From: John Keeping <john@metanate.com>
Date: Thu, 19 Dec 2019 11:34:32 +0000 (+0000)
Subject: usb: dwc2: fix debugfs FIFO count
X-Git-Tag: v5.6-rc1~140^2~57
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=7037e101b648f8534119733e0aba215097ecd4d4;p=linux.git

usb: dwc2: fix debugfs FIFO count

The number of FIFOs may be lower than the number of endpoints.  Use the
correct total when printing FIFO details in debugfs.

Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c
index b8f2790abf91..3a0dcbfbc827 100644
--- a/drivers/usb/dwc2/debugfs.c
+++ b/drivers/usb/dwc2/debugfs.c
@@ -183,6 +183,7 @@ DEFINE_SHOW_ATTRIBUTE(state);
 static int fifo_show(struct seq_file *seq, void *v)
 {
 	struct dwc2_hsotg *hsotg = seq->private;
+	int fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
 	u32 val;
 	int idx;
 
@@ -196,7 +197,7 @@ static int fifo_show(struct seq_file *seq, void *v)
 
 	seq_puts(seq, "\nPeriodic TXFIFOs:\n");
 
-	for (idx = 1; idx < hsotg->num_of_eps; idx++) {
+	for (idx = 1; idx <= fifo_count; idx++) {
 		val = dwc2_readl(hsotg, DPTXFSIZN(idx));
 
 		seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,