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Subject[PATCH] xhci: Set shared HCD's hcd_priv in xhci_gen_setup
Date
xhci_gen_setup() sets the hcd_priv field for the primary HCD, but not
for the shared HCD, requiring xHCI host-controller drivers to set it
between usb_create_shared_hcd() and usb_add_hcd(). There's no reason
xhci_gen_setup() can't set the shared HCD's hcd_priv as well, so move
that bit out of the host-controller drivers and into xhci_gen_setup().

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
---
drivers/usb/host/xhci-pci.c | 5 -----
drivers/usb/host/xhci-plat.c | 5 -----
drivers/usb/host/xhci.c | 6 +++---
3 files changed, 3 insertions(+), 13 deletions(-)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 280dde9..dc0022c 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -231,11 +231,6 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
goto dealloc_usb2_hcd;
}

- /* Set the xHCI pointer before xhci_pci_setup() (aka hcd_driver.reset)
- * is called by usb_add_hcd().
- */
- *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
-
retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
IRQF_SHARED);
if (retval)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 3d78b0c..5bc33bc 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -149,11 +149,6 @@ static int xhci_plat_probe(struct platform_device *pdev)
if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
(pdata && pdata->usb3_lpm_capable))
xhci->quirks |= XHCI_LPM_SUPPORT;
- /*
- * Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)
- * is called by usb_add_hcd().
- */
- *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;

if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 2a5d45b..ae05471 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -4843,9 +4843,9 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
*/
hcd->has_tt = 1;
} else {
- /* xHCI private pointer was set in xhci_pci_probe for the second
- * registered roothub.
- */
+ xhci = hcd_to_xhci(hcd->primary_hcd);
+ *((struct xhci_hcd **) hcd->hcd_priv) = xhci;
+
return 0;
}

--
2.1.0.rc2.206.gedb03e5


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