[PATCH 3.19.y-ckt 019/130] iio: adc: vf610: fix the adc register read fail issue
Kamal Mostafa
kamal at canonical.com
Thu Aug 27 22:10:10 UTC 2015
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Fugang Duan <b38611 at freescale.com>
commit bf604a4c44a91cc2ceb60d4643a091b6b32cc999 upstream.
Read the register only when the adc register address is 4 byte aligned.
(rather than the other way around).
Signed-off-by: Haibo Chen <haibo.chen at freescale.com>
Signed-off-by: Fugang Duan <B38611 at freescale.com>
Signed-off-by: Jonathan Cameron <jic23 at kernel.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
drivers/iio/adc/vf610_adc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index e63b8e7..60617ed 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -579,7 +579,7 @@ static int vf610_adc_reg_access(struct iio_dev *indio_dev,
struct vf610_adc *info = iio_priv(indio_dev);
if ((readval == NULL) ||
- (!(reg % 4) || (reg > VF610_REG_ADC_PCTL)))
+ ((reg % 4) || (reg > VF610_REG_ADC_PCTL)))
return -EINVAL;
*readval = readl(info->regs + reg);
--
1.9.1
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