Hello.

On 12/05/2013 12:54 PM, Boris BREZILLON wrote:
Replace the request_mem_region + ioremap calls by the
devm_request_and_ioremap call which does the same things but with device
managed resources.
Signed-off-by: Boris BREZILLON <b.brezil...@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.fe...@atmel.com>
Signed-off-by: Alan Stern <st...@rowland.harvard.edu>
---
  drivers/usb/host/ohci-at91.c |   24 +++++-------------------
  1 file changed, 5 insertions(+), 19 deletions(-)
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 7aec6ca..8528895 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -157,24 +157,18 @@ static int usb_hcd_at91_probe(const struct hc_driver 
*driver,
        hcd->rsrc_start = mem_r->start;
        hcd->rsrc_len = resource_size(mem_r);

-       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-               pr_debug("request_mem_region failed\n");
-               retval = -EBUSY;
-               goto err1;
-       }
-
-       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+       hcd->regs = devm_request_and_ioremap(dev, mem_r);
   This function is already deprecated, use devm_ioremap_resource() instead 
(it returns error pointer, not NULL on error).
        if (!hcd->regs) {
-               pr_debug("ioremap failed\n");
+               dev_dbg(dev, "devm_request_and_ioremap failed\n");
   There's no need -- those functions print error messages themselves.

                retval = -EIO;
-               goto err2;
+               goto err;
        }
[...]

WBR, Sergei

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