[U-Boot] [PATCH v4 11/18] usb: xhci: Get rid of CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS

[Bin Meng]

xHC reports supported maximum number of ports in the HCSPARAMS1
register, so it's unnecessary to use a hardcoded config option
CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS.

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Stefan Roese <sr at denx.de>
Tested-by: Stefan Roese <sr at denx.de>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/usb/host/xhci.c | 8 +++++---
 drivers/usb/host/xhci.h | 4 +---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index d5a1b34..62ab62b 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -668,12 +668,14 @@ static int xhci_submit_root(struct usb_device *udev, unsigned long pipe,
 	uint32_t reg;
 	volatile uint32_t *status_reg;
 	struct xhci_ctrl *ctrl = xhci_get_ctrl(udev);
+	struct xhci_hccr *hccr = ctrl->hccr;
 	struct xhci_hcor *hcor = ctrl->hcor;
+	int max_ports = HCS_MAX_PORTS(xhci_readl(&hccr->cr_hcsparams1));
 
 	if ((req->requesttype & USB_RT_PORT) &&
-	    le16_to_cpu(req->index) > CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS) {
-		printf("The request port(%d) is not configured\n",
-			le16_to_cpu(req->index) - 1);
+	    le16_to_cpu(req->index) > max_ports) {
+		printf("The request port(%d) exceeds maximum port number\n",
+		       le16_to_cpu(req->index) - 1);
 		return -EINVAL;
 	}
 
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 3cf08e4..b9602ba 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -172,9 +172,7 @@ struct xhci_hcor {
 	volatile uint64_t or_dcbaap;
 	volatile uint32_t or_config;
 	volatile uint32_t reserved_2[241];
-	struct xhci_hcor_port_regs portregs[CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS];
-
-	uint32_t reserved_4[CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS * 254];
+	struct xhci_hcor_port_regs portregs[MAX_HC_PORTS];
 };
 
 /* USBCMD - USB command - command bitmasks */
-- 
2.9.2