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 <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Scott Wood <scottwood@freescale.com>
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@ -98,6 +98,7 @@ static void bfin_nfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
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/* Contents do not matter */
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bfin_write_NFC_DATA_RD(0x0000);
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SSYNC();
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while (!(bfin_read_NFC_IRQSTAT() & RD_RDY))
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if (ctrlc())
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