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37 lines
1.0 KiB
37 lines
1.0 KiB
9 years ago
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Handle delays/excessive latency during flash command processing with PIO.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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--- a/drivers/mtd/nand/pxa3xx_nand.c
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+++ b/drivers/mtd/nand/pxa3xx_nand.c
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@@ -227,6 +227,7 @@ struct pxa3xx_nand_info {
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int use_dma; /* use DMA ? */
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int use_spare; /* use spare ? */
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int need_wait;
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+ int pio_progress;
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/* Amount of real data per full chunk */
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unsigned int chunk_size;
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@@ -769,6 +770,7 @@ static irqreturn_t pxa3xx_nand_irq_threa
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{
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struct pxa3xx_nand_info *info = data;
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+ info->pio_progress = 1;
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handle_data_pio(info);
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info->state = STATE_CMD_DONE;
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@@ -1175,8 +1177,13 @@ static void nand_cmdfunc(struct mtd_info
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info->need_wait = 1;
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pxa3xx_nand_start(info);
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+retry:
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+ info->pio_progress = 0;
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if (!wait_for_completion_timeout(&info->cmd_complete,
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CHIP_DELAY_TIMEOUT)) {
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+ if (info->pio_progress)
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+ goto retry;
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+
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dev_err(&info->pdev->dev, "Wait time out!!!\n");
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/* Stop State Machine for next command cycle */
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pxa3xx_nand_stop(info);
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