[PATCH] mtd: nand: pxa3xx: fix raw read when last_chunk_size == 0

Commit 6293b0361d9 ("mtd: nand: pxa3xx: add raw read support") added the local data_len variable in handle_data_pio() to track read size, but forgot to update the condition of drain_fifo() call. That happens to work when the layout last_chunk_size != 0. But when last_chunk_size == 0, drain_fifo() is not called to read the last chunk, which leads to "Wait timeout!!!" error. Fix this.
Fixes: 6293b0361d9 ("mtd: nand: pxa3xx: add raw read support") Cc: Miquel Raynal miquel.raynal@bootlin.com Signed-off-by: Baruch Siach baruch@tkos.co.il --- drivers/mtd/nand/raw/pxa3xx_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/pxa3xx_nand.c b/drivers/mtd/nand/raw/pxa3xx_nand.c index 03f210bdb0b3..7e3346dfcc2d 100644 --- a/drivers/mtd/nand/raw/pxa3xx_nand.c +++ b/drivers/mtd/nand/raw/pxa3xx_nand.c @@ -639,7 +639,7 @@ static void handle_data_pio(struct pxa3xx_nand_info *info) DIV_ROUND_UP(info->step_spare_size, 4)); break; case STATE_PIO_READING: - if (info->step_chunk_size) + if (data_len) drain_fifo(info, info->data_buff + info->data_buff_pos, DIV_ROUND_UP(data_len, 4));

On Sun, Apr 05, 2020 at 07:19:31PM +0300, Baruch Siach wrote:
Commit 6293b0361d9 ("mtd: nand: pxa3xx: add raw read support") added the local data_len variable in handle_data_pio() to track read size, but forgot to update the condition of drain_fifo() call. That happens to work when the layout last_chunk_size != 0. But when last_chunk_size == 0, drain_fifo() is not called to read the last chunk, which leads to "Wait timeout!!!" error. Fix this.
Fixes: 6293b0361d9 ("mtd: nand: pxa3xx: add raw read support") Cc: Miquel Raynal miquel.raynal@bootlin.com Signed-off-by: Baruch Siach baruch@tkos.co.il
Applied to u-boot/master, thanks!
participants (2)
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Baruch Siach
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Tom Rini