[PATCH 1/1] i2c-ismt: add Initialize DMA buffer code ismt_access()

[James Ralston]

This patch adds code to Initialize the DMA buffer to compensate for possible hardware data corruption.

Signed-off-by: James Ralston <james.d.ralston@xxxxxxxxx>
---
 drivers/i2c/busses/i2c-ismt.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
index 8ed79a0..d3f30ea 100644
--- a/drivers/i2c/busses/i2c-ismt.c
+++ b/drivers/i2c/busses/i2c-ismt.c
@@ -393,6 +393,9 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr,
 
 	desc = &priv->hw[priv->head];
 
+	/* Initialize the DMA buffer */
+	memset(priv->dma_buffer, 0, (I2C_SMBUS_BLOCK_MAX+1));
+
 	/* Initialize the descriptor */
 	memset(desc, 0, sizeof(struct ismt_desc));
 	desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, read_write);
-- 
1.7.7.6

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