| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 45/54] i2c: ismt: initialize DMA buffer | Date | Fri, 1 Nov 2013 15:04:13 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: James Ralston <james.d.ralston@intel.com>
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@intel.com> [wsa: changed to use 'sizeof'] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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);
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