linux-kernel - [PATCH 1/3] mtd: onenand: samsung: Fix pointer cast -Wpointer-to-int-cast warnings on 64 bit

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Date:   Sun, 29 Dec 2019 19:36:10 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Kyungmin Park <kyungmin.park@...sung.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 1/3] mtd: onenand: samsung: Fix pointer cast -Wpointer-to-int-cast warnings on 64 bit

iomem pointers should be casted to unsigned long to avoid
-Wpointer-to-int-cast warnings when compiling on 64-bit platform (e.g.
with COMPILE_TEST):

    drivers/mtd/nand/onenand/samsung_mtd.c: In function ‘s3c_onenand_readw’:
    drivers/mtd/nand/onenand/samsung_mtd.c:251:6: warning:
        cast from pointer to integer of different size [-Wpointer-to-int-cast]
      if ((unsigned int) addr < ONENAND_DATARAM && onenand->bootram_command) {
          ^

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/mtd/nand/onenand/samsung_mtd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/onenand/samsung_mtd.c b/drivers/mtd/nand/onenand/samsung_mtd.c
index 55e5536a5850..70501d031db6 100644
--- a/drivers/mtd/nand/onenand/samsung_mtd.c
+++ b/drivers/mtd/nand/onenand/samsung_mtd.c
@@ -248,7 +248,7 @@ static unsigned short s3c_onenand_readw(void __iomem *addr)
 	}
 
 	/* BootRAM access control */
-	if ((unsigned int) addr < ONENAND_DATARAM && onenand->bootram_command) {
+	if ((unsigned long)addr < ONENAND_DATARAM && onenand->bootram_command) {
 		if (word_addr == 0)
 			return s3c_read_reg(MANUFACT_ID_OFFSET);
 		if (word_addr == 1)
@@ -289,7 +289,7 @@ static void s3c_onenand_writew(unsigned short value, void __iomem *addr)
 	}
 
 	/* BootRAM access control */
-	if ((unsigned int)addr < ONENAND_DATARAM) {
+	if ((unsigned long)addr < ONENAND_DATARAM) {
 		if (value == ONENAND_CMD_READID) {
 			onenand->bootram_command = 1;
 			return;
-- 
2.17.1