linux-kernel - [PATCH v2] mtd: cadence: Fix cast to pointer from integer of different size warning

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Message-Id: <20191218095715.25585-1-gomonovych@gmail.com>
Date:   Wed, 18 Dec 2019 11:57:15 +0200
From:   Vasyl Gomonovych <gomonovych@...il.com>
To:     piotrs@...ence.com, miquel.raynal@...tlin.com, richard@....at,
        vigneshr@...com
Cc:     Vasyl Gomonovych <gomonovych@...il.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] mtd: cadence: Fix cast to pointer from integer of different size warning

Use dma_addr_t type to pass memory address and control data in
DMA descriptor fields memory_pointer and ctrl_data_ptr
To fix warning: cast to pointer from integer of different size

Signed-off-by: Vasyl Gomonovych <gomonovych@...il.com>
---

Changes since v1:
 * Remove type casting (void *)(uintptr_t)dma_buf
 * Change type of function parameters
 
 drivers/mtd/nand/raw/cadence-nand-controller.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/nand/raw/cadence-nand-controller.c b/drivers/mtd/nand/raw/cadence-nand-controller.c
index 3a36285a8d8a..f6c7102a1e32 100644
--- a/drivers/mtd/nand/raw/cadence-nand-controller.c
+++ b/drivers/mtd/nand/raw/cadence-nand-controller.c
@@ -914,8 +914,8 @@ static void cadence_nand_get_caps(struct cdns_nand_ctrl *cdns_ctrl)
 /* Prepare CDMA descriptor. */
 static void
 cadence_nand_cdma_desc_prepare(struct cdns_nand_ctrl *cdns_ctrl,
-			       char nf_mem, u32 flash_ptr, char *mem_ptr,
-			       char *ctrl_data_ptr, u16 ctype)
+			       char nf_mem, u32 flash_ptr, dma_addr_t mem_ptr,
+				   dma_addr_t ctrl_data_ptr, u16 ctype)
 {
 	struct cadence_nand_cdma_desc *cdma_desc = cdns_ctrl->cdma_desc;
 
@@ -931,13 +931,13 @@ cadence_nand_cdma_desc_prepare(struct cdns_nand_ctrl *cdns_ctrl,
 	cdma_desc->command_flags |= CDMA_CF_DMA_MASTER;
 	cdma_desc->command_flags  |= CDMA_CF_INT;
 
-	cdma_desc->memory_pointer = (uintptr_t)mem_ptr;
+	cdma_desc->memory_pointer = mem_ptr;
 	cdma_desc->status = 0;
 	cdma_desc->sync_flag_pointer = 0;
 	cdma_desc->sync_arguments = 0;
 
 	cdma_desc->command_type = ctype;
-	cdma_desc->ctrl_data_ptr = (uintptr_t)ctrl_data_ptr;
+	cdma_desc->ctrl_data_ptr = ctrl_data_ptr;
 }
 
 static u8 cadence_nand_check_desc_error(struct cdns_nand_ctrl *cdns_ctrl,
@@ -1280,8 +1280,7 @@ cadence_nand_cdma_transfer(struct cdns_nand_ctrl *cdns_ctrl, u8 chip_nr,
 	}
 
 	cadence_nand_cdma_desc_prepare(cdns_ctrl, chip_nr, page,
-				       (void *)dma_buf, (void *)dma_ctrl_dat,
-				       ctype);
+				       dma_buf, dma_ctrl_dat, ctype);
 
 	status = cadence_nand_cdma_send_and_wait(cdns_ctrl, thread_nr);
 
@@ -1360,7 +1359,7 @@ static int cadence_nand_erase(struct nand_chip *chip, u32 page)
 
 	cadence_nand_cdma_desc_prepare(cdns_ctrl,
 				       cdns_chip->cs[chip->cur_cs],
-				       page, NULL, NULL,
+				       page, 0, 0,
 				       CDMA_CT_ERASE);
 	status = cadence_nand_cdma_send_and_wait(cdns_ctrl, thread_nr);
 	if (status) {
-- 
2.17.1