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Commit d2333632 authored by Sarah Sharp's avatar Sarah Sharp
Browse files

xhci: Don't warn about zeroed bMaxBurst descriptor field. 



The USB 3.0 specification says that the bMaxBurst field in the SuperSpeed
Endpoint Companion descriptor is supposed to indicate how many packets a
SS device can handle before it needs to wait for an explicit handshake
from the host controller.  A zero value means the device can only handle
one packet before it needs a handshake.  Remove a warning in the xHCI
driver that implies this is an invalid value.

Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
parent fccf4e86

drivers/usb/host/xhci-mem.c

+0 −2
Original line number Diff line number Diff line
@@ -1215,8 +1215,6 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, 
		ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet));

		/* dig out max burst from ep companion desc */

		max_packet = ep->ss_ep_comp.bMaxBurst;

		if (!max_packet)

			xhci_warn(xhci, "WARN no SS endpoint bMaxBurst\n");

		ep_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(max_packet));

		break;

	case USB_SPEED_HIGH: