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net: macb: Fix runtime PM refcounting

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The commit e6a41c23df, while trying to fix an issue,

    ("net: macb: ensure interface is not suspended on at91rm9200")

introduced a refcounting regression, because in error case refcounter
must be balanced. Fix it by calling pm_runtime_put_noidle() in error case.

While here, fix the same mistake in other couple of places.

Fixes: e6a41c23df ("net: macb: ensure interface is not suspended on at91rm9200")
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Shevchenko 2020-04-27 13:51:20 +03:00 • committed by David S. Miller
parent ee8d2267f0
commit 0ce205d466
1 changed files with 9 additions and 3 deletions
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12
drivers/net/ethernet/cadence/macb_main.c
View file

@ -334,8 +334,10 @@ static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
int status;
status = pm_runtime_get_sync(&bp->pdev->dev);
if (status < 0)
if (status < 0) {
pm_runtime_put_noidle(&bp->pdev->dev);
goto mdio_pm_exit;
}
status = macb_mdio_wait_for_idle(bp);
if (status < 0)
@ -386,8 +388,10 @@ static int macb_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
int status;
status = pm_runtime_get_sync(&bp->pdev->dev);
if (status < 0)
if (status < 0) {
pm_runtime_put_noidle(&bp->pdev->dev);
goto mdio_pm_exit;
}
status = macb_mdio_wait_for_idle(bp);
if (status < 0)
@ -3816,8 +3820,10 @@ static int at91ether_open(struct net_device *dev)
int ret;
ret = pm_runtime_get_sync(&lp->pdev->dev);
if (ret < 0)
if (ret < 0) {
pm_runtime_put_noidle(&lp->pdev->dev);
return ret;
}
/* Clear internal statistics */
ctl = macb_readl(lp, NCR);