pch_spi_set_tx() frees data->pkt_tx_buff on failure of kzalloc() for
data->pkt_rx_buff, but its caller, pch_spi_process_messages(), will
free data->pkt_tx_buff again. Set data->pkt_tx_buff to NULL after
kfree() to avoid double free.
Signed-off-by: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1620284888-65215-1-git-send-email-f.fangjian@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
sg_init_table zeroes its first argument, so the allocation of that argument
doesn't have to.
the semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x,n,flags;
@@
x =
- kcalloc
+ kmalloc_array
(n,sizeof(*x),flags)
...
sg_init_table(x,n)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1600601186-7420-12-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Before generic upgrade, both .suspend() and .resume() were invoking
pci_enable_wake(pci_dev, PCI_D3hot, 0). Hence, disabling wakeup in both
states. (Normal trend is .suspend() enables and .resume() disables the
wakeup.)
This was ambiguous and may be buggy. Instead of replicating the legacy
behavior, drop the wakeup-disable call.
Fixes: f185bcc779 ("spi: spi-topcliff-pch: use generic power management")
Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200727172936.661567-1-vaibhavgupta40@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Drivers using legacy PM have to manage PCI states and device's PM states
themselves. They also need to take care of configuration registers.
With improved and powerful support of generic PM, PCI Core takes care of
above mentioned, device-independent, jobs.
This driver makes use of PCI helper functions like
pci_save/restore_state(), pci_enable/disable_device(), pci_enable_wake()
and pci_set_power_state() to do required operations. In generic mode, they
are no longer needed.
Change function parameter in both .suspend() and .resume() to
"struct device*" type. Use dev_get_drvdata() to get drv data.
Compile-tested only.
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Link: https://lore.kernel.org/r/20200720155714.714114-1-vaibhavgupta40@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Fixes the following W=1 kernel build warning(s):
drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'io_base_addr' not described in 'pch_spi_data'
drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'pkt_tx_buff' not described in 'pch_spi_data'
drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'pkt_rx_buff' not described in 'pch_spi_data'
drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'dma' not described in 'pch_spi_data'
drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'use_dma' not described in 'pch_spi_data'
drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'save_total_len' not described in 'pch_spi_data'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200717135424.2442271-12-lee.jones@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
For many places in the spi drivers, using the new `spi_transfer_delay`
helper is straightforward.
It's just replacing:
```
if (t->delay_usecs)
udelay(t->delay_usecs);
```
with `spi_transfer_delay(t)` which handles both `delay_usecs` and the new
`delay` field.
This change replaces in all places (in the spi drivers) where this change
is simple.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20190926105147.7839-10-alexandru.ardelean@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation version 2 of the license this program
is distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 100 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.918357685@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pch_alloc_dma_buf allocated tx, rx DMA buffers which can fail. Further,
these buffers are used without a check. The patch checks for these
failures and sends the error upstream.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Use match_string() instead of reimplementing it (Andy Shevchenko)
- Enable SERR# forwarding for all bridges (Bharat Kumar Gogada)
- Use Latency Tolerance Reporting if already enabled by platform (Bjorn
Helgaas)
- Save/restore LTR info for suspend/resume (Bjorn Helgaas)
- Fix DPC use of uninitialized data (Dongdong Liu)
- Probe bridge window attributes only once at enumeration-time to fix
device accesses during rescan (Bjorn Helgaas)
- Return BAR size (not "size -1 ") from pci_size() to simplify code (Du
Changbin)
- Use config header type (not class code) identify bridges more
reliably (Honghui Zhang)
- Work around Intel Denverton incorrect Trace Hub BAR size reporting
(Alexander Shishkin)
- Reorder pciehp cached state/hardware state updates to avoid missed
interrupts (Mika Westerberg)
- Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann)
- Mark expected switch fall-through (Mathieu Malaterre)
- Use of_node_name_eq() for node name comparisons (Rob Herring)
- Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang)
- Consolidate Rohm Vendor ID definitions (Andy Shevchenko)
- Use u32 (not __u32) for things not exposed to userspace (Logan
Gunthorpe)
- Fix locking semantics of bus and slot reset interfaces (Alex
Williamson)
- Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang)
- Allow portdrv to claim subtractive decode Ports so PCIe services will
work for them (Honghui Zhang)
- Report PCIe links that become degraded at run-time (Alexandru
Gagniuc)
- Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt
hotplug (Mika Westerberg)
- Revert runtime PM suspend/resume callbacks that broke PME on network
cable plug (Mika Westerberg)
- Disable Data Link State Changed interrupts to prevent wakeup
immediately after suspend (Mika Westerberg)
- Extend altera to support Stratix 10 (Ley Foon Tan)
- Allow building altera driver on ARM64 (Ley Foon Tan)
- Replace Douglas with Tom Joseph as Cadence PCI host/endpoint
maintainer (Lorenzo Pieralisi)
- Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro)
- Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I)
- Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay
Abraham I)
- Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I)
- Simplify dwc (remove unnecessary header includes, name variables
consistently, reduce inverted logic, etc) (Gustavo Pimentel)
- Add i.MX8MQ support (Andrey Smirnov)
- Add message to help debug dwc MSI-X mask bit errors (Gustavo
Pimentel)
- Work around imx7d PCIe PLL erratum (Trent Piepho)
- Don't assert qcom reset GPIO during probe (Bjorn Andersson)
- Skip dwc MSI init if MSIs have been disabled (Lucas Stach)
- Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
endpoint framework (Wen Yang)
- Add interface to discover supported endpoint features to replace a
bitfield that wasn't flexible enough (Kishon Vijay Abraham I)
- Implement the new supported-feature interface for designware-plat,
dra7xx, rockchip, cadence (Kishon Vijay Abraham I)
- Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)
- Add layerscape endpoint mode support (Xiaowei Bao)
- Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya
Nakamura)
- Rework hv_irq_unmask() to use cpumask_to_vpset() instead of
open-coded reimplementation (Maya Nakamura)
- Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura)
- Fix mediatek MMIO size computation to enable full size of available
MMIO space (Honghui Zhang)
- Fix mediatek DMA window size computation to allow endpoint DMA access
to full DRAM address range (Honghui Zhang)
- Fix mvebu prefetchable BAR regression caused by common bridge
emulation that assumed all bridges had prefetchable windows (Thomas
Petazzoni)
- Make advk_pci_bridge_emul_ops static (Wei Yongjun)
- Configure MPS settings for VMD root ports (Jon Derrick)
* tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
PCI: Update PCIEPORTBUS Kconfig help text
PCI: Fix "try" semantics of bus and slot reset
PCI/LINK: Report degraded links via link bandwidth notification
dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0
PCI: altera: Enable driver on ARM64
PCI: altera: Add Stratix 10 PCIe support
PCI/PME: Fix possible use-after-free on remove
PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static
PCI: dwc: skip MSI init if MSIs have been explicitly disabled
PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()
PCI: hv: Replace hv_vp_set with hv_vpset
PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt
PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM
PCI: mediatek: Fix memory mapped IO range size computation
PCI: dwc: Remove superfluous shifting in definitions
PCI: dwc: Make use of GENMASK/FIELD_PREP
PCI: dwc: Make use of BIT() in constant definitions
PCI: dwc: Share code for dw_pcie_rd/wr_other_conf()
PCI: dwc: Make use of IS_ALIGNED()
PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ
...
Move the Rohm Vendor ID to pci_ids.h instead of defining it in several
drivers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
In pch_spi_handle_dma, it doesn't check for NULL returns of kcalloc
so it would result in an Oops.
Fixes: c37f3c2749 ("spi/topcliff_pch: DMA support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The script "checkpatch.pl" pointed information out like the following.
WARNING: quoted string split across lines
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
* Multiplications for the size determination of memory allocations
indicated that array data structures should be processed.
Thus use the corresponding function "kcalloc".
This issue was detected by using the Coccinelle software.
* Replace the specification of a data structure by pointer dereferences
to make the corresponding size determination a bit safer according to
the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
The script "checkpatch.pl" pointed information out like the following.
WARNING: void function return statements are not generally useful
Thus remove such statements here.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
Since commit 0d35773979 ("spi: spi-topcliff-pch: Remove deprecated
create_singlethread_workqueue"), 'retval' is no more used in this function.
So some now dead code can be removed.
Also axe a debug message which looks useless now.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
The workqueue "wk" serves as a queue for carrying out execution
of requests. It has a single work item(&drv_data->work) and hence doesn't
require ordering. Also, it is not being used on a memory reclaim path.
Hence, the singlethreaded workqueue has been replaced with the use of
system_wq.
System workqueues have been able to handle high level of concurrency
for a long time now and hence it's not required to have a singlethreaded
workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue
created with create_singlethread_workqueue(), system_wq allows multiple
work items to overlap executions even on the same CPU; however, a
per-cpu workqueue doesn't have any CPU locality or global ordering
guarantee unless the target CPU is explicitly specified and thus the
increase of local concurrency shouldn't make any difference.
Work item has been flushed in pch_spi_free_resources() to ensure that
there are no pending tasks while disconnecting the driver.
Also dropped the label 'err_return' since it's not being used anymore.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The DMA is a function 0 of the multifunction device where SPI host is attached.
Thus, we may avoid to hardcode PCI slot number.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Commit 16052827d9 ("dmaengine/dma_slave:
introduce inline wrappers") changed the code to use the new API, but forgot
to update the error messages.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
--
v2:
- New
Signed-off-by: Mark Brown <broonie@linaro.org>
The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
If during a SPI transfer with len larger than PCH_MAX_FIFO_DEPTH and the
IRQ handler happens to be called when the transmit FIFO is already empty,
and SPSR_FI_BIT is set consequently, the message
"spi_master spi32766: pch_spi_handler_sub : Transfer is not completed"
is spammed to the systemlog, because tx_index has already increased
further due to the next bytes to be written. This case is uncritical as
new bytes have already been written.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Ensure all registered platform devices are unregistered on probe() error paths.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
If during registering SPI master due to SPI device probing a SPI transfer
is issued the DMA buffers are not allocated yet.
This fixes the following oops:
pch_spi 0000:02:0c.1: enabling device (0000 -> 0002)
pch_spi 0000:02:0c.1: master is unqueued, this is deprecated
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c125aa05>] pch_spi_handle_dma+0x15c/0x6f4
[...]
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
bus_num might be asigned dynamically to e.g. 32766. In this case the
calculated DMA channel based on SPI bus number is bogus. Use SPI channel
number instead for calculation.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Set "master->max_speed_hz = PCH_MAX_BAUDRATE" then we can remove pch_spi_setup.
In additional, pspi->max_speed_hz will never be 0 because it's default value
will be set to master->max_speed_hz.
Also remove list_empty checking in pch_spi_transfer() because the checking is
done by spi core.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
The implementation in spi_setup() already set spi->bits_per_word = 8 when
spi->bits_per_word is 0 before calling spi->master->setup.
So we don't need to do it again in setup() callback.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mark Brown <broonie@linaro.org>
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
User-visible strings are more difficult to grep from sources if they are
separated to multiple source lines. This is worse than over 80 columns long
line code style violation.
Fix this by making those to single-line strings or by breaking them between
variables.
While at there, convert if (printk_ratelimit()) dev_warn() to use
dev_warn_ratelimited in spi-pxa2xx.c.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
If pci_iomap() returns NULL, adding "PCH_ADDRESS_SIZE * plat_dev->id"
can make it non-NULL which breaks the error handling.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Fixes the following type of warnings:
drivers/spi/spi-topcliff-pch.c:370:52: warning:
Using plain integer as NULL pointer
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Fill in the recently added spi_master.bits_per_word_mask field in as
many drivers as possible. Make related cleanups, such as removing any
redundant error-checking, or empty setup callbacks.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Fix to return -ENOMEM in the platform_device_alloc() error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
free_irq() expects the same pointer that was passed to request_irq(), otherwise
the IRQ is not freed.
The issue was found using the following coccinelle script:
<smpl>
@r1@
type T;
T devid;
@@
request_irq(..., devid)
@r2@
type r1.T;
T devid;
position p;
@@
free_irq@p(..., devid)
@@
position p != r2.p;
@@
*free_irq@p(...)
</smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Since we will remove items off the list using list_del_init() we need
to use a safe version of the list_for_each_entry() macro aptly named
list_for_each_entry_safe().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@sirena.org.uk>
Add the missing platform_driver_unregister() before return
from pch_spi_init() in the error handling case.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
CONFIG_HOTPLUG is going away as an option. As result the __dev*
markings will be going away.
Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.
Bill Pemberton has done most of the legwork on this series. I've used
his script to purge the attributes from the drivers/gpio tree.
Reported-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
No framework work here, only a bunch of driver updates of varying sizes:
- Factoring out of the core hardware support from the MXS MMC driver by
Marek Vasut to allow the hardware to also be used for SPI.
- Lots of error handling cleanups from Guenter Roeck
- Removal of the existing Tegra driver which is quite comprehensively
broken as detailed in the changelog for the removal.
- DT suppport for the PL022 and GPIO drivers.
- pinctrl support for OMAP and PL022.
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Merge tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc
Pull spi updates from Mark Brown:
"No framework work here, only a bunch of driver updates of varying
sizes:
- Factoring out of the core hardware support from the MXS MMC driver
by Marek Vasut to allow the hardware to also be used for SPI.
- Lots of error handling cleanups from Guenter Roeck
- Removal of the existing Tegra driver which is quite comprehensively
broken as detailed in the changelog for the removal.
- DT suppport for the PL022 and GPIO drivers.
- pinctrl support for OMAP and PL022."
Pulling from Mark Brown as Grant Likely is still busy moving.
* tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: (53 commits)
spi: remove completely broken Tegra driver
spi/imx: set the inactive state of the clock according to the clock polarity
spi/pl022: get/put resources on suspend/resume
spi/pl022: use more managed resources
spi/pl022: Devicetree support w/o platform data
spi/s3c64xx: Don't free controller_data on non-dt platforms
spi: omap2-mcspi: add pinctrl support
spi/pl022: adopt pinctrl support
spi: omap2-mcspi: Cleanup the omap2_mcspi_txrx_dma function
spi/gpio: Fix stub for spi_gpio_probe_dt()
spi/mxs: Make the SPI block clock speed configurable via DT
spi: spi-sh-hspi: drop frees of devm_ alloc'd data
spi/pl022: Fix chipselects pointer computation
spi: spi-tle62x0: Use module_spi_driver macro
mxs/spi: Rework the mxs_ssp_timeout to be more readable
mxs/spi: Decrement the DMA/PIO border
mxs/spi: Increment the transfer length only if transfer succeeded
mxs/spi: Fix issues when doing long continuous transfer
spi: spi-gpio: Add DT bindings
spi: spi-gpio: store chipselect information in private structure
...
