linux-kernel - [PATCH v4 05/11] mtd: spi-nor: manufacturers: Use spi_nor_read

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220420103427.47867-6-tudor.ambarus@microchip.com>
Date:   Wed, 20 Apr 2022 13:34:21 +0300
From:   Tudor Ambarus <tudor.ambarus@...rochip.com>
To:     <p.yadav@...com>, <michael@...le.cc>
CC:     <miquel.raynal@...tlin.com>, <richard@....at>, <vigneshr@...com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <Takahiro.Kuwano@...ineon.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>
Subject: [PATCH v4 05/11] mtd: spi-nor: manufacturers: Use spi_nor_read_id() core method

Use spi_nor_read_id() core method to avoid duplication of code. Now the ID
is read on the full SPI_NOR_MAX_ID_LEN instead of
round_up(nor->info->id_len, 2), but it doesn't harm to read more ID bytes,
so the change comes with no secondary effects. dev_dbg messages in case
spi_nor_read_id() fails, will be added in a further patch after we split
the octal DTR enable/disable methods.

Signed-off-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
Reviewed-by: Pratyush Yadav <p.yadav@...com>
Reviewed-by: Michael Walle <michael@...le.cc>
---
 drivers/mtd/spi-nor/micron-st.c | 13 +++----------
 drivers/mtd/spi-nor/spansion.c  | 13 +++----------
 2 files changed, 6 insertions(+), 20 deletions(-)

diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 8a20475ce77a..41b87868ecf9 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -91,17 +91,10 @@ static int micron_st_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
 		return ret;
 
 	/* Read flash ID to make sure the switch was successful. */
-	op = (struct spi_mem_op)
-		SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 1),
-			   SPI_MEM_OP_NO_ADDR,
-			   SPI_MEM_OP_DUMMY(enable ? 8 : 0, 1),
-			   SPI_MEM_OP_DATA_IN(round_up(nor->info->id_len, 2),
-					      buf, 1));
-
 	if (enable)
-		spi_nor_spimem_setup_op(nor, &op, SNOR_PROTO_8_8_8_DTR);
-
-	ret = spi_mem_exec_op(nor->spimem, &op);
+		ret = spi_nor_read_id(nor, 0, 8, buf, SNOR_PROTO_8_8_8_DTR);
+	else
+		ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1);
 	if (ret)
 		return ret;
 
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index f24e546e04a5..c5988312cc91 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -98,17 +98,10 @@ static int cypress_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
 		return ret;
 
 	/* Read flash ID to make sure the switch was successful. */
-	op = (struct spi_mem_op)
-		SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 1),
-			   SPI_MEM_OP_ADDR(enable ? 4 : 0, 0, 1),
-			   SPI_MEM_OP_DUMMY(enable ? 3 : 0, 1),
-			   SPI_MEM_OP_DATA_IN(round_up(nor->info->id_len, 2),
-					      buf, 1));
-
 	if (enable)
-		spi_nor_spimem_setup_op(nor, &op, SNOR_PROTO_8_8_8_DTR);
-
-	ret = spi_mem_exec_op(nor->spimem, &op);
+		ret = spi_nor_read_id(nor, 4, 3, buf, SNOR_PROTO_8_8_8_DTR);
+	else
+		ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1);
 	if (ret)
 		return ret;
 
-- 
2.25.1