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serial: sh-sci: Use min_t()/max_t() instead of casts

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When comparing differently sized types, it's better to use
min_t()/max_t() than adding casts.

Also use "unsigned int" instead of "int", as that's the right type for
the length of an SG entry.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2015-08-21 20:02:41 +02:00 committed by Greg Kroah-Hartman
parent 8e14ba8f8b
commit 092248aa32
1 changed files with 3 additions and 2 deletions
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5
drivers/tty/serial/sh-sci.c
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@ -1507,7 +1507,8 @@ static void work_fn_tx(struct work_struct *work)
sg->offset = xmit->tail & (UART_XMIT_SIZE - 1);
sg_dma_address(sg) = (sg_dma_address(sg) & ~(UART_XMIT_SIZE - 1)) +
sg->offset;
sg_dma_len(sg) = min((int)CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE),
sg_dma_len(sg) = min_t(unsigned int,
CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE),
CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE));
spin_unlock_irq(&port->lock);
@ -1737,7 +1738,7 @@ static void sci_request_dma(struct uart_port *port)
s->chan_rx = chan;
s->buf_len_rx = 2 * max(16, (int)port->fifosize);
s->buf_len_rx = 2 * max_t(size_t, 16, port->fifosize);
buf[0] = dma_alloc_coherent(chan->device->dev,
s->buf_len_rx * 2, &dma[0],
GFP_KERNEL);