linux-kernel - [PATCH 4.19 02/45] gcc-9: dont warn about uninitialized variable

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Date:   Thu,  8 Aug 2019 21:04:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 4.19 02/45] gcc-9: dont warn about uninitialized variable

From: Linus Torvalds <torvalds@...ux-foundation.org>

commit cf676908846a06443fa5e6724ca3f5dd7460eca1 upstream.

I'm not sure what made gcc warn about this code now.  The 'ret' variable
does end up initialized in all cases, but it's definitely not obvious,
so the compiler is quite reasonable to warn about this.

So just add initialization to make it all much more obvious both to
compilers and to humans.

Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/i2c/i2c-core-base.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -185,7 +185,7 @@ static int i2c_generic_bus_free(struct i
 int i2c_generic_scl_recovery(struct i2c_adapter *adap)
 {
 	struct i2c_bus_recovery_info *bri = adap->bus_recovery_info;
-	int i = 0, scl = 1, ret;
+	int i = 0, scl = 1, ret = 0;
 
 	if (bri->prepare_recovery)
 		bri->prepare_recovery(adap);