kernel/git/stable/linux.git/drivers/iio/magnetometer, branch linux-3.14.y

iio: ak8975: Fix NULL pointer exception on early interrupt

2016-05-11T09:21:03+00:00

commit 07d2390e36ee5b3265e9cc8305f2a106c8721e16 upstream. In certain probe conditions the interrupt came right after registering the handler causing a NULL pointer exception because of uninitialized waitqueue: $ udevadm trigger i2c-gpio i2c-gpio-1: using pins 143 (SDA) and 144 (SCL) i2c-gpio i2c-gpio-3: using pins 53 (SDA) and 52 (SCL) Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = e8b38000 [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: snd_soc_i2s(+) i2c_gpio(+) snd_soc_idma snd_soc_s3c_dma snd_soc_core snd_pcm_dmaengine snd_pcm snd_timer snd soundcore ac97_bus spi_s3c64xx pwm_samsung dwc2 exynos_adc phy_exynos_usb2 exynosdrm exynos_rng rng_core rtc_s3c CPU: 0 PID: 717 Comm: data-provider-m Not tainted 4.6.0-rc1-next-20160401-00011-g1b8d87473b9e-dirty #101 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) (...) (__wake_up_common) from [] (__wake_up+0x38/0x4c) (__wake_up) from [] (ak8975_irq_handler+0x28/0x30) (ak8975_irq_handler) from [] (handle_irq_event_percpu+0x88/0x140) (handle_irq_event_percpu) from [] (handle_irq_event+0x44/0x68) (handle_irq_event) from [] (handle_edge_irq+0xf0/0x19c) (handle_edge_irq) from [] (generic_handle_irq+0x24/0x34) (generic_handle_irq) from [] (exynos_eint_gpio_irq+0x50/0x68) (exynos_eint_gpio_irq) from [] (handle_irq_event_percpu+0x88/0x140) (handle_irq_event_percpu) from [] (handle_irq_event+0x44/0x68) (handle_irq_event) from [] (handle_fasteoi_irq+0xb4/0x194) (handle_fasteoi_irq) from [] (generic_handle_irq+0x24/0x34) (generic_handle_irq) from [] (__handle_domain_irq+0x5c/0xb4) (__handle_domain_irq) from [] (gic_handle_irq+0x54/0x94) (gic_handle_irq) from [] (__irq_usr+0x50/0x80) The bug was reproduced on exynos4412-trats2 (with a max77693 device also using i2c-gpio) after building max77693 as a module. Fixes: 94a6d5cf7caa ("iio:ak8975 Implement data ready interrupt handling") Signed-off-by: Krzysztof Kozlowski Tested-by: Gregor Boirie Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio:magnetometer: bugfix magnetometers gain values

2014-10-05T21:52:18+00:00

commit a31d0928999fbf33b3a6042e8bcb7b7f7e07d094 upstream. This patch fix gains values. The first driver was designed using engineering samples, in mass production the values are changed. Signed-off-by: Denis Ciocca Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: Fix endianness issue in ak8975_read_axis()

2014-06-26T19:15:42+00:00

commit 8ba42fb7b17649c9ab5b5e79d4e90370a0b4645e upstream. i2c_smbus_read_word_data() does host endian conversion already, no need for le16_to_cpu() Signed-off-by: Peter Meerwald Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: ak8975: Fix calculation formula for convert micro tesla to gauss unit

2014-02-08T10:28:05+00:00

This effects the reported scale of the raw values, and thus userspace applications that use this value. One micro tesla equal 0.01 gauss. So I have fixed calculation formula And add RAW_TO_GAUSS macro. ASA is in the range of 0 to 255. If multiply 0.003, calculation result(in_magn_[*]_scale) is always 0. So multiply 3000 and return and IIO_VAL_INT_PLUS_MICRO. As a result, read_raw call back function return accurate scale value. Signed-off-by: Beomho Seo Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron

iio:magnetometer:mag3110: Fix output of decimal digits in show_int_plus_micros()

2014-02-08T10:06:27+00:00

need to print leading zeros, hence "%d.%06d" Signed-off-by: Peter Meerwald Signed-off-by: Jonathan Cameron

iio:magnetometer:mag3110: Report busy in _read_raw() / write_raw() when buffer is enabled

2014-02-08T10:06:22+00:00

individual reads are not permitted concurrently with buffered reads Signed-off-by: Peter Meerwald Signed-off-by: Jonathan Cameron

iio:mag:mag3110 replaces IIO_ST macro with explicit entries to struct scan_type

2013-12-17T20:55:50+00:00

The IIO_ST macro no longer covers all the elements of struct scan_type and has this has lead to some bugs being introduced. The drivers are easier to follow with this structure being directly filled so that is now preferred. Signed-off-by: Jonathan Cameron Acked-by: Lars-Peter Clausen

Merge v3.13-rc2 into staging-next

2013-12-03T00:39:07+00:00

we want these fixes in here. Signed-off-by: Greg Kroah-Hartman

iio: hid-sensors: magnetometer : Add sensitivity

2013-11-09T13:51:23+00:00

A number of Properties that can be applied to Data Fields are per data field basis or for all data fields. Adding sensitivity field for all magnetometer fields, which is most commonly used in currently available sensor hubs. Signed-off-by: Srinivas Pandruvada Signed-off-by: Jonathan Cameron

iio: Fix mag3110 Kconfig dependencies

2013-11-09T12:15:34+00:00

Signed-off-by: Peter Meerwald Signed-off-by: Jonathan Cameron