i2c: xgene: Avoid dma_buffer overrun
SMBus block command uses the first byte of buffer for the data length. The dma_buffer should be increased by 1 to avoid the overrun issue. Reported-by: Phil Endecott <phil_gjouf_endecott@chezphil.org> Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
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@ -105,7 +105,7 @@ struct slimpro_i2c_dev {
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struct mbox_chan *mbox_chan;
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struct mbox_client mbox_client;
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struct completion rd_complete;
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u8 dma_buffer[I2C_SMBUS_BLOCK_MAX];
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u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */
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u32 *resp_msg;
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};
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