From 3a5952f97a473edfeb3fa34c9ec2e7f10c26c943 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 27 Jun 2011 13:07:43 +0100 Subject: [PATCH] staging:iio:gyro:adis16060 allocate chip state with iio_dev. This is still a very odd driver. Signed-off-by: Jonathan Cameron Acked-by: Michael Hennerich Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/gyro/adis16060_core.c | 59 ++++++++++------------- 1 file changed, 25 insertions(+), 34 deletions(-) diff --git a/drivers/staging/iio/gyro/adis16060_core.c b/drivers/staging/iio/gyro/adis16060_core.c index edf9e3bf3efd..afa52d1961a9 100644 --- a/drivers/staging/iio/gyro/adis16060_core.c +++ b/drivers/staging/iio/gyro/adis16060_core.c @@ -29,27 +29,25 @@ * struct adis16060_state - device instance specific data * @us_w: actual spi_device to write config * @us_r: actual spi_device to read back data - * @indio_dev: industrial I/O device structure * @buf: transmit or receive buffer * @buf_lock: mutex to protect tx and rx **/ struct adis16060_state { struct spi_device *us_w; struct spi_device *us_r; - struct iio_dev *indio_dev; struct mutex buf_lock; u8 buf[3] ____cacheline_aligned; }; -static struct adis16060_state *adis16060_st; +static struct iio_dev *adis16060_iio_dev; static int adis16060_spi_write(struct device *dev, u8 val) { int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adis16060_state *st = iio_dev_get_devdata(indio_dev); + struct adis16060_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); st->buf[2] = val; /* The last 8 bits clocked in are latched */ @@ -64,7 +62,7 @@ static int adis16060_spi_read(struct device *dev, { int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adis16060_state *st = iio_dev_get_devdata(indio_dev); + struct adis16060_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); @@ -141,43 +139,38 @@ static const struct iio_info adis16060_info = { static int __devinit adis16060_r_probe(struct spi_device *spi) { int ret, regdone = 0; - struct adis16060_state *st = kzalloc(sizeof *st, GFP_KERNEL); - if (!st) { - ret = -ENOMEM; + struct adis16060_state *st; + struct iio_dev *indio_dev; + + /* setup the industrialio driver allocated elements */ + indio_dev = iio_allocate_device(sizeof(*st)); + if (indio_dev == NULL) { + ret = -ENOMEM; goto error_ret; } /* this is only used for removal purposes */ - spi_set_drvdata(spi, st); - + spi_set_drvdata(spi, indio_dev); + st = iio_priv(indio_dev); st->us_r = spi; mutex_init(&st->buf_lock); - /* setup the industrialio driver allocated elements */ - st->indio_dev = iio_allocate_device(0); - if (st->indio_dev == NULL) { - ret = -ENOMEM; - goto error_free_st; - } - st->indio_dev->dev.parent = &spi->dev; - st->indio_dev->info = &adis16060_info; - st->indio_dev->dev_data = (void *)(st); - st->indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->dev.parent = &spi->dev; + indio_dev->info = &adis16060_info; + indio_dev->modes = INDIO_DIRECT_MODE; - ret = iio_device_register(st->indio_dev); + ret = iio_device_register(indio_dev); if (ret) goto error_free_dev; regdone = 1; - adis16060_st = st; + adis16060_iio_dev = indio_dev; return 0; error_free_dev: if (regdone) - iio_device_unregister(st->indio_dev); + iio_device_unregister(indio_dev); else - iio_free_device(st->indio_dev); -error_free_st: - kfree(st); + iio_free_device(indio_dev); error_ret: return ret; } @@ -185,11 +178,7 @@ error_ret: /* fixme, confirm ordering in this function */ static int adis16060_r_remove(struct spi_device *spi) { - struct adis16060_state *st = spi_get_drvdata(spi); - struct iio_dev *indio_dev = st->indio_dev; - - iio_device_unregister(indio_dev); - kfree(st); + iio_device_unregister(spi_get_drvdata(spi)); return 0; } @@ -197,12 +186,14 @@ static int adis16060_r_remove(struct spi_device *spi) static int __devinit adis16060_w_probe(struct spi_device *spi) { int ret; - struct adis16060_state *st = adis16060_st; - if (!st) { + struct iio_dev *indio_dev = adis16060_iio_dev; + struct adis16060_state *st; + if (!indio_dev) { ret = -ENODEV; goto error_ret; } - spi_set_drvdata(spi, st); + st = iio_priv(indio_dev); + spi_set_drvdata(spi, indio_dev); st->us_w = spi; return 0; -- 2.20.1