From a23aa66baa3725e8707da46b18c645ad1a7243a0 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Thu, 7 Sep 2017 06:13:19 -0700
Subject: [PATCH] dm: usb: ehci: Implement get_max_xfer_size() operation
EHCD can handle any transfer length as long as there is enough free
heap space left, hence set the theoretical max number SIZE_MAX.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
---
drivers/usb/host/ehci-hcd.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 3243c1d1cf..be3e842dcc 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1596,6 +1596,17 @@ static int ehci_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
return _ehci_destroy_int_queue(udev, queue);
}
+static int ehci_get_max_xfer_size(struct udevice *dev, size_t *size)
+{
+ /*
+ * EHCD can handle any transfer length as long as there is enough
+ * free heap space left, hence set the theoretical max number here.
+ */
+ *size = SIZE_MAX;
+
+ return 0;
+}
+
int ehci_register(struct udevice *dev, struct ehci_hccr *hccr,
struct ehci_hcor *hcor, const struct ehci_ops *ops,
uint tweaks, enum usb_init_type init)
@@ -1658,6 +1669,7 @@ struct dm_usb_ops ehci_usb_ops = {
.create_int_queue = ehci_create_int_queue,
.poll_int_queue = ehci_poll_int_queue,
.destroy_int_queue = ehci_destroy_int_queue,
+ .get_max_xfer_size = ehci_get_max_xfer_size,
};
#endif
--
2.39.5