| From | Ben Hutchings <> | Date | Sat, 01 Nov 2014 22:28:03 +0000 | Subject | [PATCH 3.2 065/102] can: at91_can: add missing prepare and unprepare of the clock |
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3.2.64-rc1 review patch. If anyone has any objections, please let me know.
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From: David Dueck <davidcdueck@googlemail.com>
commit e77980e50bc2850599d4d9c0192b67a9ffd6daac upstream.
In order to make the driver work with the common clock framework, this patch converts the clk_enable()/clk_disable() to clk_prepare_enable()/clk_disable_unprepare(). While there, add the missing error handling.
Signed-off-by: David Dueck <davidcdueck@googlemail.com> Signed-off-by: Anthony Harivel <anthony.harivel@emtrion.de> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/net/can/at91_can.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -1115,7 +1115,9 @@ static int at91_open(struct net_device * struct at91_priv *priv = netdev_priv(dev); int err; - clk_enable(priv->clk); + err = clk_prepare_enable(priv->clk); + if (err) + return err; /* check or determine and set bittime */ err = open_candev(dev); @@ -1139,7 +1141,7 @@ static int at91_open(struct net_device * out_close: close_candev(dev); out: - clk_disable(priv->clk); + clk_disable_unprepare(priv->clk); return err; } @@ -1156,7 +1158,7 @@ static int at91_close(struct net_device at91_chip_stop(dev, CAN_STATE_STOPPED); free_irq(dev->irq, dev); - clk_disable(priv->clk); + clk_disable_unprepare(priv->clk); close_candev(dev);
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