From: Dima Zavin <dima@android.com>
Date: Wed, 26 Oct 2011 04:24:10 +0000 (-0700)
Subject: ARM: common: fiq_debugger: peek the 0th char in ringbuf
X-Git-Tag: firefly_0821_release~7613^2~254
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b0092759638469a3a0ff12aa50985cc44ecbc980;p=firefly-linux-kernel-4.4.55.git

ARM: common: fiq_debugger: peek the 0th char in ringbuf

ringbuf_consume advances the tail ptr, so peek should always
just peek at offset 0

Change-Id: I8d3d22d2ec1e563d73b53ccbad302e6d74e64e53
Signed-off-by: Dima Zavin <dima@android.com>
---

diff --git a/arch/arm/common/fiq_debugger.c b/arch/arm/common/fiq_debugger.c
index 46bf7af88ff9..71fa962bc535 100644
--- a/arch/arm/common/fiq_debugger.c
+++ b/arch/arm/common/fiq_debugger.c
@@ -578,7 +578,7 @@ static irqreturn_t debug_irq(int irq, void *dev)
 		int i;
 		int count = fiq_debugger_ringbuf_level(state->tty_rbuf);
 		for (i = 0; i < count; i++) {
-			int c = fiq_debugger_ringbuf_peek(state->tty_rbuf, i);
+			int c = fiq_debugger_ringbuf_peek(state->tty_rbuf, 0);
 			tty_insert_flip_char(state->tty, c, TTY_NORMAL);
 			if (!fiq_debugger_ringbuf_consume(state->tty_rbuf, 1))
 				pr_warn("fiq tty failed to consume byte\n");