diff options
| author |   Kishon Vijay Abraham I <kishon@ti.com> | 2013-03-07 18:51:44 +0530 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2013-03-18 11:18:14 +0200 |
| commit | 2ba7943af0f0cca5a069cd3aff807815bc76fff1 (patch) | |
| tree | 4991deda3224f2f73524a1e44f6443e1f8264f42 | |
| parent | usb: dwc3: set dma_mask for dwc3_omap device (diff) | |
| download | linux-dev-2ba7943af0f0cca5a069cd3aff807815bc76fff1.tar.xz linux-dev-2ba7943af0f0cca5a069cd3aff807815bc76fff1.zip | |
usb: dwc3: dwc3-omap: return -EPROBE_DEFER if probe has not yet executed
return -EPROBE_DEFER from dwc3_omap_mailbox in dwc3-omap.c, if the probe of
dwc3-omap has not yet been executed or failed.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
| -rw-r--r-- | drivers/usb/dwc3/dwc3-omap.c | 7 | ||||
| -rw-r--r-- | include/linux/usb/dwc3-omap.h | 6 |
2 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 546f1fd84920..2fe9723ff1df 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -138,11 +138,14 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) writel(value, base + offset); } -void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) { u32 val; struct dwc3_omap *omap = _omap; + if (!omap) + return -EPROBE_DEFER; + switch (status) { case OMAP_DWC3_ID_GROUND: dev_dbg(omap->dev, "ID GND\n"); @@ -185,7 +188,7 @@ void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) dev_dbg(omap->dev, "ID float\n"); } - return; + return 0; } EXPORT_SYMBOL_GPL(dwc3_omap_mailbox); diff --git a/include/linux/usb/dwc3-omap.h b/include/linux/usb/dwc3-omap.h index 51eae14477f7..5615f4d82724 100644 --- a/include/linux/usb/dwc3-omap.h +++ b/include/linux/usb/dwc3-omap.h @@ -19,11 +19,11 @@ enum omap_dwc3_vbus_id_status { }; #if (defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_DWC3_MODULE)) -extern void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status); +extern int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status); #else -static inline void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +static inline int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) { - return; + return -ENODEV; } #endif |