File 0006-wctdm24xxp-Fix-uninitialized-variable-warn... of Package dahdi-linux

Overview Repositories Revisions Requests Users Attributes Meta

File 0006-wctdm24xxp-Fix-uninitialized-variable-warning.patch of Package dahdi-linux (Revision e1e7a8761fd5c39f13c975f986c7b0c9)

Currently displaying revision e1e7a8761fd5c39f13c975f986c7b0c9 , Show latest

From 26fb7c34cba98c08face72cf29b70dfdc71449c6 Mon Sep 17 00:00:00 2001
From: Shaun Ruffell <sruffell@sruffell.net>
Date: Sun, 23 Feb 2020 19:39:25 -0600
Subject: [PATCH 06/12] wctdm24xxp: Fix uninitialized variable warning.

gcc 10.x detected the following use of an uninitialized variable:

../drivers/dahdi/wctdm24xxp/xhfc.c: In function 'wctdm_init_b400m':
  ../drivers/dahdi/wctdm24xxp/xhfc.c:624:5: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
    624 |  if (*lastreg != (unsigned char)addr) {
        |     ^
  ../drivers/dahdi/wctdm24xxp/xhfc.c:2557:20: note: 'x' was declared here
   2557 |  unsigned char id, x;
        |

Signed-off-by: Shaun Ruffell <sruffell@sruffell.net>
---
 drivers/dahdi/wctdm24xxp/xhfc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dahdi/wctdm24xxp/xhfc.c b/drivers/dahdi/wctdm24xxp/xhfc.c
index d37fbd5..45339f2 100644
--- a/drivers/dahdi/wctdm24xxp/xhfc.c
+++ b/drivers/dahdi/wctdm24xxp/xhfc.c
@@ -2558,9 +2558,10 @@ static int b400m_probe(struct wctdm *wc, int modpos)
 	struct b400m *b4;
 	unsigned long flags;
 	int chiprev;
+	u8 lastreg = 0;
 
 	wctdm_setreg(wc, &wc->mods[modpos], 0x10, 0x10);
-	id = xhfc_getreg(wc, &wc->mods[modpos], R_CHIP_ID, &x);
+	id = xhfc_getreg(wc, &wc->mods[modpos], R_CHIP_ID, &lastreg);
 
 	/* chip ID high 7 bits must be 0x62, see datasheet */
 	if ((id & 0xfe) != 0x62)
@@ -2575,6 +2576,7 @@ static int b400m_probe(struct wctdm *wc, int modpos)
 
 	/* card found, enabled and main struct allocated.  Fill it out. */
 	b4->wc = wc;
+	b4->lastreg = lastreg;
 	b4->position = modpos;
 
 	/* which B400M in the system is this one? count all of them found so
-- 
2.29.2

Places

File 0006-wctdm24xxp-Fix-uninitialized-variable-warning.patch of Package dahdi-linux (Revision e1e7a8761fd5c39f13c975f986c7b0c9)

Places