linux-kernel - [PATCH] staging: rts5208: Convert kmap() to kmap_local

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Message-Id: <20220328112440.17756-1-fmdefrancesco@gmail.com>
Date:   Mon, 28 Mar 2022 13:24:40 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Benjamin Philip <benjamin.philip495@...il.com>,
        Bart Van Assche <bvanassche@....org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Charlie Sands <sandsch@...thvilleschools.net>,
        Mitali Borkar <mitaliborkar810@...il.com>,
        Colin Ian King <colin.king@...el.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        ira.weiny@...el.com
Cc:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH] staging: rts5208: Convert kmap() to kmap_local_page()

The use of kmap() is being deprecated and kmap_local_page() is faster.
Use kmap_local_page() in place of kmap().

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---
 drivers/staging/rts5208/rtsx_transport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_transport.c b/drivers/staging/rts5208/rtsx_transport.c
index 805dc18fac0a..de690d7ee5e3 100644
--- a/drivers/staging/rts5208/rtsx_transport.c
+++ b/drivers/staging/rts5208/rtsx_transport.c
@@ -92,13 +92,13 @@ unsigned int rtsx_stor_access_xfer_buf(unsigned char *buffer,
 			while (sglen > 0) {
 				unsigned int plen = min(sglen, (unsigned int)
 						PAGE_SIZE - poff);
-				unsigned char *ptr = kmap(page);
+				unsigned char *ptr = kmap_local_page(page);
 
 				if (dir == TO_XFER_BUF)
 					memcpy(ptr + poff, buffer + cnt, plen);
 				else
 					memcpy(buffer + cnt, ptr + poff, plen);
-				kunmap(page);
+				kunmap_local(ptr);
 
 				/* Start at the beginning of the next page */
 				poff = 0;
-- 
2.34.1