mtd: OneNAND: Fix loop hang when DMA error at Samsung SoCs

When DMA error occurs. it's loop hang since it can't exit the loop.
and it's the right DMA handling code as Spec.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Kyungmin Park 2010-08-27 11:55:37 +09:00 коммит произвёл David Woodhouse
Родитель 9aba97ad00
Коммит 53d1e137d5
1 изменённых файлов: 5 добавлений и 6 удалений

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@ -554,14 +554,13 @@ static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction)
do {
status = readl(base + S5PC110_DMA_TRANS_STATUS);
if (status & S5PC110_DMA_TRANS_STATUS_TE) {
writel(S5PC110_DMA_TRANS_CMD_TEC,
base + S5PC110_DMA_TRANS_CMD);
return -EIO;
}
} while (!(status & S5PC110_DMA_TRANS_STATUS_TD));
if (status & S5PC110_DMA_TRANS_STATUS_TE) {
writel(S5PC110_DMA_TRANS_CMD_TEC, base + S5PC110_DMA_TRANS_CMD);
writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD);
return -EIO;
}
writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD);
return 0;