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- Bug Fixes

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- Use new reset_*_get_shared() variant to prevent reset line obtainment failure
     - Fixes: 0b52297 ("reset: Add support for shared reset controls")
   - Fix unintentional switch() fall-through into error path
   - Fix uninitialised variable compiler warning
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Merge tag 'mfd-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD fixes from Lee Jones:
 "Contained are some standard fixes and unusually an extension to the
  Reset API.  Some of those changes are required to fix a bug introduced
  in -rc1, which introduces extra 'reset line checks' i.e. whether the
  line is shared or not.  If a line is shared and the new *_shared() API
  is not used, the request fails with an error.  This breaks USB in v4.7
  for ST's platforms.

  Admittedly, there are some patches contained in our (MFD/Reset)
  immutable branch which are not true -fixes, but there isn't anything I
  can do about that.  Rest assured though, there aren't any API
  'changes'.  Everything is the same from the consumer's perspective.

   - Use new reset_*_get_shared() variant to prevent reset line
     obtainment failure (Fixes commit 0b52297f22: "reset: Add support
     for shared reset controls")

   - Fix unintentional switch() fall-through into error path

   - Fix uninitialised variable compiler warning"

* tag 'mfd-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mfd: da9053: Fix compiler warning message for uninitialised variable
  mfd: max77620: Fix FPS switch statements
  phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared
  usb: dwc3: st: Inform the reset framework that our reset line may be shared
  usb: host: ehci-st: Inform the reset framework that our reset line may be shared
  usb: host: ohci-st: Inform the reset framework that our reset line may be shared
  reset: TRIVIAL: Add line break at same place for similar APIs
  reset: Supply *_shared variant calls when using *_optional APIs
  reset: Supply *_shared variant calls when using of_* API
  reset: Ensure drivers are explicit when requesting reset lines
  reset: Reorder inline reset_control_get*() wrappers
This commit is contained in:
Linus Torvalds 2016-06-30 09:44:34 -07:00
commit 4aa34ce3c1
7 changed files with 181 additions and 51 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/usb/dwc3/dwc3-st.c
View file

@ -243,7 +243,8 @@ static int st_dwc3_probe(struct platform_device *pdev)
/* Manage PowerDown */
reset_control_deassert(dwc3_data->rstc_pwrdn);
dwc3_data->rstc_rst = devm_reset_control_get(dev, "softreset");
dwc3_data->rstc_rst =
devm_reset_control_get_shared(dev, "softreset");
if (IS_ERR(dwc3_data->rstc_rst)) {
dev_err(&pdev->dev, "could not get reset controller\n");
ret = PTR_ERR(dwc3_data->rstc_rst);

6
drivers/usb/host/ehci-st.c
View file

@ -206,7 +206,8 @@ static int st_ehci_platform_probe(struct platform_device *dev)
priv->clk48 = NULL;
}
priv->pwr = devm_reset_control_get_optional(&dev->dev, "power");
priv->pwr =
devm_reset_control_get_optional_shared(&dev->dev, "power");
if (IS_ERR(priv->pwr)) {
err = PTR_ERR(priv->pwr);
if (err == -EPROBE_DEFER)
@ -214,7 +215,8 @@ static int st_ehci_platform_probe(struct platform_device *dev)
priv->pwr = NULL;
}
priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset");
priv->rst =
devm_reset_control_get_optional_shared(&dev->dev, "softreset");
if (IS_ERR(priv->rst)) {
err = PTR_ERR(priv->rst);
if (err == -EPROBE_DEFER)

6
drivers/usb/host/ohci-st.c
View file

@ -188,13 +188,15 @@ static int st_ohci_platform_probe(struct platform_device *dev)
priv->clk48 = NULL;
}
priv->pwr = devm_reset_control_get_optional(&dev->dev, "power");
priv->pwr =
devm_reset_control_get_optional_shared(&dev->dev, "power");
if (IS_ERR(priv->pwr)) {
err = PTR_ERR(priv->pwr);
goto err_put_clks;
}
priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset");
priv->rst =
devm_reset_control_get_optional_shared(&dev->dev, "softreset");
if (IS_ERR(priv->rst)) {
err = PTR_ERR(priv->rst);
goto err_put_clks;