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pch_uart: remove set but not used variable 'tx_empty'

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tx_empty is not used after setting its value. It is safe to remove
the unused variable.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Reviewed-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
zhong jiang 2018-10-23 21:21:34 +08:00 committed by Greg Kroah-Hartman
parent 7034ef87fa
commit 114c97cee6
1 changed files with 0 additions and 3 deletions
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3
drivers/tty/serial/pch_uart.c
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@ -933,7 +933,6 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
struct scatterlist *sg;
int nent;
int fifo_size;
int tx_empty;
struct dma_async_tx_descriptor *desc;
int num;
int i;
@ -958,11 +957,9 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
}
fifo_size = max(priv->fifo_size, 1);
tx_empty = 1;
if (pop_tx_x(priv, xmit->buf)) {
pch_uart_hal_write(priv, xmit->buf, 1);
port->icount.tx++;
tx_empty = 0;
fifo_size--;
}