From: Graf Yang graf.yang@analog.com
We need to make sure the data written to the nand flash controller makes it there before we start polling its status register. Otherwise, we may get stale data and return before the controller is actually ready.
Signed-off-by: Graf Yang graf.yang@analog.com Signed-off-by: Mike Frysinger vapier@gentoo.org --- drivers/mtd/nand/bfin_nand.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/nand/bfin_nand.c b/drivers/mtd/nand/bfin_nand.c index f6a0835..f134ef1 100644 --- a/drivers/mtd/nand/bfin_nand.c +++ b/drivers/mtd/nand/bfin_nand.c @@ -98,6 +98,7 @@ static void bfin_nfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
/* Contents do not matter */ bfin_write_NFC_DATA_RD(0x0000); + SSYNC();
while (!(bfin_read_NFC_IRQSTAT() & RD_RDY)) if (ctrlc())