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usb: host: xhci: plat: check hcc_params after add hcd

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commit 5de4e1ea9a731cad195ce5152705c21daef3bbba upstream.

The commit 4ac53087d6 ("usb: xhci: plat: Create both
HCDs before adding them") move add hcd to the end of
probe, this cause hcc_params uninitiated, because xHCI
driver sets hcc_params in xhci_gen_setup() called from
usb_add_hcd().

This patch checks the Maximum Primary Stream Array Size
in the hcc_params register after add primary hcd.

Signed-off-by: William wu <william.wu@rock-chips.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Fixes: 4ac53087d6 ("usb: xhci: plat: Create both HCDs before adding them")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
William wu 2017-01-17 15:32:07 +08:00 • committed by Greg Kroah-Hartman
parent 900466a746
commit 61e9e9bcfd
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/host/xhci-plat.c
View file

@ -162,9 +162,6 @@ static int xhci_plat_probe(struct platform_device *pdev)
(pdata && pdata->usb3_lpm_capable))
xhci->quirks |= XHCI_LPM_SUPPORT;
if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
hcd->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
if (IS_ERR(hcd->usb_phy)) {
ret = PTR_ERR(hcd->usb_phy);
@ -181,6 +178,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto disable_usb_phy;
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;