[PATCH 1/5] usb: host: xhci-plat: create shared hcd after having added main hcd
Heiner Kallweit
hkallweit1 at gmail.com
Fri Mar 4 10:34:23 PST 2022
This patch is in preparation of an extension where in case of a
root hub with no ports no shared hcd will be created.
Whether one of the root hubs has no ports we figure our in
usb_add_hcd() for the primary hcd. Therefore create the shared
hcd only after this call.
Signed-off-by: Heiner Kallweit <hkallweit1 at gmail.com>
---
drivers/usb/host/xhci-plat.c | 28 +++++++++++++++-------------
1 file changed, 15 insertions(+), 13 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 8094da348..484c7fe3e 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -294,12 +294,6 @@ static int xhci_plat_probe(struct platform_device *pdev)
device_set_wakeup_capable(&pdev->dev, true);
xhci->main_hcd = hcd;
- xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
- dev_name(&pdev->dev), hcd);
- if (!xhci->shared_hcd) {
- ret = -ENOMEM;
- goto disable_clk;
- }
/* imod_interval is the interrupt moderation value in nanoseconds. */
xhci->imod_interval = 40000;
@@ -324,16 +318,15 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (IS_ERR(hcd->usb_phy)) {
ret = PTR_ERR(hcd->usb_phy);
if (ret == -EPROBE_DEFER)
- goto put_usb3_hcd;
+ goto disable_clk;
hcd->usb_phy = NULL;
} else {
ret = usb_phy_init(hcd->usb_phy);
if (ret)
- goto put_usb3_hcd;
+ goto disable_clk;
}
hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
- xhci->shared_hcd->tpl_support = hcd->tpl_support;
if (priv) {
ret = xhci_priv_plat_setup(hcd);
@@ -351,12 +344,21 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto disable_usb_phy;
+ xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
+ dev_name(&pdev->dev), hcd);
+ if (!xhci->shared_hcd) {
+ ret = -ENOMEM;
+ goto dealloc_usb2_hcd;
+ }
+
+ xhci->shared_hcd->tpl_support = hcd->tpl_support;
+
if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
if (ret)
- goto dealloc_usb2_hcd;
+ goto put_usb3_hcd;
device_enable_async_suspend(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
@@ -370,15 +372,15 @@ static int xhci_plat_probe(struct platform_device *pdev)
return 0;
+put_usb3_hcd:
+ usb_put_hcd(xhci->shared_hcd);
+
dealloc_usb2_hcd:
usb_remove_hcd(hcd);
disable_usb_phy:
usb_phy_shutdown(hcd->usb_phy);
-put_usb3_hcd:
- usb_put_hcd(xhci->shared_hcd);
-
disable_clk:
clk_disable_unprepare(xhci->clk);
--
2.35.1
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