Re: [PATCH 2/4] usb: dwc3: dwc3-omap: return -EPROBE_DEFER if probe has not yet executed

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Hi,

On Tuesday 05 March 2013 08:26 PM, Felipe Balbi wrote:
On Tue, Mar 05, 2013 at 07:51:58PM +0530, Kishon Vijay Abraham I wrote:
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@xxxxxx>
---
  drivers/usb/dwc3/dwc3-omap.c  |    7 +++++--
  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 19c6e72..9428f4e 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 IRQ_HANDLED;

IRQ_HANDLED ????

Actually I did it that way since palmas_vbus_wakeup_irq can directly return the return value from dwc3_omap_mailbox. If this seems hacky to you, I'll change it.

Thanks
Kishon
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