diff options
| author |   Marc Kleine-Budde <mkl@pengutronix.de> | 2014-02-28 17:18:27 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-03-03 12:41:39 +0100 |
| commit | f003698e23f6f56a791774f14d0ac35d04872490 (patch) | |
| tree | fd6af2b168c5275e05977bbfd4aae5ce051809c5 /drivers/net/can | |
| parent | can: flexcan: fix transition from and to low power mode in chip_{en,dis}able (diff) | |
| download | linux-dev-f003698e23f6f56a791774f14d0ac35d04872490.tar.xz linux-dev-f003698e23f6f56a791774f14d0ac35d04872490.zip | |
can: flexcan: factor out transceiver {en,dis}able into seperate functions
This patch moves the transceiver enable and disable into seperate functions,
where the NULL pointer check is hidden.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/flexcan.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 5af60ab23e6f..6b0fecd0a6ad 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -264,6 +264,22 @@ static inline void flexcan_write(u32 val, void __iomem *addr) } #endif +static inline int flexcan_transceiver_enable(const struct flexcan_priv *priv) +{ + if (!priv->reg_xceiver) + return 0; + + return regulator_enable(priv->reg_xceiver); +} + +static inline int flexcan_transceiver_disable(const struct flexcan_priv *priv) +{ + if (!priv->reg_xceiver) + return 0; + + return regulator_disable(priv->reg_xceiver); +} + static inline int flexcan_has_and_handle_berr(const struct flexcan_priv *priv, u32 reg_esr) { @@ -808,11 +824,9 @@ static int flexcan_chip_start(struct net_device *dev) if (priv->devtype_data->features & FLEXCAN_HAS_V10_FEATURES) flexcan_write(0x0, ®s->rxfgmask); - if (priv->reg_xceiver) { - err = regulator_enable(priv->reg_xceiver); - if (err) - goto out; - } + err = flexcan_transceiver_enable(priv); + if (err) + goto out; /* synchronize with the can bus */ reg_mcr = flexcan_read(®s->mcr); @@ -857,8 +871,7 @@ static void flexcan_chip_stop(struct net_device *dev) flexcan_write(priv->reg_ctrl_default & ~FLEXCAN_CTRL_ERR_ALL, ®s->ctrl); - if (priv->reg_xceiver) - regulator_disable(priv->reg_xceiver); + flexcan_transceiver_disable(priv); priv->can.state = CAN_STATE_STOPPED; return; |