powerpc/ps3: Set driver coherent_dma_mask

Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.

Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.

Reported-by: Fredrik Noring <[e-mail]>
Signed-off-by: Geoff Levand <[e-mail]>
Acked-by: Greg Kroah-Hartman <[e-mail]>
Acked-by: Alan Stern <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>

drivers/usb/host/ehci-ps3.c

···
 	int result;
 	struct usb_hcd *hcd;
 	unsigned int virq;
-	static u64 dummy_mask = DMA_BIT_MASK(32);
+	static u64 dummy_mask;
 
 	if (usb_disabled()) {
 		result = -ENODEV;
···
 		goto fail_irq;
 	}
 
-	dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
+	dummy_mask = DMA_BIT_MASK(32);
+	dev->core.dma_mask = &dummy_mask;
+	dma_set_coherent_mask(&dev->core, dummy_mask);
 
 	hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core));
 

drivers/usb/host/ohci-ps3.c

···
 	int result;
 	struct usb_hcd *hcd;
 	unsigned int virq;
-	static u64 dummy_mask = DMA_BIT_MASK(32);
+	static u64 dummy_mask;
 
 	if (usb_disabled()) {
 		result = -ENODEV;
···
 		goto fail_irq;
 	}
 
-	dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
+	dummy_mask = DMA_BIT_MASK(32);
+	dev->core.dma_mask = &dummy_mask;
+	dma_set_coherent_mask(&dev->core, dummy_mask);
 
 	hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
 

sound/ppc/snd_ps3.c

···
 {
 	int i, ret;
 	u64 lpar_addr, lpar_size;
+	static u64 dummy_mask;
 
 	if (WARN_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1)))
 		return -ENODEV;
···
 		pr_info("%s: region_create\n", __func__);
 		goto clean_mmio;
 	}
+
+	dummy_mask = DMA_BIT_MASK(32);
+	dev->core.dma_mask = &dummy_mask;
+	dma_set_coherent_mask(&dev->core, dummy_mask);
 
 	snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);