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authorVenu Byravarasu <vbyravarasu@nvidia.com>2012-08-10 06:12:43 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-10 18:57:37 (GMT)
commitecc8a0cdca18df5c9a7e84ab29160259123f3ae5 (patch)
tree06344de023485d080d96302b98faef7f18f3ac45
parentcc59c7a9633a2d68d8bf908e4e45571d10e08117 (diff)
downloadlinux-ecc8a0cdca18df5c9a7e84ab29160259123f3ae5.tar.xz
usb: host: tegra: fix warning messages in ehci_remove
Existing implementation of tegra_ehci_remove() calls usb_put_hcd(hcd) first and then iounmap(hcd->regs). usb_put_hcd() implementation calls hcd_release() which frees up memory allocated for hcd. As iounmap is trying to unmap hcd->regs, after hcd getting freed up, warning messages were observed during unload of USB. Hence fixing it. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/host/ehci-tegra.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 950e95e..26dedb3 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -799,11 +799,12 @@ static int tegra_ehci_remove(struct platform_device *pdev)
#endif
usb_remove_hcd(hcd);
- usb_put_hcd(hcd);
tegra_usb_phy_close(tegra->phy);
iounmap(hcd->regs);
+ usb_put_hcd(hcd);
+
clk_disable_unprepare(tegra->clk);
clk_put(tegra->clk);