Commit 90179609 authored by Qianfeng Rong's avatar Qianfeng Rong Committed by Mark Brown
Browse files

spi: spl022: use min_t() to improve code 



Use min_t() to reduce the code in setup_dma_scatter() and improve its
readability.

Signed-off-by: default avatarQianfeng Rong <rongqianfeng@vivo.com>
Link: https://patch.msgid.link/20250815082118.586422-4-rongqianfeng@vivo.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1bdc7160

drivers/spi/spi-pl022.c

+5 −8
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include <linux/pm_runtime.h>

#include <linux/of.h>

#include <linux/pinctrl/consumer.h>

#include <linux/minmax.h>



/*

 * This macro is used to define some register default values.
@@ -760,10 +761,9 @@ static void setup_dma_scatter(struct pl022 *pl022, 
			 * we just feed in this, else we stuff in as much

			 * as we can.

			 */

			if (bytesleft < (PAGE_SIZE - offset_in_page(bufp)))

				mapbytes = bytesleft;

			else

				mapbytes = PAGE_SIZE - offset_in_page(bufp);

			mapbytes = min_t(int, bytesleft,

					 PAGE_SIZE - offset_in_page(bufp));



			sg_set_page(sg, virt_to_page(bufp),

				    mapbytes, offset_in_page(bufp));

			bufp += mapbytes;
@@ -775,10 +775,7 @@ static void setup_dma_scatter(struct pl022 *pl022, 
	} else {

		/* Map the dummy buffer on every page */

		for_each_sg(sgtab->sgl, sg, sgtab->nents, i) {

			if (bytesleft < PAGE_SIZE)

				mapbytes = bytesleft;

			else

				mapbytes = PAGE_SIZE;

			mapbytes = min_t(int, bytesleft, PAGE_SIZE);

			sg_set_page(sg, virt_to_page(pl022->dummypage),

				    mapbytes, 0);

			bytesleft -= mapbytes;