This is a note to let you know that I've just added the patch titled
i2c: ismt: initialize DMA buffer
to the 3.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i2c-ismt-initialize-dma-buffer.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bf4169100c909667ede6af67668b3ecce6928343 Mon Sep 17 00:00:00 2001
From: James Ralston <james.d.ralston@xxxxxxxxx>
Date: Tue, 24 Sep 2013 16:47:55 -0700
Subject: i2c: ismt: initialize DMA buffer
From: James Ralston <james.d.ralston@xxxxxxxxx>
commit bf4169100c909667ede6af67668b3ecce6928343 upstream.
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>
[wsa: changed to use 'sizeof']
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Cc: Jean Delvare <jdelvare@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
Patches currently in stable-queue which might be from james.d.ralston@xxxxxxxxx are
queue-3.11/i2c-ismt-initialize-dma-buffer.patch
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