kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

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

Browse source 
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: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Boris BREZILLON 2013-12-08 15:59:59 +01:00 committed by Greg Kroah-Hartman
parent 7cd0c298f6
commit fb5f1834c3
1 changed files with 14 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
drivers/usb/host/ohci-at91.c
View file

@ -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;