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iio: mcp320x: Fix occasional incorrect readings

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Without the cacheline alignment, the readings will occasionally incorrectly
return 0.

Signed-off-by: Michael Welling <mwelling@ieee.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Michael Welling 2015-05-06 11:49:17 -05:00 committed by Jonathan Cameron
parent 1d93353da5
commit 0e81bc99a0
1 changed files with 3 additions and 3 deletions
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6
drivers/iio/adc/mcp320x.c
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@ -60,12 +60,12 @@ struct mcp320x {
struct spi_message msg;
struct spi_transfer transfer[2];
u8 tx_buf;
u8 rx_buf[2];
struct regulator *reg;
struct mutex lock;
const struct mcp320x_chip_info *chip_info;
u8 tx_buf ____cacheline_aligned;
u8 rx_buf[2];
};
static int mcp320x_channel_to_tx_data(int device_index,