- 09 Jun, 2021 24 commits
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Hans de Goede authored
Move the check for a second ACPI device for BOSC0200 ACPI fwnodes into a new bmc150_acpi_dual_accel_probe() helper function. This is a preparation patch for adding support for a new "DUAL250E" ACPI Hardware-ID (HID) used on some devices. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210523170103.176958-4-hdegoede@redhat.comSigned-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Hans de Goede authored
On machines with dual accelerometers described in a single ACPI fwnode, the bmc150_accel_probe() instantiates a second i2c-client for the second accelerometer. A pointer to this manually instantiated second i2c-client is stored inside the iio_dev's private-data through bmc150_set_second_device(), so that the i2c-client can be unregistered from bmc150_accel_remove(). Before this commit bmc150_set_second_device() took only 1 argument so it would store the pointer in private-data of the iio_dev belonging to the manually instantiated i2c-client, leading to the bmc150_accel_remove() call for the second_dev trying to unregister *itself* while it was being removed, leading to a deadlock and rmmod hanging. Change bmc150_set_second_device() to take 2 arguments: 1. The i2c-client which is instantiating the second i2c-client for the 2nd accelerometer and 2. The second-device pointer itself (which also is an i2c-client). This will store the second_device pointer in the private data of the iio_dev belonging to the (ACPI instantiated) i2c-client for the first accelerometer and will make bmc150_accel_remove() unregister the second_device i2c-client when called for the first client, avoiding the deadlock. Fixes: 5bfb3a4b ("iio: accel: bmc150: Check for a second ACPI device for BOSC0200") Cc: Jeremy Cline <jeremy@jcline.org> Signed-off-by:
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Hans de Goede authored
The drvdata for iio-parent devices points to the struct iio_dev for the iio-device. So by directly casting the return from i2c_get_clientdata() to struct bmc150_accel_data * the code was ending up storing the second_dev pointer in (and retrieving it from) some semi-random offset inside struct iio_dev, rather then storing it in the second_dev member of the bmc150_accel_data struct. Fix the code to get the struct bmc150_accel_data * pointer to call iio_priv() on the struct iio_dev * returned by i2c_get_clientdata(), so that the correct pointer gets dereferenced. This fixes the following oops on rmmod, caused by trying to dereference the wrong return of bmc150_get_second_device(): [ 238.980737] BUG: unable to handle page fault for address: 0000000000004710 [ 238.980755] #PF: supervisor read access in kernel mode [ 238.980760] #PF: error_code(0x0000) - not-present page ... [ 238.980841] i2c_unregister_device.part.0+0x19/0x60 [ 238.980856] 0xffffffffc0815016 [ 238.980863] i2c_device_remove+0x25/0xb0 [ 238.980869] __device_release_driver+0x180/0x240 [ 238.980876] driver_detach+0xd4/0x120 [ 238.980882] bus_remove_driver+0x5b/0xd0 [ 238.980888] i2c_del_driver+0x44/0x70 While at it also remove the now no longer sensible checks for data being NULL, iio_priv never returns NULL for an iio_dev with non 0 sized private-data. Fixes: 5bfb3a4b ("iio: accel: bmc150: Check for a second ACPI device for BOSC0200") Cc: Jeremy Cline <jeremy@jcline.org> Signed-off-by:
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Jonathan Cameron authored
Since: commit cbacb5ab ("docs: printk-formats: Stop encouraging use of unnecessary %h[xudi] and %hh[xudi]") use of these format strings has been discouraged. As there are only a few such instances in IIO, this is part of a series clearing them out so they don't get copied into new drivers. Use the 0x02x form as the length specifier when used with # includes the 0x prefix and is very unlikely to be what was intended by the author. Signed-off-by:
Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20210603180612.3635250-5-jic23@kernel.org
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Jonathan Cameron authored
Since: commit cbacb5ab ("docs: printk-formats: Stop encouraging use of unnecessary %h[xudi] and %hh[xudi]") use of these format strings has been discouraged. Use the 0x02x form as the length specifier when used with # includes the 0x prefix and is very unlikely to be what was intended by the author. Part of a series removing all uses from IIO in the interestings of avoiding providing bad examples for people to copy. Signed-off-by:
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Jonathan Cameron authored
Since: commit cbacb5ab ("docs: printk-formats: Stop encouraging use of unnecessary %h[xudi] and %hh[xudi]") use of these format strings has been discouraged. Use the 0x02x form as the length specifier when used with # includes the 0x prefix and is very unlikely to be what was intended by the author. As there are not that many in IIO, this is part of an effort to clear them out so we don't have any instances that might get copied into new drivers. Signed-off-by:
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Arnd Bergmann authored
clang complains about multiple instances of printing an integer using the %hhx format string: drivers/iio/light/si1133.c:982:4: error: format specifies type 'unsigned char' but the argument has type 'unsigned int' [-Werror,-Wformat] part_id, rev_id, mfr_id); ^~~~~~~ Print them as a normal integer instead, leaving the "#02" length modifier. Use the 0x02x form as the length specifier when used with # includes the 0x prefix and is very unlikely to be what was intended by the author. Fixes: e01e7eaf ("iio: light: introduce si1133") Signed-off-by:Arnd Bergmann <arnd@arndb.de> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by:
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William Breathitt Gray authored
The struct counter_synapse actions_list member expects a const enum counter_synapse_action array. This patch adds the const qualifier to the stm32_synapse_actions to match actions_list. Cc: Benjamin Gaignard <benjamin.gaignard@st.com> Reviewed-by:
Fabrice Gasnier <fabrice.gasnier@foss.st.com> Signed-off-by:
William Breathitt Gray <vilhelm.gray@gmail.com> Link: https://lore.kernel.org/r/9675edda958ee2ca371d271f46445d3e1934ba82.1623201081.git.vilhelm.gray@gmail.comSigned-off-by:
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William Breathitt Gray authored
The struct counter_synapse actions_list member expects a const enum counter_synapse_action array. This patch adds the const qualifier to the stm32_lptim_cnt_synapse_actions to match actions_list. Reviewed-by:
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William Breathitt Gray authored
The struct counter_synapse actions_list member expects a const enum counter_synapse_action array. This patch adds the const qualifier to the mchp_tc_synapse_actions to match actions_list. Cc: Kamel Bouhara <kamel.bouhara@bootlin.com> Signed-off-by:
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William Breathitt Gray authored
The struct counter_synapse actions_list member expects a const enum counter_synapse_action array. This patch adds the const qualifier to the ftm_quaddec_synapse_actions to match actions_list. Cc: Patrick Havelange <patrick.havelange@essensium.com> Signed-off-by:
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William Breathitt Gray authored
The struct counter_synapse actions_list member expects a const enum counter_synapse_action array. This patch adds the const qualifier to the quad8_index_actions_list and quad8_synapse_actions_list to match actions_list. Acked-by:
Syed Nayyar Waris <syednwaris@gmail.com> Signed-off-by:
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William Breathitt Gray authored
The struct counter_count functions_list member expects a const enum counter_count_function array. This patch adds the const qualifier to the stm32_count_functions to match functions_list. Cc: Benjamin Gaignard <benjamin.gaignard@st.com> Reviewed-by:
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William Breathitt Gray authored
The struct counter_count functions_list member expects a const enum counter_count_function array. This patch adds the const qualifier to the stm32_lptim_cnt_functions to match functions_list. Reviewed-by:
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William Breathitt Gray authored
The struct counter_count functions_list member expects a const enum counter_count_function array. This patch adds the const qualifier to the mchp_tc_count_functions to match functions_list. Cc: Kamel Bouhara <kamel.bouhara@bootlin.com> Signed-off-by:
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William Breathitt Gray authored
The struct counter_count functions_list member expects a const enum counter_count_function array. This patch adds the const qualifier to the interrupt__cnt_functions to match functions_list. Cc: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by:
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William Breathitt Gray authored
The struct counter_count functions_list member expects a const enum counter_count_function array. This patch adds the const qualifier to the quad8_count_functions_list to match functions_list. Acked-by:
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William Breathitt Gray authored
Add some safety by qualifying the quad8_preset_register_set() function parameters as const. Acked-by:
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William Breathitt Gray authored
When the kernel is running in secure boot mode, we lock down the kernel to prevent userspace from modifying the running kernel image. Whilst this includes prohibiting access to things like /dev/mem, it must also prevent access by means of configuring driver modules in such a way as to cause a device to access or modify the kernel image. To this end, annotate module_param* statements that refer to hardware configuration and indicate for future reference what type of parameter they specify. The parameter parser in the core sees this information and can skip such parameters with an error message if the kernel is locked down. The module initialisation then runs as normal, but just sees whatever the default values for those parameters is. Note that we do still need to do the module initialisation because some drivers have viable defaults set in case parameters aren't specified and some drivers support automatic configuration (e.g. PNP or PCI) in addition to manually coded parameters. This patch annotates the 104-QUAD-8 driver. Acked-by:
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William Breathitt Gray authored
It is obvious that devm_counter_register() is used to register a Counter device, so a comment stating such is pointless here. Acked-by:
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William Breathitt Gray authored
"Miscellaneous" is the correct spelling. Reviewed-by:
David Lechner <david@lechnology.com> Signed-off-by:
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William Breathitt Gray authored
Duplicate ABIs are not valid, so let's consolidate these sysfs attributes into the main sysfs-bus-counter documentation file. Cc: Patrick Havelange <patrick.havelange@essensium.com> Reviewed-by:
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Greg Kroah-Hartman authored
Merge tag 'iio-for-5.14a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: 1st set of new IIO/counter device support, features and cleanup for 5.14 There are a couple of large cleanup sets in here alongside a number of new drivers. Note an immutable branch merged to add a stub for i2c_verify_client() as needed to avoid a build issue in the fxls8962af driver as a result of a workaround for a device errata that only applies when i2c interface is used. Counters ======== New device support * intel,quadrature encoder peripheral found on Elkhart Lake platforms. - New driver. IIO === New device support * amstaos,tsl2591 ambient light sensor. - New driver + bindings - Follow up fix to ensure some local variables are suitable for error handling. * fsl,fxls8962af + fsl,fxls8964af accelerometers - New driver + bindings - Includes an errata work around that cause a build bot failure fixed by adding a stub to i2c. * kionix,kxcjk-1013 - Add support for KX023-1025 device. Mostly a different register map that needed to be supported. * murata,sca3300 accelerometer - New driver + bindings * st,lsm9ds0 IMU - Rework of st,sensors driver to cleanly support this new glue driver that enables the two parts of the LSM9DS0. * ti,tsc2046 touchscreen controller ADC. - New driver. Intent here is to use this with existing IIO consumer drivers such as resistive-adc-touch. - Follow up fix to avoid an issue with unsigned subtraction in error check. * ti,tmp117 digital temperature sensor - New driver + bindings Features * adi,ad5755 - Add missing dt-binding doc * adi,ad7298 - Add ACPI ID used on Intel Galileo Gen 1 boards. - Add missing dt-binding doc * adi,ad7476 - Add missing dt-binding doc * adi,ad7746 - Add missing dt-binding doc for this driver that will hopefully move out of staging shortly. Update staging driver to use the binding instead of platform data. * adi,adis16201 + adis16209 - Add missing dt-binding doc * adi,adis16480 - Support burst mode for adis16495 and adis16497 parts. * bosch,bma220 - Add missing dt-binding doc * fsl,mma7455 - Add missing dt-binding doc * iio-rescale - Support handling of processed channels from provider. Some ADCs require (typically non linear) calibration functions to be applied, and so provide only IIO_CHAN_INFO_PROCESSED read back. They can be used as providers to the iio-rescale driver which needs to handle them somewhat differently from IIO_CHAN_INFO_RAW * sensiron,sps30 - Support the serial interface. Note this required significant refactoring of existing driver. * st,st-sensors - Add mount matrix support for normal dt-binding whilst continuing to support the odd ACPI approach for accelerometers. * ti,dac082s085 + similar - Add missing dt-binding doc * trivial-devices - add entries for - memsic,mx4005, memsic,mx6255 and memsic,mxc6655 - sensortek,stk8312 and sensortek,stk8ba50 Cleanup / minor fixes * core - Use devm_add_action_or_reset() to replace boilerplate in several driver and core IIO devm_* functions. - Fix an error path issue introduced by above, that could return an error pointer rather than the expected null from dev_iio_device_alloc() - Move more IIO internals related fields from struct iio_dev to struct iio_dev_opaque. - Drop unused final update of in_loc in demux setup. * Docs - Move some docs from driver specific to core dos to avoid replication of names which the documentation builder does not allow. Note this means adding a few device specific notes to the general docs to cover the more unusual uses of the ABI. - ABI: Move old buffer/* and scan_elements/* docs to obsolete as now we have the bufferX/* variant. Not we are not getting rid of these interfaces, just encouraging new code to use the new interface. * IIO wide: - Tidy up new cases of dev.parent etc being set in drivers as the core now does it. - Fix more cases of possible miss-aligned buffers when passed to iio_push_to_buffers_with_timestamp(). Note we only have one known instance of anyone seeing this bug actually happening, so this has been a low priority cleanup effort for several cycles. - sysfs_emit() used in more drivers. - Runtime pm tidy up and use of pm_runtime_resume_and_get() - Buffer alignment fixes as iio_push_to_buffers_with_timestamp requires that the timestamp when inserted by naturally aligned + consumers can assume that all fields are naturally aligned. Part of a long running effort, with at least 2 more series to come tackling additional variants. - Stop specifying "mount-matrix" property name in every lookup of the mount matrix from firmware by hard coding it in the core. * adi,ad7476 - Handle the variety of different regulators used by the parts supported by this driver (came up in dt-binding review) * adi,ad7746 - Trivial drop of if (ret) return ret; return 0; pattern - Tidy up comments - Pull capdac setup out to own function. * adi,ad7766 - Trivial drop of if (ret) return ret; return 0; pattern * adi,adis - Avoid returning error codes in interrupt handlers. - Handle a failure in spi_write in the trigger handler. - Rework to add updating of device page after changing it. - Don't push data to IIO buffers when read failed. - Add configuration of burst max speed to core avoid handling this in each driver. - Use the adis_dev_lock() helper in adis16260 and adis16136 drivers. - Excessive includes cleanup via include-what-you-use static checker after zero day highlighted that these needed updating. * afe - Amend binding to add #io-channel-cells, thus allowing this IIO consumer to also be an IIO provider. * aosong,am2315 - Drop ACPI id. Unlikely this one is in the wild and it isn't valid ACPI naming. * bosch,bma180 - Adding missing bandwidth settings (500, 1000 Hz) * bosch,bme680 - Drop ACPI id. Unlikely this one is in the wild and it isn't valid ACPI naming. * ep93xx_adc, - Drop a redundant error print. * maxim,max118 - Convert remainder of probe() to devm_ managed functions. - Avoid some repeated jumping back and forth between iio_dev and spi structures. * maxim,max11100 - Use get_unaligned_be16() instead of open coding. - Convert remainder of probe() to devm_ managed functions. * samsung,exynos_adc - Unused error value dropped. * sensiron,sgp30 - Drop use of %hx in favor of %x and letting the normal type conversion work. * sensortek,stk8312 - Add lowercase device id and note uppercase version deprecated. - Drop ACPI id. Unlikely this one is in the wild and it isn't valid ACPI naming. * sprx,sc72xx_adc - add MODULE_DEVICE_TABLE * st,lsm6dsx - Fix docs of valid ODRs * st,sensors - dt-binding rework. Two efforts on this crossed in a previous cycle so this update cherry picks the best of the two yaml conversions. - Don't copy the channel spec array as now ext_info is no longer modified. * st,stm32-adc - tidy up some docs that were marked as kernel-doc but aren't. * ti,adc081c, ti,adc0832, ti,adc108s102 and ti,adc161s626 - Convert remainder of probe() functions to devm_ managed functions to simplify error handing and remove paths. * tag 'iio-for-5.14a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (171 commits) i2c: core: Add stub for i2c_verify_client() if !CONFIG_I2C iio: adis: Cleanout unused headers iio: accel: bma180: Add missing 500 Hz / 1000 Hz bandwidth counter: Add support for Intel Quadrature Encoder Peripheral staging: iio: cdc: ad7746: extract capac setup to own function staging: iio: cdc: ad7746: clean up probe return staging: iio: cdc: ad7746: remove ordinary comments iio: adc: ti-adc161s626: Use devm managed functions for all of probe. iio: adc: ti-adc108s102: Use devm managed functions for all of probe() iio: adc: ti-adc0832: Use devm managed functions for all of probe() iio: adc: ti-adc081c: Use devm managed functions for all of probe() iio: adc: max1118: Avoid jumping back and forth between spi and iio structures iio: adc: max1118: Use devm_ managed functions for all of probe iio: adc: max11100: Use devm_ functions for rest of probe() iio: adc: max11100: Use get_unaligned_be16() rather than opencoding. iio: chemical: sgp30: Drop use of %hx in format string. iio: gyro: st_gyro: Support mount matrix iio: magnetometer: st_magn: Support mount matrix iio: accel: st_sensors: Stop copying channels iio: accel: st_sensors: Support generic mounting matrix ...
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Fabio M. De Francesco authored
This module defines four alias for printk(). Removed them all, because they are not used anywhere else in the driver. Converted the only exception to the explicit use of printk(). Signed-off-by:
Fabio M. De Francesco <fmdefrancesco@gmail.com> Link: https://lore.kernel.org/r/20210606034038.9657-1-fmdefrancesco@gmail.comSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 07 Jun, 2021 2 commits
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Jonathan Cameron authored
Adds a stub needed to resolve a build conflict for the fxls8962af driver.
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Jonathan Cameron authored
If I2C is not compiled, there is no way we should see a call to i2c_verify_client() on a device that is an i2c client. As such, provide a stub to return NULL to resolve an associated build failure. The build is failing with this link error ld: fxls8962af-core.o: in function `fxls8962af_fifo_transfer': fxls8962af-core.c: undefined reference to `i2c_verify_client' Reported-by:
Tom Rix <trix@redhat.com> Signed-off-by:
Sean Nyekjaer <sean@geanix.com> Acked-by:
Wolfram Sang <wsa@kernel.org> Link: https://lore.kernel.org/r/20210603165835.3594557-1-jic23@kernel.org
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- 04 Jun, 2021 14 commits
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Stefan Wahren authored
The function slot_handler_func() has very deep indentations. Moving the poll handling into separate function could improve the readability. Use the return value to keep the poll_needed handling at the same place. Signed-off-by:
Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1622735405-9980-17-git-send-email-stefan.wahren@i2se.comSigned-off-by:
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Stefan Wahren authored
It's more intuitive to have the EXPORT_SYMBOL() call below the matching definition. Signed-off-by:
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Stefan Wahren authored
Some queue_message() calls are still rather complex to read. So store the message ids in a local variable in those cases. Signed-off-by:
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Stefan Wahren authored
The function parse_open() already has bail out sections like fail_open. So use a goto for the other error cases like payload size is too small and listening service cannot be found. This avoids two indentation levels. Signed-off-by:
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Stefan Wahren authored
This moves the special handling for data messages from process_free_queue() into a new function. After this process_free_queue() has less extreme indentation and should be easier to read. Signed-off-by:
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Stefan Wahren authored
During a recent review Dan Carpenter reported that the function naming of (un)lock_service is misleading. They are like wrapper around kref_get / kref_put and don't have anything to do with locking. So use a name which represent more the actual behavior. Btw add the vchiq prefix to avoid possible name conflicts. Signed-off-by:
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Stefan Wahren authored
During a recent review Dan Carpenter noticed a double negation in a WARN_ON. But a quick search revealed more unnecessary complex WARN_ON conditions. This change should simplify them. Signed-off-by:
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Stefan Wahren authored
VCHIQ_MAKE_MSG isn't optimal because a lot of message types doesn't need a parameter. So better define a macro for every message type which is used. Signed-off-by:
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Stefan Wahren authored
Make it clear and use a define for shifting the message type. Signed-off-by:
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Stefan Wahren authored
Add () around macro argument to avoid precedence issues Signed-off-by:
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Stefan Wahren authored
This fixes the checkpatch issues regarding missing spaces around operators. Signed-off-by:
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Stefan Wahren authored
Use static_assert from the kernel instead of opencode it. Signed-off-by:
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Stefan Wahren authored
The macro IS_POW2 is only used to ensure some size are powers of 2. Better use BUILD_BUG_ON_NOT_POWER_OF_2 for this. Since this must be done in a function, merge all these checks in a new function. Signed-off-by:
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Stefan Wahren authored
There is no need to export those definitions, so keep them in the source file. Signed-off-by:
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