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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>
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@ -393,6 +393,9 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr,
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desc = &priv->hw[priv->head];
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/* Initialize the DMA buffer */
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memset(priv->dma_buffer, 0, sizeof(priv->dma_buffer));
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/* Initialize the descriptor */
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memset(desc, 0, sizeof(struct ismt_desc));
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desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, read_write);
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