diff options
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/pxa3xx_nand.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index a4615fcc3d00..6798fae625e2 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -22,6 +22,7 @@ #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> #include <linux/io.h> +#include <linux/iopoll.h> #include <linux/irq.h> #include <linux/slab.h> #include <linux/of.h> @@ -483,7 +484,8 @@ static void disable_int(struct pxa3xx_nand_info *info, uint32_t int_mask) static void drain_fifo(struct pxa3xx_nand_info *info, void *data, int len) { if (info->ecc_bch) { - int timeout; + u32 val; + int ret; /* * According to the datasheet, when reading from NDDB @@ -496,16 +498,12 @@ static void drain_fifo(struct pxa3xx_nand_info *info, void *data, int len) while (len > 8) { __raw_readsl(info->mmio_base + NDDB, data, 8); - for (timeout = 0; - !(nand_readl(info, NDSR) & NDSR_RDDREQ); - timeout++) { - if (timeout >= 5) { - dev_err(&info->pdev->dev, - "Timeout on RDDREQ while draining the FIFO\n"); - return; - } - - mdelay(1); + ret = readl_relaxed_poll_timeout(info->mmio_base + NDSR, val, + val & NDSR_RDDREQ, 1000, 5000); + if (ret) { + dev_err(&info->pdev->dev, + "Timeout on RDDREQ while draining the FIFO\n"); + return; } data += 32; |