Commit bf416910 authored Sep 24, 2013 by James Ralston Committed by Wolfram Sang Sep 28, 2013

i2c: ismt: initialize DMA buffer



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

Signed-off-by: James Ralston <james.d.ralston@intel.com>
[wsa: changed to use 'sizeof']
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

parent bd63ace4

drivers/i2c/busses/i2c-ismt.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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, sizeof(priv->dma_buffer));

		/* Initialize the descriptor */
		memset(desc, 0, sizeof(struct ismt_desc));
		desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, read_write);