Hi,
On Tuesday 05 March 2013 08:36 PM, Felipe Balbi wrote:
On Tue, Mar 05, 2013 at 08:31:58PM +0530, kishon wrote:
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 <kis...@ti.com>
---
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.
it does seem hacky :-) Try something like:
ret = dwc3_omap_mailbox();
if (ret)
print_error();
return IRQ_HANDLED;
hmm.. But there is one case where palmas_vbus_wakeup_irq should return
EPROBE_DEFER. In the cold plug case, if palmas gets loaded before
dwc3-omap, omap in dwc3_omap_mailbox will be NULL. So ideally palmas
should be probed after dwc3-omap for this case. Returning IRQ_HANDLED or
IRQ_NONE wont help here.
Thanks
Kishon
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