36 lines
1 KiB
Diff
36 lines
1 KiB
Diff
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);
|