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| author | Gabor Juhos <juhosg@openwrt.org> | 2012-03-07 16:32:45 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2012-03-07 16:32:45 +0000 |
| commit | 0097cf716163e9548d86afe073fb996d51823d68 (patch) | |
| tree | bb45c3e8b546bdf28fbdd9dcdbcb861eef7d983a /target/linux/generic/files/drivers/net/phy | |
| parent | 2370828599ea3b5d990082d8b439c1fdba97cc9a (diff) | |
| download | mtk-20170518-0097cf716163e9548d86afe073fb996d51823d68.zip mtk-20170518-0097cf716163e9548d86afe073fb996d51823d68.tar.gz mtk-20170518-0097cf716163e9548d86afe073fb996d51823d68.tar.bz2 | |
generic: ar8216: improve ar8216_wait_bit function
SVN-Revision: 30847
Diffstat (limited to 'target/linux/generic/files/drivers/net/phy')
| -rw-r--r-- | target/linux/generic/files/drivers/net/phy/ar8216.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index 2e3a842..26a79be 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -468,14 +468,22 @@ static int ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val) { int timeout = 20; + u32 t = 0; - while ((priv->read(priv, reg) & mask) != val) { - if (timeout-- <= 0) { - printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n"); - return 1; - } + while (1) { + t = priv->read(priv, reg); + if ((t & mask) == val) + return 0; + + if (timeout-- <= 0) + break; + + udelay(10); } - return 0; + + pr_err("ar8216: timeout on reg %08x: %08x & %08x != %08x\n", + (unsigned int) reg, t, mask, val); + return -ETIMEDOUT; } static void @@ -958,11 +966,8 @@ ar8216_read_status(struct phy_device *phydev) /* flush the address translation unit */ mutex_lock(&priv->reg_mutex); ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0); - if (!ret) priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH); - else - ret = -ETIMEDOUT; mutex_unlock(&priv->reg_mutex); phydev->state = PHY_RUNNING; |