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Commit 7be40e05 authored by Jack Pham's avatar Jack Pham
Browse files

usb: pd: Don't retry sending Source Capabilities if PD capable 



If connected to a sink that we already know is PD capable, the
next time Source Capabilities is sent, whether due to reset or
in response Get_Source_Capabilities, upon failure should not
retry for nCapsCount times. Instead, simply issue a Soft Reset.

Change-Id: I5a53073f5473575e7206e1fdd344b8f14affddc2
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
parent 9f42ab89

drivers/usb/pd/policy_engine.c

+10 −0
Original line number Diff line number Diff line
@@ -1915,6 +1915,16 @@ static void handle_state_src_send_capabilities(struct usbpd *pd, 
	ret = pd_send_msg(pd, MSG_SOURCE_CAPABILITIES, default_src_caps,

			ARRAY_SIZE(default_src_caps), SOP_MSG);

	if (ret) {

		if (pd->pd_connected) {

			usbpd_set_state(pd, PE_SEND_SOFT_RESET);

			break;

		}



		/*

		 * Technically this is PE_SRC_Discovery, but we can

		 * handle it by setting a timer to come back to the

		 * same state for the next retry.

		 */

		pd->caps_count++;

		if (pd->caps_count >= PD_CAPS_COUNT) {

			usbpd_dbg(&pd->dev, "Src CapsCounter exceeded, disabling PD\n");