usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
Use platform_device_register_full() for those drivers which can, to
avoid messing directly with DMA masks. This can only be done when
the driver does not need to access the allocated musb platform device
from within its callbacks, which may be called during the musb
device probing.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index b3b3ed7..4432314 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -1152,7 +1152,11 @@
.set_vbus = tusb_musb_set_vbus,
};
-static u64 tusb_dmamask = DMA_BIT_MASK(32);
+static const struct platform_device_info tusb_dev_info = {
+ .name = "musb-hdrc",
+ .id = PLATFORM_DEVID_AUTO,
+ .dma_mask = DMA_BIT_MASK(32),
+};
static int tusb_probe(struct platform_device *pdev)
{
@@ -1160,7 +1164,7 @@
struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct platform_device *musb;
struct tusb6010_glue *glue;
-
+ struct platform_device_info pinfo;
int ret = -ENOMEM;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
@@ -1169,18 +1173,7 @@
goto err0;
}
- musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err1;
- }
-
- musb->dev.parent = &pdev->dev;
- musb->dev.dma_mask = &tusb_dmamask;
- musb->dev.coherent_dma_mask = tusb_dmamask;
-
glue->dev = &pdev->dev;
- glue->musb = musb;
pdata->platform_ops = &tusb_ops;
@@ -1204,31 +1197,23 @@
musb_resources[2].end = pdev->resource[2].end;
musb_resources[2].flags = pdev->resource[2].flags;
- ret = platform_device_add_resources(musb, musb_resources,
- ARRAY_SIZE(musb_resources));
- if (ret) {
- dev_err(&pdev->dev, "failed to add resources\n");
- goto err3;
- }
+ pinfo = tusb_dev_info;
+ pinfo.parent = &pdev->dev;
+ pinfo.res = musb_resources;
+ pinfo.num_res = ARRAY_SIZE(musb_resources);
+ pinfo.data = pdata;
+ pinfo.size_data = sizeof(*pdata);
- ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
- if (ret) {
- dev_err(&pdev->dev, "failed to add platform_data\n");
- goto err3;
- }
-
- ret = platform_device_add(musb);
- if (ret) {
- dev_err(&pdev->dev, "failed to register musb device\n");
+ glue->musb = musb = platform_device_register_full(&pinfo);
+ if (IS_ERR(musb)) {
+ ret = PTR_ERR(musb);
+ dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
goto err3;
}
return 0;
err3:
- platform_device_put(musb);
-
-err1:
kfree(glue);
err0: