From: Quanyang Wang <quanyang.w...@windriver.com>
In spi_nor_spimem_xfer_data, it will limit the transfer size
according to nor->bouncebuf_size which is usually equal to
PAGE_SIZE. This means that sometimes a spi_nor_read operation
will be split into several spi_nor_read_data operations if
the transfer size is bigger than PAGE_SIZE .
Considering the case above, when is_ofst_odd is 0, we initialize
the "ptr" to be the "buf" and pass "ptr" as the argument to
spi_nor_read_data, the "ptr" should be updated as the "buf"
after spi_nor_read_data is called, or else the receive data
will be stored in the same place every time.
Signed-off-by: Quanyang Wang <quanyang.w...@windriver.com>
---
drivers/mtd/spi-nor/spi-nor.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 79f6a6f4445d..1df42dbc1197 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -3016,6 +3016,8 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t
from, size_t len,
*retlen += ret;
}
buf += ret;
+ if (!is_ofst_odd)
+ ptr += ret;
from += ret;
len -= ret;
}
--
2.17.1
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