[PATCH 20/92] iio: adc: hi8435: Fix alignment for DMA safety

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1.  Switch to the updated
IIO_ALIGN definition.

Fixes: 72aa29ce0a59 ("iio: adc: hi8435: Holt HI-8435 threshold detector")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
---
 drivers/iio/adc/hi8435.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
index 8eb0140df133..2a96a185b1db 100644
--- a/drivers/iio/adc/hi8435.c
+++ b/drivers/iio/adc/hi8435.c
@@ -49,7 +49,7 @@ struct hi8435_priv {
 
 	unsigned threshold_lo[2]; /* GND-Open and Supply-Open thresholds */
 	unsigned threshold_hi[2]; /* GND-Open and Supply-Open thresholds */
-	u8 reg_buffer[3] ____cacheline_aligned;
+	u8 reg_buffer[3] __aligned(IIO_ALIGN);
 };
 
 static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val)
-- 
2.36.0




[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Input]     [Linux Kernel]     [Linux SCSI]     [X.org]

  Powered by Linux