diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2013-06-19 19:38:11 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-07-29 14:53:18 +0400 |
| commit | 66c01883ef19bf4537b16931567b7d35c65356ad (patch) | |
| tree | 99da616e10bf13181dad379d97748980784c74e6 /drivers/usb/musb/ux500_dma.c | |
| parent | ff2283229da616d9a029eaa0d483fa8b0ad55e77 (diff) | |
| download | linux-66c01883ef19bf4537b16931567b7d35c65356ad.tar.xz | |
usb: musb: dma: merge ->start/stop into create/destroy
The core code creates a controller and immediately after that it calls
the ->start() callback. This one might drop an error but nobody cares.
The same thing happens in the destroy corner: First ->stop() called
followed by destroy callback. So why not merge those two into the same
function since there is no difference.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/ux500_dma.c')
| -rw-r--r-- | drivers/usb/musb/ux500_dma.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index bfb7a65d83cc..1ce214e5b7ad 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -254,10 +254,8 @@ static int ux500_dma_channel_abort(struct dma_channel *channel) return 0; } -static int ux500_dma_controller_stop(struct dma_controller *c) +static void ux500_dma_controller_stop(struct ux500_dma_controller *controller) { - struct ux500_dma_controller *controller = container_of(c, - struct ux500_dma_controller, controller); struct ux500_dma_channel *ux500_channel; struct dma_channel *channel; u8 ch_num; @@ -281,14 +279,10 @@ static int ux500_dma_controller_stop(struct dma_controller *c) if (ux500_channel->dma_chan) dma_release_channel(ux500_channel->dma_chan); } - - return 0; } -static int ux500_dma_controller_start(struct dma_controller *c) +static int ux500_dma_controller_start(struct ux500_dma_controller *controller) { - struct ux500_dma_controller *controller = container_of(c, - struct ux500_dma_controller, controller); struct ux500_dma_channel *ux500_channel = NULL; struct musb *musb = controller->private_data; struct device *dev = musb->controller; @@ -347,7 +341,7 @@ static int ux500_dma_controller_start(struct dma_controller *c) dir, ch_num); /* Release already allocated channels */ - ux500_dma_controller_stop(c); + ux500_dma_controller_stop(controller); return -EBUSY; } @@ -369,6 +363,7 @@ void dma_controller_destroy(struct dma_controller *c) struct ux500_dma_controller *controller = container_of(c, struct ux500_dma_controller, controller); + ux500_dma_controller_stop(controller); kfree(controller); } @@ -378,6 +373,7 @@ struct dma_controller *dma_controller_create(struct musb *musb, struct ux500_dma_controller *controller; struct platform_device *pdev = to_platform_device(musb->controller); struct resource *iomem; + int ret; controller = kzalloc(sizeof(*controller), GFP_KERNEL); if (!controller) @@ -394,14 +390,15 @@ struct dma_controller *dma_controller_create(struct musb *musb, controller->phy_base = (dma_addr_t) iomem->start; - controller->controller.start = ux500_dma_controller_start; - controller->controller.stop = ux500_dma_controller_stop; controller->controller.channel_alloc = ux500_dma_channel_allocate; controller->controller.channel_release = ux500_dma_channel_release; controller->controller.channel_program = ux500_dma_channel_program; controller->controller.channel_abort = ux500_dma_channel_abort; controller->controller.is_compatible = ux500_dma_is_compatible; + ret = ux500_dma_controller_start(controller); + if (ret) + goto plat_get_fail; return &controller->controller; plat_get_fail: |