On 04/05/2016 08:51 AM, Felipe Balbi wrote:
> Grygorii Strashko <[email protected]> writes:
>> On 04/02/2016 11:28 AM, Felipe Balbi wrote:
>>> Instead of having a static global just for
>>> initializing dma_mask directly, let's use
>>> dma_coerce_mask_and_coherent() for that.
>>>
>>> Signed-off-by: Felipe Balbi <[email protected]>
>>> ---
>>> drivers/usb/dwc3/dwc3-omap.c | 4 +---
>>> 1 file changed, 1 insertion(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
>>> index 22e9606d8e08..c219118bfda0 100644
>>> --- a/drivers/usb/dwc3/dwc3-omap.c
>>> +++ b/drivers/usb/dwc3/dwc3-omap.c
>>> @@ -331,8 +331,6 @@ static void dwc3_omap_disable_irqs(struct dwc3_omap
>>> *omap)
>>> dwc3_omap_write_irqmisc_clr(omap, reg);
>>> }
>>>
>>> -static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32);
>>> -
>>> static int dwc3_omap_id_notifier(struct notifier_block *nb,
>>> unsigned long event, void *ptr)
>>> {
>>> @@ -490,7 +488,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
>>> omap->irq = irq;
>>> omap->base = base;
>>> omap->vbus_reg = vbus_reg;
>>> - dev->dma_mask = &dwc3_omap_dma_mask;
>>> + dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
>>
>> I think, It'll be better to just remove DMA configuration code
>> from this driver and other drivers which support DT-boot mode only.
>
> I don't have HW, can you test that on AM57x and/or AM437x ?
>
Yes. I can. With below change I see no issues with USB in Host mode
on my AM57x board:
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 16cb14f..d5feaf9 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -367,8 +367,6 @@ static void dwc3_omap_disable_irqs(struct dwc3_omap *omap)
dwc3_omap_write_irqmisc_clr(omap, reg);
}
-static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32);
-
static int dwc3_omap_id_notifier(struct notifier_block *nb,
unsigned long event, void *ptr)
{
@@ -526,7 +524,6 @@ static int dwc3_omap_probe(struct platform_device *pdev)
omap->irq = irq;
omap->base = base;
omap->vbus_reg = vbus_reg;
- dev->dma_mask = &dwc3_omap_dma_mask;
pm_runtime_enable(dev);
ret = pm_runtime_get_sync(dev);
--
regards,
-grygorii
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