Commit 7cd11d1c authored Mar 09, 2014 by Bar Weiner

usb: bam: Fix IPA resource manager status flags



Without this fix, cons_stopped and prod_stopped flags
are only cleared for the first pipe of each usb bam
connection. For multiple connect/disconnect and
suspend/resume sequences this can cause an issue
where the flags are not valid which result in
start_cons_transfer() returns without executing,
which cause a data stall.
This fix solve this problem by updating these flags
for each pipe.

Change-Id: Idd4eeffd0a04de8c70b7f3b59fc3287cc9abea42
Signed-off-by: Bar Weiner <bweiner@codeaurora.org>

parent 2b979b24

drivers/platform/msm/usb_bam.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -2021,12 +2021,12 @@ int usb_bam_connect_ipa(struct usb_bam_connect_ipa_params *ipa_params)
		info[cur_bam].pipes_suspended = 0;
		info[cur_bam].pipes_to_suspend = 0;
		info[cur_bam].pipes_resumed = 0;
		pipe_connect->cons_stopped = 0;
		pipe_connect->prod_stopped = 0;
		spin_unlock(&usb_bam_ipa_handshake_info_lock);
		usb_bam_resume_core(cur_bam, USB_BAM_DEVICE);
		} else
		spin_unlock(&usb_bam_lock);
		pipe_connect->cons_stopped = 0;
		pipe_connect->prod_stopped = 0;
		}

		/* Check if BAM requires RESET before connect and reset first pipe */