Commit 09b7b1dd authored Oct 23, 2019 by Ajay Agarwal Committed by Gerrit - the friendly Code Review server Oct 28, 2019

usb: dwc3: debugfs: Add missing in_lpm check



dwc->in_lpm check is missing from dwc3_tx_request_queue_show
function. Calling it can lead to unclocked access of DWC3
register. Fix it by adding the missing check.

Change-Id: I7fac7f3bc0187636b7bc79dd241ec5fa29aa648c
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>

parent 01dafb76

drivers/usb/dwc3/debugfs.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -602,6 +602,11 @@ static int dwc3_tx_request_queue_show(struct seq_file s, void unused)
		unsigned long flags;
		u32 val;

		if (atomic_read(&dwc->in_lpm)) {
		seq_puts(s, "USB device is powered off\n");
		return 0;
		}

		spin_lock_irqsave(&dwc->lock, flags);
		val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
		seq_printf(s, "%u\n", val);