Commit fb5f1834 authored by Boris BREZILLON's avatar Boris BREZILLON Committed by Greg Kroah-Hartman
Browse files

usb: ohci-at91: fix irq and iomem resource retrieval 



When using dt resources retrieval (interrupts and reg properties) there is
no predefined order for these resources in the platform dev resources
table.

Retrieve resources using platform_get_resource and platform_get_irq
functions instead of direct resource table entries to avoid resource type
mismatch.

Signed-off-by: default avatarBoris BREZILLON <b.brezillon@overkiz.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Reviewed-by: default avatarTomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7cd0c298

drivers/usb/host/ohci-at91.c

+15 −11
Original line number Diff line number Diff line
@@ -136,23 +136,27 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, 
	struct ohci_hcd *ohci;

	int retval;

	struct usb_hcd *hcd = NULL;

	struct device *dev = &pdev->dev;

	struct resource *res;

	int irq;



	if (pdev->num_resources != 2) {

		pr_debug("hcd probe: invalid num_resources");

		return -ENODEV;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_dbg(dev, "hcd probe: missing memory resource\n");

		return -ENXIO;

	}



	if ((pdev->resource[0].flags != IORESOURCE_MEM)

			|| (pdev->resource[1].flags != IORESOURCE_IRQ)) {

		pr_debug("hcd probe: invalid resource type\n");

		return -ENODEV;

	irq = platform_get_irq(pdev, 0);

	if (irq < 0) {

		dev_dbg(dev, "hcd probe: missing irq resource\n");

		return irq;

	}



	hcd = usb_create_hcd(driver, &pdev->dev, "at91");

	if (!hcd)

		return -ENOMEM;

	hcd->rsrc_start = pdev->resource[0].start;

	hcd->rsrc_len = resource_size(&pdev->resource[0]);

	hcd->rsrc_start = res->start;

	hcd->rsrc_len = resource_size(res);



	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {

		pr_debug("request_mem_region failed\n");
@@ -199,7 +203,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, 
	ohci->num_ports = board->ports;

	at91_start_hc(pdev);



	retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED);

	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);

	if (retval == 0)

		return retval;