| Message ID | 1451998831-27705-4-git-send-email-phil.edworthy@renesas.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
> +err_pm_put: > + pm_runtime_put(pcie->dev); > + > +err_pm_disable: > + pm_runtime_disable(pcie->dev); What about put/disable in the remove part?
Hi Wolfram, On Wed, Jan 6, 2016 at 9:35 AM, Wolfram Sang <wsa@the-dreams.de> wrote: >> +err_pm_put: >> + pm_runtime_put(pcie->dev); >> + >> +err_pm_disable: >> + pm_runtime_disable(pcie->dev); > > What about put/disable in the remove part? Which remove part? (been there, done that ;-) Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- 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 Wed, Jan 06, 2016 at 09:45:46AM +0100, Geert Uytterhoeven wrote: > Hi Wolfram, > > On Wed, Jan 6, 2016 at 9:35 AM, Wolfram Sang <wsa@the-dreams.de> wrote: > >> +err_pm_put: > >> + pm_runtime_put(pcie->dev); > >> + > >> +err_pm_disable: > >> + pm_runtime_disable(pcie->dev); > > > > What about put/disable in the remove part? > > Which remove part? (been there, done that ;-) :D Sorry for the noise then! Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index 31ad93a..7e13fbb 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -27,6 +27,7 @@ #include <linux/of_platform.h> #include <linux/pci.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> #define DRV_NAME "rcar-pcie" @@ -1025,32 +1026,51 @@ static int rcar_pcie_probe(struct platform_device *pdev) if (err) return err; - if (IS_ENABLED(CONFIG_PCI_MSI)) { - err = rcar_pcie_enable_msi(pcie); - if (err < 0) { - dev_err(&pdev->dev, - "failed to enable MSI support: %d\n", - err); - return err; - } - } - of_id = of_match_device(rcar_pcie_of_match, pcie->dev); if (!of_id || !of_id->data) return -EINVAL; hw_init_fn = of_id->data; + pm_runtime_enable(pcie->dev); + err = pm_runtime_get_sync(pcie->dev); + if (err < 0) { + dev_err(pcie->dev, "pm_runtime_get_sync failed\n"); + goto err_pm_disable; + } + /* Failure to get a link might just be that no cards are inserted */ err = hw_init_fn(pcie); if (err) { dev_info(&pdev->dev, "PCIe link down\n"); - return 0; + err = 0; + goto err_pm_put; } data = rcar_pci_read_reg(pcie, MACSR); dev_info(&pdev->dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f); - return rcar_pcie_enable(pcie); + if (IS_ENABLED(CONFIG_PCI_MSI)) { + err = rcar_pcie_enable_msi(pcie); + if (err < 0) { + dev_err(&pdev->dev, + "failed to enable MSI support: %d\n", + err); + goto err_pm_put; + } + } + + err = rcar_pcie_enable(pcie); + if (err) + goto err_pm_put; + + return 0; + +err_pm_put: + pm_runtime_put(pcie->dev); + +err_pm_disable: + pm_runtime_disable(pcie->dev); + return err; } static struct platform_driver rcar_pcie_driver = {
If runtime PM is enabled in the kernel config, simply enable the clocks once during probe. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> --- v2: - No changes. --- drivers/pci/host/pcie-rcar.c | 44 ++++++++++++++++++++++++++++++++------------ 1 file changed, 32 insertions(+), 12 deletions(-)