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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-01-06 12:42:07 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-02-06 11:35:19 +0300 |
| commit | cad32741218299eee3f75de21ac9ccab8485bd62 (patch) | |
| tree | 3a3dae165a09485be7686cd88e10e9d0df7c0144 /drivers/mtd | |
| parent | 8de15e1feb232086d1d14e01a6a7648d10002c19 (diff) | |
| download | linux-cad32741218299eee3f75de21ac9ccab8485bd62.tar.xz | |
mtd: nand: sunxi: Improve sunxi_nfc_cmd_ctrl()
We only need to call sunxi_nfc_wait_cmd_fifo_empty() if we want to send
a new command. Move the sunxi_nfc_wait_cmd_fifo_empty() call to right
place to avoid extra register reads.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/sunxi_nand.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c index 76449f79d4c5..0eeeb8b889ea 100644 --- a/drivers/mtd/nand/sunxi_nand.c +++ b/drivers/mtd/nand/sunxi_nand.c @@ -604,10 +604,6 @@ static void sunxi_nfc_cmd_ctrl(struct mtd_info *mtd, int dat, struct sunxi_nfc *nfc = to_sunxi_nfc(sunxi_nand->nand.controller); int ret; - ret = sunxi_nfc_wait_cmd_fifo_empty(nfc); - if (ret) - return; - if (dat == NAND_CMD_NONE && (ctrl & NAND_NCE) && !(ctrl & (NAND_CLE | NAND_ALE))) { u32 cmd = 0; @@ -637,6 +633,10 @@ static void sunxi_nfc_cmd_ctrl(struct mtd_info *mtd, int dat, writel(sunxi_nand->addr[1], nfc->regs + NFC_REG_ADDR_HIGH); + ret = sunxi_nfc_wait_cmd_fifo_empty(nfc); + if (ret) + return; + writel(cmd, nfc->regs + NFC_REG_CMD); sunxi_nand->addr[0] = 0; sunxi_nand->addr[1] = 0; |