From: Miquel Raynal miquel.raynal@bootlin.com
commit 9a8f612ca0d6a436e6471c9bed516d34a2cc626f upstream.
Since the migration of the driver to stop using the legacy ->select_chip() hook, there is nothing deselecting the target anymore, thus the selection is not forced at the next access. Ensure the ND_RUN bit and the interrupts are always in a clean state.
Cc: Daniel Mack daniel@zonque.org Cc: stable@vger.kernel.org Fixes: b25251414f6e00 ("mtd: rawnand: marvell: Stop implementing ->select_chip()") Suggested-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Tested-by: Daniel Mack daniel@zonque.org Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Richard Weinberger richard@nod.at Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mtd/nand/raw/marvell_nand.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -722,12 +722,6 @@ static void marvell_nfc_select_target(st struct marvell_nfc *nfc = to_marvell_nfc(chip->controller); u32 ndcr_generic;
- if (chip == nfc->selected_chip && die_nr == marvell_nand->selected_die) - return; - - writel_relaxed(marvell_nand->ndtr0, nfc->regs + NDTR0); - writel_relaxed(marvell_nand->ndtr1, nfc->regs + NDTR1); - /* * Reset the NDCR register to a clean state for this particular chip, * also clear ND_RUN bit. @@ -739,6 +733,12 @@ static void marvell_nfc_select_target(st /* Also reset the interrupt status register */ marvell_nfc_clear_int(nfc, NDCR_ALL_INT);
+ if (chip == nfc->selected_chip && die_nr == marvell_nand->selected_die) + return; + + writel_relaxed(marvell_nand->ndtr0, nfc->regs + NDTR0); + writel_relaxed(marvell_nand->ndtr1, nfc->regs + NDTR1); + nfc->selected_chip = chip; marvell_nand->selected_die = die_nr; }