From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:54384 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753752AbdKIJJw (ORCPT ); Thu, 9 Nov 2017 04:09:52 -0500 Subject: Patch "iio: magnetometer: mag3110: claim direct mode during raw writes" has been added to the 4.9-stable tree To: amsfield22@gmail.com, alexander.levin@verizon.com, gregkh@linuxfoundation.org, jic23@kernel.org, pmeerw@pmeerw.net Cc: , From: Date: Thu, 09 Nov 2017 10:09:33 +0100 Message-ID: <15102185736659@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled iio: magnetometer: mag3110: claim direct mode during raw writes to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iio-magnetometer-mag3110-claim-direct-mode-during-raw-writes.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Thu Nov 9 09:48:01 CET 2017 From: Alison Schofield Date: Fri, 20 Jan 2017 12:39:32 -0800 Subject: iio: magnetometer: mag3110: claim direct mode during raw writes From: Alison Schofield [ Upstream commit 80dea21f95a4672cce545f48dc2ca500b69a2584 ] Driver was checking for direct mode but not locking it. Use claim/release helper functions to guarantee the device stays in direct mode during raw writes. Signed-off-by: Alison Schofield Acked-by: Peter Meerwald-Stadler Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/iio/magnetometer/mag3110.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) --- a/drivers/iio/magnetometer/mag3110.c +++ b/drivers/iio/magnetometer/mag3110.c @@ -222,29 +222,39 @@ static int mag3110_write_raw(struct iio_ int val, int val2, long mask) { struct mag3110_data *data = iio_priv(indio_dev); - int rate; + int rate, ret; - if (iio_buffer_enabled(indio_dev)) - return -EBUSY; + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: rate = mag3110_get_samp_freq_index(data, val, val2); - if (rate < 0) - return -EINVAL; + if (rate < 0) { + ret = -EINVAL; + break; + } data->ctrl_reg1 &= ~MAG3110_CTRL_DR_MASK; data->ctrl_reg1 |= rate << MAG3110_CTRL_DR_SHIFT; - return i2c_smbus_write_byte_data(data->client, + ret = i2c_smbus_write_byte_data(data->client, MAG3110_CTRL_REG1, data->ctrl_reg1); + break; case IIO_CHAN_INFO_CALIBBIAS: - if (val < -10000 || val > 10000) - return -EINVAL; - return i2c_smbus_write_word_swapped(data->client, + if (val < -10000 || val > 10000) { + ret = -EINVAL; + break; + } + ret = i2c_smbus_write_word_swapped(data->client, MAG3110_OFF_X + 2 * chan->scan_index, val << 1); + break; default: - return -EINVAL; + ret = -EINVAL; + break; } + iio_device_release_direct_mode(indio_dev); + return ret; } static irqreturn_t mag3110_trigger_handler(int irq, void *p) Patches currently in stable-queue which might be from amsfield22@gmail.com are queue-4.9/iio-pressure-ms5611-claim-direct-mode-during-oversampling-changes.patch queue-4.9/iio-proximity-sx9500-claim-direct-mode-during-raw-proximity-reads.patch queue-4.9/iio-magnetometer-mag3110-claim-direct-mode-during-raw-writes.patch queue-4.9/iio-trigger-free-trigger-resource-correctly.patch