diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2011-04-29 14:17:01 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-03 11:40:02 -0700 |
| commit | 232b1648e5d54b1e3f73463b0b26348889f12ae3 (patch) | |
| tree | ffc75710002cf11e4f1fc32b5b04b7965124dbc3 /drivers/staging/iio/gyro/adxrs450_core.c | |
| parent | caca8c89c24d1fe1470aafacebe7d80910888235 (diff) | |
IIO: GYRO: ADXRS450: Add missing parity bit generation
Add missing parity bit generation. Failure to add the parity bit
caused half of the register accesses to fail.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/iio/gyro/adxrs450_core.c')
| -rw-r--r-- | drivers/staging/iio/gyro/adxrs450_core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/staging/iio/gyro/adxrs450_core.c b/drivers/staging/iio/gyro/adxrs450_core.c index c02e3ef40a0f..5671276580f0 100644 --- a/drivers/staging/iio/gyro/adxrs450_core.c +++ b/drivers/staging/iio/gyro/adxrs450_core.c @@ -59,6 +59,9 @@ static int adxrs450_spi_read_reg_16(struct device *dev, st->tx[2] = 0; st->tx[3] = 0; + if (!(hweight32(be32_to_cpu(*(u32 *)st->tx)) & 1)) + st->tx[3] |= ADXRS450_P; + spi_message_init(&msg); spi_message_add_tail(&xfers[0], &msg); spi_message_add_tail(&xfers[1], &msg); @@ -103,6 +106,10 @@ static int adxrs450_spi_write_reg_16(struct device *dev, st->tx[1] = reg_address << 1 | val >> 15; st->tx[2] = val >> 7; st->tx[3] = val << 1; + + if (!(hweight32(be32_to_cpu(*(u32 *)st->tx)) & 1)) + st->tx[3] |= ADXRS450_P; + spi_message_init(&msg); spi_message_add_tail(&xfers, &msg); ret = spi_sync(st->us, &msg); |