usb: host: xhci: update hci_version operation in xhci_gen_setup()

There is no need to store temperary value in hcc_params.

Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220303110903.1662404-8-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 6b32f7e..e17eef8 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -5279,8 +5279,7 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
        xhci->hcs_params1 = readl(&xhci->cap_regs->hcs_params1);
        xhci->hcs_params2 = readl(&xhci->cap_regs->hcs_params2);
        xhci->hcs_params3 = readl(&xhci->cap_regs->hcs_params3);
-       xhci->hcc_params = readl(&xhci->cap_regs->hc_capbase);
-       xhci->hci_version = HC_VERSION(xhci->hcc_params);
+       xhci->hci_version = HC_VERSION(readl(&xhci->cap_regs->hc_capbase));
        xhci->hcc_params = readl(&xhci->cap_regs->hcc_params);
        if (xhci->hci_version > 0x100)
                xhci->hcc_params2 = readl(&xhci->cap_regs->hcc_params2);