diff options
Diffstat (limited to 'drivers/net/can/flexcan.c')
| -rw-r--r-- | drivers/net/can/flexcan.c | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index e02337953f4..96d235799ec 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -118,6 +118,9 @@ (FLEXCAN_ESR_TWRN_INT | FLEXCAN_ESR_RWRN_INT | FLEXCAN_ESR_BOFF_INT) #define FLEXCAN_ESR_ERR_ALL \ (FLEXCAN_ESR_ERR_BUS | FLEXCAN_ESR_ERR_STATE) +#define FLEXCAN_ESR_ALL_INT \ + (FLEXCAN_ESR_TWRN_INT | FLEXCAN_ESR_RWRN_INT | \ + FLEXCAN_ESR_BOFF_INT | FLEXCAN_ESR_ERR_INT) /* FLEXCAN interrupt flag register (IFLAG) bits */ #define FLEXCAN_TX_BUF_ID 8 @@ -577,7 +580,9 @@ static irqreturn_t flexcan_irq(int irq, void *dev_id) reg_iflag1 = flexcan_read(®s->iflag1); reg_esr = flexcan_read(®s->esr); - flexcan_write(FLEXCAN_ESR_ERR_INT, ®s->esr); /* ACK err IRQ */ + /* ACK all bus error and state change IRQ sources */ + if (reg_esr & FLEXCAN_ESR_ALL_INT) + flexcan_write(reg_esr & FLEXCAN_ESR_ALL_INT, ®s->esr); /* * schedule NAPI in case of: @@ -802,7 +807,7 @@ static int flexcan_open(struct net_device *dev) struct flexcan_priv *priv = netdev_priv(dev); int err; - clk_enable(priv->clk); + clk_prepare_enable(priv->clk); err = open_candev(dev); if (err) @@ -824,7 +829,7 @@ static int flexcan_open(struct net_device *dev) out_close: close_candev(dev); out: - clk_disable(priv->clk); + clk_disable_unprepare(priv->clk); return err; } @@ -838,7 +843,7 @@ static int flexcan_close(struct net_device *dev) flexcan_chip_stop(dev); free_irq(dev->irq, dev); - clk_disable(priv->clk); + clk_disable_unprepare(priv->clk); close_candev(dev); @@ -877,7 +882,7 @@ static int __devinit register_flexcandev(struct net_device *dev) struct flexcan_regs __iomem *regs = priv->base; u32 reg, err; - clk_enable(priv->clk); + clk_prepare_enable(priv->clk); /* select "bus clock", chip must be disabled */ flexcan_chip_disable(priv); @@ -911,7 +916,7 @@ static int __devinit register_flexcandev(struct net_device *dev) out: /* disable core and turn off clocks */ flexcan_chip_disable(priv); - clk_disable(priv->clk); + clk_disable_unprepare(priv->clk); return err; } @@ -1060,20 +1065,7 @@ static struct platform_driver flexcan_driver = { .remove = __devexit_p(flexcan_remove), }; -static int __init flexcan_init(void) -{ - pr_info("%s netdevice driver\n", DRV_NAME); - return platform_driver_register(&flexcan_driver); -} - -static void __exit flexcan_exit(void) -{ - platform_driver_unregister(&flexcan_driver); - pr_info("%s: driver removed\n", DRV_NAME); -} - -module_init(flexcan_init); -module_exit(flexcan_exit); +module_platform_driver(flexcan_driver); MODULE_AUTHOR("Sascha Hauer <kernel@pengutronix.de>, " "Marc Kleine-Budde <kernel@pengutronix.de>"); |