Messages in this thread Patch in this message |  | | From | Hoan Tran <> | Subject | [PATCH] i2c: xgene: Avoid dma_buffer overrun | Date | Mon, 10 Oct 2016 10:13:10 -0700 |
| |
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> --- drivers/i2c/busses/i2c-xgene-slimpro.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-xgene-slimpro.c b/drivers/i2c/busses/i2c-xgene-slimpro.c index 4233f56..3c38029 100644 --- a/drivers/i2c/busses/i2c-xgene-slimpro.c +++ b/drivers/i2c/busses/i2c-xgene-slimpro.c @@ -105,7 +105,7 @@ struct slimpro_i2c_dev { struct mbox_chan *mbox_chan; struct mbox_client mbox_client; struct completion rd_complete; - u8 dma_buffer[I2C_SMBUS_BLOCK_MAX]; + u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */ u32 *resp_msg; }; -- 1.9.1
|  |