linux-kernel - [PATCH] [media] budget-av: only use t

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Date:	Thu, 01 Nov 2012 21:24:30 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [media] budget-av: only use t_state if initialized

Building budget-av.o triggers this GCC warning:
    In file included from drivers/media/pci/ttpci/budget-av.c:44:0:
    drivers/media/dvb-frontends/tda8261_cfg.h: In function ‘tda8261_get_bandwidth’:
    drivers/media/dvb-frontends/tda8261_cfg.h:68:21: warning: ‘t_state.bandwidth’ may be used uninitialized in this function [-Wuninitialized]

Move the printk() that uses t_state.bandwith to the location where it
should be initialized to fix this.

Signed-off-by: Paul Bolle <pebolle@...cali.nl>
---
0) Compile tested only.

1) By the way, the first two if()-tests in tda8261_get_bandwidth()
should be superfluous. And the first two if()-tests in both
tda8261_get_frequency() and tda8261_set_frequency() look bogus to me, as
they should always succeed. If that's correct, there are some cleanups
possible in this header.

 drivers/media/dvb-frontends/tda8261_cfg.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/dvb-frontends/tda8261_cfg.h b/drivers/media/dvb-frontends/tda8261_cfg.h
index 1af1ee4..4671074 100644
--- a/drivers/media/dvb-frontends/tda8261_cfg.h
+++ b/drivers/media/dvb-frontends/tda8261_cfg.h
@@ -78,7 +78,7 @@ static int tda8261_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 			return err;
 		}
 		*bandwidth = t_state.bandwidth;
+		printk("%s: Bandwidth=%d\n", __func__, t_state.bandwidth);
 	}
-	printk("%s: Bandwidth=%d\n", __func__, t_state.bandwidth);
 	return 0;
 }
-- 
1.7.11.7

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