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authorWilliam wu <william.wu@rock-chips.com>2017-01-17 15:32:07 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-12 06:37:29 +0100
commit61e9e9bcfd7b7b5645db191434d922f3bd25fa88 (patch)
tree32f52208f86f12304341f3e79383fa7103d2ecaf /drivers/usb/host/xhci-plat.c
parent900466a746f560c0c2032c2e2060fd538a899ea2 (diff)
usb: host: xhci: plat: check hcc_params after add hcd
commit 5de4e1ea9a731cad195ce5152705c21daef3bbba upstream. The commit 4ac53087d6d4 ("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: 4ac53087d6d4 ("usb: xhci: plat: Create both HCDs before adding them") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-plat.c')
-rw-r--r--drivers/usb/host/xhci-plat.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 4fe7c9b56bc0..19cb32a65161 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -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;