From a343ba87ea0320ca0a4ecfa2c42cd9d4f18883df Mon Sep 17 00:00:00 2001 From: Graf Yang Date: Sat, 4 Apr 2009 07:45:57 -0400 Subject: [PATCH] Blackfin: nand: flush peripheral before polling it 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 Signed-off-by: Mike Frysinger Acked-by: Scott Wood --- drivers/mtd/nand/bfin_nand.c | 1 + 1 file changed, 1 insertion(+) 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())