| Message ID | 20150714201059.GG24416@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
Hi Bjorn, On 7/14/2015 1:10 PM, Bjorn Helgaas wrote: > On Sun, Jun 28, 2015 at 04:52:16PM +0200, SF Markus Elfring wrote: >> From: Markus Elfring <elfring@users.sourceforge.net> >> Date: Sun, 28 Jun 2015 16:42:04 +0200 >> >> The functions phy_exit() and phy_power_off() test whether their argument >> is NULL and then return immediately. >> Thus the test around the calls is not needed. >> >> This issue was detected by using the Coccinelle software. >> >> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> > > I haven't seen a followup to Ray's review, but in the interest of making > progress, I updated and applied the patch as appended. I also reviewed > other phy_*() calls under drivers/pci, and they all look OK (with no > unnecessary tests for NULL). > > This is on the pci/host-iproc branch for v4.3. > Hmmm....I searched my mailbox but cannot find an email with this patch (while I remember I reviewed and commented on the initial version of this patch). It must have gone into some sub-folder or deleted by me by accident. My bad. Nevertheless,the current patch looks good to me! Thanks, Ray >> --- >> drivers/pci/host/pcie-iproc.c | 7 ++----- >> 1 file changed, 2 insertions(+), 5 deletions(-) >> >> diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c >> index d77481e..f875821 100644 >> --- a/drivers/pci/host/pcie-iproc.c >> +++ b/drivers/pci/host/pcie-iproc.c >> @@ -239,12 +239,9 @@ err_rm_root_bus: >> pci_remove_root_bus(bus); >> >> err_power_off_phy: >> - if (pcie->phy) >> - phy_power_off(pcie->phy); >> + phy_power_off(pcie->phy); >> err_exit_phy: >> - if (pcie->phy) >> - phy_exit(pcie->phy); >> - >> + phy_exit(pcie->phy); >> return ret; >> } >> EXPORT_SYMBOL(iproc_pcie_setup); >> -- >> 2.4.4 > > commit 55b5e16332eb9ffc1cbaf975585f4521417ab427 > Author: Markus Elfring <elfring@users.sourceforge.net> > Date: Sun Jun 28 16:42:04 2015 +0200 > > PCI: iproc: Delete unnecessary checks before phy calls > > The functions phy_exit() and phy_power_off() test whether their argument is > NULL and then return immediately. Thus the test around the calls is not > needed. > > This issue was detected by using the Coccinelle software. > > [bhelgaas: also phy_init() and phy_power_on(), as Ray Jui suggested] > [bhelgaas: also remove tests in iproc_pcie_remove()] > Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> > Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> > > diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c > index d77481e..9a00dca 100644 > --- a/drivers/pci/host/pcie-iproc.c > +++ b/drivers/pci/host/pcie-iproc.c > @@ -191,19 +191,16 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) > if (!pcie || !pcie->dev || !pcie->base) > return -EINVAL; > > - if (pcie->phy) { > - ret = phy_init(pcie->phy); > - if (ret) { > - dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); > - return ret; > - } > - > - ret = phy_power_on(pcie->phy); > - if (ret) { > - dev_err(pcie->dev, "unable to power on PCIe PHY\n"); > - goto err_exit_phy; > - } > + ret = phy_init(pcie->phy); > + if (ret) { > + dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); > + return ret; > + } > > + ret = phy_power_on(pcie->phy); > + if (ret) { > + dev_err(pcie->dev, "unable to power on PCIe PHY\n"); > + goto err_exit_phy; > } > > iproc_pcie_reset(pcie); > @@ -239,12 +236,9 @@ err_rm_root_bus: > pci_remove_root_bus(bus); > > err_power_off_phy: > - if (pcie->phy) > - phy_power_off(pcie->phy); > + phy_power_off(pcie->phy); > err_exit_phy: > - if (pcie->phy) > - phy_exit(pcie->phy); > - > + phy_exit(pcie->phy); > return ret; > } > EXPORT_SYMBOL(iproc_pcie_setup); > @@ -254,10 +248,8 @@ int iproc_pcie_remove(struct iproc_pcie *pcie) > pci_stop_root_bus(pcie->root_bus); > pci_remove_root_bus(pcie->root_bus); > > - if (pcie->phy) { > - phy_power_off(pcie->phy); > - phy_exit(pcie->phy); > - } > + phy_power_off(pcie->phy); > + phy_exit(pcie->phy); > > return 0; > } > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, Jul 14, 2015 at 01:23:23PM -0700, Ray Jui wrote: > Hi Bjorn, > > On 7/14/2015 1:10 PM, Bjorn Helgaas wrote: > > On Sun, Jun 28, 2015 at 04:52:16PM +0200, SF Markus Elfring wrote: > >> From: Markus Elfring <elfring@users.sourceforge.net> > >> Date: Sun, 28 Jun 2015 16:42:04 +0200 > >> > >> The functions phy_exit() and phy_power_off() test whether their argument > >> is NULL and then return immediately. > >> Thus the test around the calls is not needed. > >> > >> This issue was detected by using the Coccinelle software. > >> > >> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> > > > > I haven't seen a followup to Ray's review, but in the interest of making > > progress, I updated and applied the patch as appended. I also reviewed > > other phy_*() calls under drivers/pci, and they all look OK (with no > > unnecessary tests for NULL). > > > > This is on the pci/host-iproc branch for v4.3. > > > > Hmmm....I searched my mailbox but cannot find an email with this patch > (while I remember I reviewed and commented on the initial version of > this patch). It must have gone into some sub-folder or deleted by me by > accident. My bad. > > Nevertheless,the current patch looks good to me! Thanks for checking it out! Can I add your Reviewed-by to the patch below? > > commit 55b5e16332eb9ffc1cbaf975585f4521417ab427 > > Author: Markus Elfring <elfring@users.sourceforge.net> > > Date: Sun Jun 28 16:42:04 2015 +0200 > > > > PCI: iproc: Delete unnecessary checks before phy calls > > > > The functions phy_exit() and phy_power_off() test whether their argument is > > NULL and then return immediately. Thus the test around the calls is not > > needed. > > > > This issue was detected by using the Coccinelle software. > > > > [bhelgaas: also phy_init() and phy_power_on(), as Ray Jui suggested] > > [bhelgaas: also remove tests in iproc_pcie_remove()] > > Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> > > Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> > > > > diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c > > index d77481e..9a00dca 100644 > > --- a/drivers/pci/host/pcie-iproc.c > > +++ b/drivers/pci/host/pcie-iproc.c > > @@ -191,19 +191,16 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) > > if (!pcie || !pcie->dev || !pcie->base) > > return -EINVAL; > > > > - if (pcie->phy) { > > - ret = phy_init(pcie->phy); > > - if (ret) { > > - dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); > > - return ret; > > - } > > - > > - ret = phy_power_on(pcie->phy); > > - if (ret) { > > - dev_err(pcie->dev, "unable to power on PCIe PHY\n"); > > - goto err_exit_phy; > > - } > > + ret = phy_init(pcie->phy); > > + if (ret) { > > + dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); > > + return ret; > > + } > > > > + ret = phy_power_on(pcie->phy); > > + if (ret) { > > + dev_err(pcie->dev, "unable to power on PCIe PHY\n"); > > + goto err_exit_phy; > > } > > > > iproc_pcie_reset(pcie); > > @@ -239,12 +236,9 @@ err_rm_root_bus: > > pci_remove_root_bus(bus); > > > > err_power_off_phy: > > - if (pcie->phy) > > - phy_power_off(pcie->phy); > > + phy_power_off(pcie->phy); > > err_exit_phy: > > - if (pcie->phy) > > - phy_exit(pcie->phy); > > - > > + phy_exit(pcie->phy); > > return ret; > > } > > EXPORT_SYMBOL(iproc_pcie_setup); > > @@ -254,10 +248,8 @@ int iproc_pcie_remove(struct iproc_pcie *pcie) > > pci_stop_root_bus(pcie->root_bus); > > pci_remove_root_bus(pcie->root_bus); > > > > - if (pcie->phy) { > > - phy_power_off(pcie->phy); > > - phy_exit(pcie->phy); > > - } > > + phy_power_off(pcie->phy); > > + phy_exit(pcie->phy); > > > > return 0; > > } > > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 7/14/2015 1:51 PM, Bjorn Helgaas wrote: > On Tue, Jul 14, 2015 at 01:23:23PM -0700, Ray Jui wrote: >> Hi Bjorn, >> >> On 7/14/2015 1:10 PM, Bjorn Helgaas wrote: >>> On Sun, Jun 28, 2015 at 04:52:16PM +0200, SF Markus Elfring wrote: >>>> From: Markus Elfring <elfring@users.sourceforge.net> >>>> Date: Sun, 28 Jun 2015 16:42:04 +0200 >>>> >>>> The functions phy_exit() and phy_power_off() test whether their argument >>>> is NULL and then return immediately. >>>> Thus the test around the calls is not needed. >>>> >>>> This issue was detected by using the Coccinelle software. >>>> >>>> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> >>> >>> I haven't seen a followup to Ray's review, but in the interest of making >>> progress, I updated and applied the patch as appended. I also reviewed >>> other phy_*() calls under drivers/pci, and they all look OK (with no >>> unnecessary tests for NULL). >>> >>> This is on the pci/host-iproc branch for v4.3. >>> >> >> Hmmm....I searched my mailbox but cannot find an email with this patch >> (while I remember I reviewed and commented on the initial version of >> this patch). It must have gone into some sub-folder or deleted by me by >> accident. My bad. >> >> Nevertheless,the current patch looks good to me! > > Thanks for checking it out! Can I add your Reviewed-by to the patch below? > Sure thanks! Reviewed-by: Ray Jui <rjui@broadcom.com> Ray -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index d77481e..9a00dca 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -191,19 +191,16 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) if (!pcie || !pcie->dev || !pcie->base) return -EINVAL; - if (pcie->phy) { - ret = phy_init(pcie->phy); - if (ret) { - dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); - return ret; - } - - ret = phy_power_on(pcie->phy); - if (ret) { - dev_err(pcie->dev, "unable to power on PCIe PHY\n"); - goto err_exit_phy; - } + ret = phy_init(pcie->phy); + if (ret) { + dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); + return ret; + } + ret = phy_power_on(pcie->phy); + if (ret) { + dev_err(pcie->dev, "unable to power on PCIe PHY\n"); + goto err_exit_phy; } iproc_pcie_reset(pcie); @@ -239,12 +236,9 @@ err_rm_root_bus: pci_remove_root_bus(bus); err_power_off_phy: - if (pcie->phy) - phy_power_off(pcie->phy); + phy_power_off(pcie->phy); err_exit_phy: - if (pcie->phy) - phy_exit(pcie->phy); - + phy_exit(pcie->phy); return ret; } EXPORT_SYMBOL(iproc_pcie_setup); @@ -254,10 +248,8 @@ int iproc_pcie_remove(struct iproc_pcie *pcie) pci_stop_root_bus(pcie->root_bus); pci_remove_root_bus(pcie->root_bus); - if (pcie->phy) { - phy_power_off(pcie->phy); - phy_exit(pcie->phy); - } + phy_power_off(pcie->phy); + phy_exit(pcie->phy); return 0; }