blob: 745f1a73c79d5ad55f7f04f330424d3d2f1e2959 [file] [log] [blame]
From bf4169100c909667ede6af67668b3ecce6928343 Mon Sep 17 00:00:00 2001
From: James Ralston <james.d.ralston@intel.com>
Date: Tue, 24 Sep 2013 16:47:55 -0700
Subject: [PATCH] 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>
---
drivers/i2c/busses/i2c-ismt.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/i2c/busses/i2c-ismt.c
+++ b/drivers/i2c/busses/i2c-ismt.c
@@ -393,6 +393,9 @@ static int ismt_access(struct i2c_adapte
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);