Commit bc418cd2 authored by Brian Norris's avatar Brian Norris

mtd: nxp-spifi: return amount of data transferred or error in read/write

Add checking of SPI transfer errors and return them from read/write
functions. Also return the amount of data transferred.
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent 78b400fd
......@@ -185,7 +185,7 @@ static ssize_t nxp_spifi_read(struct spi_nor *nor, loff_t from, size_t len,
memcpy_fromio(buf, spifi->flash_base + from, len);
*retlen += len;
return 0;
return len;
}
static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len,
......@@ -194,6 +194,7 @@ static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len,
struct nxp_spifi *spifi = nor->priv;
u32 cmd;
int ret;
size_t i;
ret = nxp_spifi_set_memory_mode_off(spifi);
if (ret)
......@@ -209,10 +210,14 @@ static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len,
SPIFI_CMD_FRAMEFORM(spifi->nor.addr_width + 1);
writel(cmd, spifi->io_base + SPIFI_CMD);
while (len--)
writeb(*buf++, spifi->io_base + SPIFI_DATA);
for (i = 0; i < len; i++)
writeb(buf[i], spifi->io_base + SPIFI_DATA);
return nxp_spifi_wait_for_cmd(spifi);
ret = nxp_spifi_wait_for_cmd(spifi);
if (ret)
return ret;
return len;
}
static int nxp_spifi_erase(struct spi_nor *nor, loff_t offs)
......
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