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Date: Tue, 3 Jul 2012 14:34:21 -0600 From: Stephen Warren <swarren@...dotorg.org> To: Thierry Reding <thierry.reding@...onic-design.de> Cc: linux-kernel@...r.kernel.org, Stephen Warren <swarren@...dia.com> Subject: [PATCH] pwm: fix used-uninitialized warning in pwm_get() From: Stephen Warren <swarren@...dia.com> This fixes: drivers/pwm/core.c: In function 'pwm_get': drivers/pwm/core.c:534:15: warning: 'index' may be used uninitialized in this function The addition to the if condition at end of the function isn't strictly necessary to solve the warning, but does make it more obvious that the initialization of "index" to a dummy value isn't just hiding the problem. Signed-off-by: Stephen Warren <swarren@...dia.com> --- drivers/pwm/core.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index dbab530..2b401c0 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -531,7 +531,7 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id) struct pwm_chip *chip = NULL; unsigned int best = 0; struct pwm_lookup *p; - unsigned int index; + unsigned int index = -1; unsigned int match; /* look up via DT first */ @@ -588,7 +588,7 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id) } } - if (chip) + if (chip && index != -1) pwm = pwm_request_from_chip(chip, index, con_id ?: dev_id); mutex_unlock(&pwm_lookup_lock); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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