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staging: et131x: stop read when hit max delay in et131x_phy_mii_read

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stop read and return error when hit max delay time.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Acked-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhao, Gang 2014-02-06 00:10:34 +08:00 • committed by Greg Kroah-Hartman
parent ba92b22515
commit a863a15bf2
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/et131x/et131x.c
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@ -1388,6 +1388,7 @@ static int et131x_phy_mii_read(struct et131x_adapter *adapter, u8 addr,
mii_indicator); mii_indicator);
status = -EIO; status = -EIO;
goto out;
} }
/* If we hit here we were able to read the register and we need to /* If we hit here we were able to read the register and we need to
@ -1395,6 +1396,7 @@ static int et131x_phy_mii_read(struct et131x_adapter *adapter, u8 addr,
*/ */
*value = readl(&mac->mii_mgmt_stat) & ET_MAC_MIIMGMT_STAT_PHYCRTL_MASK; *value = readl(&mac->mii_mgmt_stat) & ET_MAC_MIIMGMT_STAT_PHYCRTL_MASK;
out:
/* Stop the read operation */ /* Stop the read operation */
writel(0, &mac->mii_mgmt_cmd); writel(0, &mac->mii_mgmt_cmd);