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| author |   Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-06-09 17:33:31 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-13 10:54:40 +0200 |
| commit | 0f4c3f9021ebc168e25d3a0ba6d65ac6e890e779 (patch) | |
| tree | a2859d9b66d13e25aa42e6153815fa1304f0ac37 /drivers/usb/mtu3/mtu3_plat.c | |
| parent | usbip: vhci-hcd: Clean up the code by adding a new macro (diff) | |
| download | wireguard-linux-0f4c3f9021ebc168e25d3a0ba6d65ac6e890e779.tar.xz wireguard-linux-0f4c3f9021ebc168e25d3a0ba6d65ac6e890e779.zip | |
usb: mtu3: Handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/mtu3/mtu3_plat.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_plat.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index 42550c7db3e7..0d3ebb353e08 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -458,6 +458,7 @@ static int __maybe_unused mtu3_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct ssusb_mtk *ssusb = platform_get_drvdata(pdev); + int ret; dev_dbg(dev, "%s\n", __func__); @@ -465,12 +466,28 @@ static int __maybe_unused mtu3_resume(struct device *dev) return 0; ssusb_wakeup_disable(ssusb); - clk_prepare_enable(ssusb->sys_clk); - clk_prepare_enable(ssusb->ref_clk); - ssusb_phy_power_on(ssusb); + ret = clk_prepare_enable(ssusb->sys_clk); + if (ret) + goto err_sys_clk; + + ret = clk_prepare_enable(ssusb->ref_clk); + if (ret) + goto err_ref_clk; + + ret = ssusb_phy_power_on(ssusb); + if (ret) + goto err_power_on; + ssusb_host_enable(ssusb); return 0; + +err_power_on: + clk_disable_unprepare(ssusb->ref_clk); +err_ref_clk: + clk_disable_unprepare(ssusb->sys_clk); +err_sys_clk: + return ret; } static const struct dev_pm_ops mtu3_pm_ops = { |