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| author | James Ralston <james.d.ralston@intel.com> | 2013-09-24 16:47:55 -0700 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2013-09-28 16:32:12 +0200 |
| commit | bf4169100c909667ede6af67668b3ecce6928343 (patch) | |
| tree | fc4afe632fdeee15ebaad6db8ef5a86a2bcc2ce2 | |
| parent | bd63ace4dc4290165bbf3bf546eba50453d0aa9d (diff) | |
| download | linux-bf4169100c909667ede6af67668b3ecce6928343.tar.bz2 | |
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>
| -rw-r--r-- | 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 8ed79a086f85..1672effbcebb 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, sizeof(priv->dma_buffer)); + /* Initialize the descriptor */ memset(desc, 0, sizeof(struct ismt_desc)); desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, read_write); |