From: David Rowe <david@rowetel.com>
Date: Wed, 20 May 2009 01:48:27 +0000 (+0930)
Subject: Staging: oslec bug fix
X-Git-Tag: v3.12-rc1~14093^2~41
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0f51010e87636ed93338f4d9a987a466ca0d6969;p=kernel%2Fkernel-generic.git

Staging: oslec bug fix

I have just had a bug fix submitted for Oslec which I have applied to
Oslec SVN. The bug can potentially stops the echo canceller adapting
after a few seconds, although it hasn't caused many problems in
practice.

Signed-off-by: David Rowe <david@rowetel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/echo/echo.c b/drivers/staging/echo/echo.c
index 6d7217e..79d15c6 100644
--- a/drivers/staging/echo/echo.c
+++ b/drivers/staging/echo/echo.c
@@ -395,7 +395,7 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
 		old = (int)ec->fir_state.history[ec->fir_state.curr_pos] *
 		    (int)ec->fir_state.history[ec->fir_state.curr_pos];
 		ec->Pstates +=
-		    ((new - old) + (1 << ec->log2taps)) >> ec->log2taps;
+		    ((new - old) + (1 << (ec->log2taps-1))) >> ec->log2taps;
 		if (ec->Pstates < 0)
 			ec->Pstates = 0;
 	}