x20c/0xe20
[<ffffffff810bbe11>] ? vtime_account_user+0x91/0xa0
[<ffffffff810b49a1>] ? get_parent_ip+0x11/0x50
[<ffffffff810b4a69>] ? preempt_count_sub+0x49/0x50
[<ffffffff811ab71c>] ? context_tracking_exit+0x5c/0x290
[<ffffffff811ab71c>] ? context_tracking_exit+0x5c/0x290
[<ffffffff81248b98>] do_vfs_ioctl+0x318/0x570
[<ffffffff810dca8d>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff810dc9b5>] ? trace_hardirqs_on_caller+0x115/0x1e0
[<ffffffff81254acc>] ? __fget_light+0x6c/0xa0
[<ffffffff81248e71>] SyS_ioctl+0x81/0xa0
[<ffffffff81862832>] system_call_fastpath+0x16/0x7a
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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While closing, new rx data may be received after the input buffers
have been flushed but before stop_rx() halts receiving [1]. The
new data might not be processed by flush_to_ldisc() until after
uart_shutdown() and normal input processing is re-enabled (ie.,
tty->closing = 0). The race is outlined below:
CPU 0 | CPU 1
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uart_close() |
tty_port_close_start() |
tty->closing = 1 |
tty_ldisc_flush() |
| => IRQ
| while (LSR & data ready)
| uart_insert_char()
| tty_flip_buffer_push()
| <= EOI
stop_rx() | .
uart_shutdown() | .
free xmit.buf | .
tty_port_tty_set(NULL) | .
tty->closing = 0 | .
| flush_to_ldisc()
| n_tty_receive_buf_common()
| __receive_buf()
| ...
| commit_echoes()
| uart_flush_chars()
| __uart_start()
| ** OOPS on port.tty deref **
tty_ldisc_flush() |
Input processing must be prevented from echoing (tty->closing = 1)
until _after_ the input buffers have been flushed again at the end
of uart_close().
[1] In fact, some input may actually be buffered _after_ stop_rx()
since the rx interrupt may have already triggered but not yet been
handled when stop_rx() disables rx interrupts.
Fixes: 2e758910832d ("serial: core: Flush ldisc after dropping port
mutex in uart_close()")
Reported-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c627f2ceb692 ("serial: 8250: Add support for big-endian MMIO accesses")
added support for 32-bit big-endian mmio to the 8250 driver. Support for
ioreadXXbe/iowriteXXbe io accessors was missing from m32r arch, which caused
build errors.
Add trivial macro mmio accessors.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 068500e08dc87ea9a453cc4a500cf3ab28d0f936.
According to some tests, SDMA support is broken at least for i.MX6 without
HW flow control. Different forms of data-corruption appear either with
the ROM firmware for the SDMA controller as well as when loading Freescale
provided SDMA firmware versions 1.1 or 3.1.
Signed-off-by: David Jander <david@protonic.nl>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Calls to regmap_raw_read/write needed register rewrite in a
similar way as function calls to regmap_read/write already had.
This enables reading/writing the serial datastream to the device.
Signed-off-by: Bo Svangård <bo.svangard@embeddedart.se>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When I2C=m and SPI=y or-ing them will produce =y while
what we need is the lower bound, i.e. =m. Fortunately
SPI is a boolean so we need to handle only one special
case.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In probe, we use dev_id as array index of etraxfs_uart_ports and store the
index in port->line. So etraxfs_uart_ports[port->line] should be released
when unload the module.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Niklas Cassel <nks@flawful.org>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If vc->vc_uni_pagedir_loc is not NULL, its refcount needs to be
decreased before vc_uni_pagedir_loc is re-assigned.
unreferenced object 0xffff88002cdd13b0 (size 512):
comm "setfont", pid 503, jiffies 4294896503 (age 722.828s)
hex dump (first 32 bytes):
40 92 61 2b 00 88 ff ff 00 00 00 00 00 00 00 00 @.a+............
00 00 00 00 00 00 00 00 a0 ad 61 2b 00 88 ff ff ..........a+....
backtrace:
[<ffffffff817b755e>] kmemleak_alloc+0x4e/0xb0
[<ffffffff811d4898>] kmem_cache_alloc_trace+0x1c8/0x240
[<ffffffff814ae7d3>] con_do_clear_unimap.isra.2+0x83/0xe0
[<ffffffff814ae9b2>] con_clear_unimap+0x22/0x40
[<ffffffff814a8db8>] vt_ioctl+0xeb8/0x1170
[<ffffffff8149b458>] tty_ioctl+0x208/0xca0
[<ffffffff81207858>] do_vfs_ioctl+0x2f8/0x510
[<ffffffff81207af1>] SyS_ioctl+0x81/0xa0
[<ffffffff817ca2b2>] system_call_fastpath+0x16/0x75
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88002b619240 (size 256):
comm "setfont", pid 503, jiffies 4294896503 (age 722.828s)
hex dump (first 32 bytes):
90 bc 84 d5 00 88 ff ff 58 85 84 d5 00 88 ff ff ........X.......
88 ac 84 d5 00 88 ff ff e0 b1 84 d5 00 88 ff ff ................
backtrace:
[<ffffffff817b755e>] kmemleak_alloc+0x4e/0xb0
[<ffffffff811d4898>] kmem_cache_alloc_trace+0x1c8/0x240
[<ffffffff814ae286>] con_insert_unipair+0x86/0x170
[<ffffffff814af107>] con_set_unimap+0x1b7/0x280
[<ffffffff814a8d65>] vt_ioctl+0xe65/0x1170
[<ffffffff8149b458>] tty_ioctl+0x208/0xca0
[<ffffffff81207858>] do_vfs_ioctl+0x2f8/0x510
[<ffffffff81207af1>] SyS_ioctl+0x81/0xa0
[<ffffffff817ca2b2>] system_call_fastpath+0x16/0x75
[<ffffffffffffffff>] 0xffffffffffffffff
Signed-off-by: Dongxing Zhang <dongxing.zhang@intel.com>
Signed-off-by: Xiaoming Wang <xiaoming.wang@intel.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Value returned by devm_ioremap_resource() was checked for non-NULL but
devm_ioremap_resource() returns IOMEM_ERR_PTR, not NULL. In case of
error this could lead to dereference of ERR_PTR.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Cc: <stable@vger.kernel.org>
Fixes: 3873e2d7f63a ("drivers: PL011: refactor pl011_probe()")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When handling signalling char, claim the termios write lock before
signalling waiting readers and writers to prevent further i/o
before flushing the echo and output buffers. This prevents a
userspace signal handler which may output from racing the terminal
flush.
Reference: Bugzilla #99351 ("Output truncated in ssh session after...")
Fixes: commit d2b6f44779d3 ("n_tty: Fix signal handling flushes")
Reported-by: Filipe Brandenburger <filbranden@google.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are a number of iio and staging driver fixes for reported issues
for 4.2-rc4.
All have been in linux-next for a while with no problems"
* tag 'staging-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (34 commits)
iio:light:stk3310: make endianness independent of host
iio:light:stk3310: move device register to end of probe
iio: mma8452: use iio event type IIO_EV_TYPE_MAG
iio: mcp320x: Fix NULL pointer dereference
iio: adc: vf610: fix the adc register read fail issue
iio: mlx96014: Replace offset sign
iio: magnetometer: mmc35240: fix SET/RESET sequence
iio: magnetometer: mmc35240: Fix SET/RESET mask
iio: magnetometer: mmc35240: Fix crash in pm suspend
iio:magnetometer:bmc150_magn: output intended variable
iio:magnetometer:bmc150_magn: add regmap dependency
staging: vt6656: check ieee80211_bss_conf bssid not NULL
staging: vt6655: check ieee80211_bss_conf bssid not NULL
iio: tmp006: Check channel info on write
iio: sx9500: Add missing init in sx9500_buffer_pre{en,dis}able()
iio:light:ltr501: fix regmap dependency
iio:light:ltr501: fix variable in ltr501_init
iio: sx9500: fix bug in compensation code
iio: sx9500: rework error handling of raw readings
iio: magnetometer: mmc35240: fix available sampling frequencies
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
3rd round of IIO fixes for the 4.2 cycle.
* bmc150_magn - add missing regmap dependency and ensure on a wrong chip
case report hte chip id rather than a previous return value.
* mmc35240 - Fill a null pointer derefrence and wrong SET / RESET logic
that results in North and South being swapped.
* mlx96014 - correct the offset value reported to userspace (wrong sign)
* vf610 - Prevent non aligned register reading.
* mcp320x - Another null pointer deference bug.
* mma8452 - change threshold type from THRESH to MAG to reflect the fact
that the sign of the signal is not known when the event is signaled.
* stk3310 - move device registert to end of probe to avoid race conditions
when coming up, check for invalid client->irq values and make it work
for both endian types of host.
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Data is stored in the device in be16 format. Make use of be16_to_cpu and
cpu_to_be16 to have correct endianness on any host architecture.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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iio_device_register should be the last operation during probe. Therefor
move up interrupt setup code and while at it, change the check for invalid
values of client->irq to be smaller than zero.
Fixes: 3dd477acbdd1 ("iio: light: Add threshold interrupt support for STK3310")
As the device_register makes the userspace interfaces of the device available
it is possible for requests to come in before the probe sequence has finished.
This can lead to unhandled interrupts and similar.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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IIO_EV_TYPE_THRESH in rising direction describes an event where the
threshold is crossed in rising direction, positive or negative values
being possible. This is not the case here.
Since the threshold is no signed value and only the magnitude is compared,
IIO_EV_TYPE_MAG is what describes the behaviour of these devices, see the
sysfs-bus-iio ABI Documentation.
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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On reading in_voltage_scale of we got an NULL pointer dereference Oops.
The reason for this is, that mcp320x_read_raw tries to access
chip_info->resolution from struct mcp320x, but chip_info is never set.
chip_info was never set since the driver was added, but there was no
acute problem, because it was not referenced.
The acute problem exists since
b12206e917ac34bec41b9ff93d37d8bd53a2b3bc
iio: adc: mcp320x. Add support for more ADCs
This patch fixes the issue by setting chip_info in mcp320x_probe.
Signed-off-by: Manfred Schlaegl <manfred.schlaegl@gmx.at>
Reviewed-by: Michael Welling <mwelling@ieee.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Read the register only when the adc register address is 4 byte aligned.
(rather than the other way around).
Signed-off-by: Haibo Chen <haibo.chen@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Cc: <Stable.vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Changed the offset to negative as usual equation is: (raw +
offset)*scale and in this
case offset should be negative (as we deduct 273.15 Kelvin to get temperature
in Celsius).
Signed-off-by: Crt Mori <cmo@melexis.com>
Acked-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The RESET operation invoked in the last instance will align
in the natural way all 3 axis and the chip top view.
Without this, north and south are swapped.
Signed-off-by: Viorel Suman <viorel.suman@intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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This fixes setting the SET/RESET bit in the REG_CTRL0
register.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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We must set i2c client private data at probe in order to
correctly retrieve it in pm suspend/resume, preventing
the following crash:
[ 321.790582] PM: Syncing filesystems ... done.
[ 322.364440] PM: Preparing system for mem sleep
[ 322.400047] PM: Entering mem sleep
[ 322.462178] BUG: unable to handle kernel NULL pointer dereference at 0000036c
[ 322.469119] IP: [<80e0b3d2>] mmc35240_suspend+0x12/0x30
[ 322.474291] *pdpt = 000000002fd6f001 *pde = 0000000000000000
[ 322.479967] Oops: 0000 1 PREEMPT SMP
[ 322.496516] task: a86d0df0 ti: a8766000 task.ti: a8766000
[ 322.570744] Call Trace:
[ 322.573217] [<80c0d2d1>] pm_generic_suspend+0x21/0x30
[ 322.578284] [<80d042ab>] i2c_device_pm_suspend+0x1b/0x30
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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According to the debug/error string, the content of chip_id is supposed to
be output, rather than the return value of the previous operation.
Fixes: c91746a2361d ("iio: magn: Add support for BMC150 magnetometer")
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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bmc150_magn makes use of REGMAP_I2C, so select it to build always without
errors.
Fixes: c91746a2361d ("iio: magn: Add support for BMC150 magnetometer")
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Sometimes bssid can go null on failed association.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Sometimes bssid can go null on failed association.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: <stable@vger.kernel.org> # v3.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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only SAMP_FREQ is writable
Will lead to SAMP_FREQ being written by any attempt to write
to the other exported attributes and hence a rather unexpected
result!
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_preenable’:
drivers/iio/proximity/sx9500.c:682: warning: ‘ret’ may be used uninitialized in this function
drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_predisable’:
drivers/iio/proximity/sx9500.c:706: warning: ‘ret’ may be used uninitialized in this function
If active_scan_mask is empty, it will loop once more over all channels,
doing nothing.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The use of regmap in commit 2f2c96338afc requires REGMAP_I2C to be selected, in
order to meet all dependencies.
Fixes: 2f2c96338afc ("iio: ltr501: Add regmap support.")
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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When filling data->als_contr, the register content read into status needs
to be used, instead of the return status value of regmap_read.
Fixes: 8592a7eefa540 ("iio: ltr501: Add support for ltr559 chip")
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The initial compensation was mistakingly toggling an extra bit in the
control register. Fix this and make sure it's less likely to happen by
introducing an additional macro.
Reported-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Fix error handling so that we can power the chip down even if a raw read
fails.
Reported-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Fix the sampling frequencies according to the datasheet (page 8). The
datasheet specifies the following available frequencies for continuous
mode: 1.5 Hz, 13 Hz, 25 Hz, and 50 Hz.
Also fix comments about the ODR to comply with datasheet.
Signed-off-by: Teodora Baluta <teodora.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The stk3310 driver makes use of regmap_i2c, so this dependency needs to be
reflected in Kconfig.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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In accordance with the recent proximity ABI changes,
STK3310's proximity readings should be un-inversed
in order to return low values for far-away objects
and high values for close ones.
As consequences of this change, iio event directions
have been switched and maximum proximity sensor
reference values have also been adjusted in accordance
with the real readings.
Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The Cosmic Circuits 10001 ADC driver depends on HAS_IOMEM, HAVE_CLK and
REGULATOR together, not just any of these.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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the millisecond values in tcs3414_times should be checked against
val2, not val, which is always zero.
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Reported-by: Stephan Kleisinger <stephan.kleisinger@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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