mvebu: fix NAND flash issues (FS#67)

Remove the previous PIO delay patch and add a revert patch for a faulty
upstream commit, which seems to have introduced this issue in the first
place

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 36 deletions

diff --git a/target/linux/mvebu/patches-4.4/110-pxa3xxx_nand-handle-PIO-delays.patch b/target/linux/mvebu/patches-4.4/110-pxa3xxx_nand-handle-PIO-delays.patch
deleted file mode 100644
index 7fa56970c1..0000000000
--- a/target/linux/mvebu/patches-4.4/110-pxa3xxx_nand-handle-PIO-delays.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-Handle delays/excessive latency during flash command processing with PIO.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-
---- a/drivers/mtd/nand/pxa3xx_nand.c
-+++ b/drivers/mtd/nand/pxa3xx_nand.c
-@@ -227,6 +227,7 @@ struct pxa3xx_nand_info {
- 	int			use_dma;	/* use DMA ? */
- 	int			use_spare;	/* use spare ? */
- 	int			need_wait;
-+	int			pio_progress;
- 
- 	/* Amount of real data per full chunk */
- 	unsigned int		chunk_size;
-@@ -769,6 +770,7 @@ static irqreturn_t pxa3xx_nand_irq_threa
- {
- 	struct pxa3xx_nand_info *info = data;
- 
-+	info->pio_progress = 1;
- 	handle_data_pio(info);
- 
- 	info->state = STATE_CMD_DONE;
-@@ -1175,8 +1177,13 @@ static void nand_cmdfunc(struct mtd_info
- 		info->need_wait = 1;
- 		pxa3xx_nand_start(info);
- 
-+retry:
-+		info->pio_progress = 0;
- 		if (!wait_for_completion_timeout(&info->cmd_complete,
- 		    CHIP_DELAY_TIMEOUT)) {
-+			if (info->pio_progress)
-+			    goto retry;
-+
- 			dev_err(&info->pdev->dev, "Wait time out!!!\n");
- 			/* Stop State Machine for next command cycle */
- 			pxa3xx_nand_stop(info);