Hello.

On 12/07/2015 12:30 PM, Lu Baolu wrote:

This patch fixes a 'quirk_usb_handoff_xhci()' branch return that was not 
unmapping correctly.

Coccinelle: scripts/coccinelle/free/iounmap.cocci

Signed-off-by: Geyslan G. Bem <[email protected]>
---
  drivers/usb/host/pci-quirks.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index f940056..64150dd 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -990,7 +990,7 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
                        /* We're reading garbage from the controller */
                        dev_warn(&pdev->dev,
                                 "xHCI controller failing to respond");
-                       return;
+                       goto out;

If "out" is only used here, why not iounmap and return directly here?

   Why repeat the code? Nah, bad idea.

                }

                if (!ext_cap_offset)
@@ -1062,6 +1062,7 @@ hc_init:
                         XHCI_MAX_HALT_USEC, val);
        }

+out:
        iounmap(base);
  }


MBR, Sergei

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