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mtd: m25p80: Use SPI_MEM_OP_NO_DUMMY instead of SPI_MEM_OP_DUMMY(0, x) 

SPI_MEM_OP_DUMMY(0, x) means there's 0 dummy bytes to send, which is
similar to SPI_MEM_OP_NO_DUMMY except it's less clear. Use
SPI_MEM_OP_NO_DUMMY instead of SPI_MEM_OP_DUMMY(0, x) in
m25p80_write().
Also stop updating op.dummy.buswidth since this value is only
meaningful if you have dummy bytes.

Reported-by: Cyrille Pitchen <cyrille.pitchen@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
hifive-unleashed-5.1
Boris Brezillon 2018-06-01 12:03:25 +02:00
parent 00a5762b45
commit 9882b5375d
1 changed files with 1 additions and 2 deletions
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3
drivers/mtd/devices/m25p80.c
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@ -68,7 +68,7 @@ static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
struct spi_mem_op op =
SPI_MEM_OP(SPI_MEM_OP_CMD(nor->program_opcode, 1),
SPI_MEM_OP_ADDR(nor->addr_width, to, 1),
SPI_MEM_OP_DUMMY(0, 1),
SPI_MEM_OP_NO_DUMMY,
SPI_MEM_OP_DATA_OUT(len, buf, 1));
size_t remaining = len;
int ret;
@ -76,7 +76,6 @@ static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
/* get transfer protocols. */
op.cmd.buswidth = spi_nor_get_protocol_inst_nbits(nor->write_proto);
op.addr.buswidth = spi_nor_get_protocol_addr_nbits(nor->write_proto);
op.dummy.buswidth = op.addr.buswidth;
op.data.buswidth = spi_nor_get_protocol_data_nbits(nor->write_proto);
if (nor->program_opcode == SPINOR_OP_AAI_WP && nor->sst_write_second)