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mtd: rawnand: au1550nd: Fix au_read_buf16() prototype 

Commit 7e534323c4 ("mtd: rawnand: Pass a nand_chip object to
chip->read_xxx() hooks") modified the prototype of the struct nand_chip
read_buf function pointer. In the au1550nd driver we have 2
implementations of read_buf. The previously mentioned commit modified
the au_read_buf() implementation to match the function pointer, but not
au_read_buf16(). This results in a compiler warning for MIPS
db1xxx_defconfig builds:

  drivers/mtd/nand/raw/au1550nd.c:443:57:
    warning: pointer type mismatch in conditional expression

Fix this by updating the prototype of au_read_buf16() to take a struct
nand_chip pointer as its first argument, as is expected after commit
7e534323c4 ("mtd: rawnand: Pass a nand_chip object to chip->read_xxx()
hooks").

Note that this shouldn't have caused any functional issues at runtime,
since the offset of the struct mtd_info within struct nand_chip is 0
making mtd_to_nand() effectively a type-cast.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: 7e534323c4 ("mtd: rawnand: Pass a nand_chip object to chip->read_xxx() hooks")
Cc: stable@vger.kernel.org # v4.20+
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Paul Burton 2019-10-04 18:41:30 +00:00 committed by Miquel Raynal
parent 41e086e155
commit df8fed831c
1 changed files with 2 additions and 3 deletions
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5
drivers/mtd/nand/raw/au1550nd.c
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@ -134,16 +134,15 @@ static void au_write_buf16(struct nand_chip *this, const u_char *buf, int len)
/**
* au_read_buf16 - read chip data into buffer
* @mtd: MTD device structure
* @this: NAND chip object
* @buf: buffer to store date
* @len: number of bytes to read
*
* read function for 16bit buswidth
*/
static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
static void au_read_buf16(struct nand_chip *this, u_char *buf, int len)
{
int i;
struct nand_chip *this = mtd_to_nand(mtd);
u16 *p = (u16 *) buf;
len >>= 1;