Messages in this thread | | | Date | Mon, 20 May 2013 21:21:23 +0200 | From | Lars-Peter Clausen <> | Subject | Re: [PATCH] dma: of-dma: Fix "'nbcells' may be used uninitialized" warning |
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On 05/20/2013 09:17 PM, Fabio Estevam wrote: > Rearrange the code a bit so that we can get rid of the following build warning: > > drivers/dma/of-dma.c:83:15: warning: 'nbcells' may be used uninitialized in this function [-Wuninitialized] > > Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Hi,
I've submitted a patch a couple of weeks ago which removes nbcells altogether. See: https://patchwork.kernel.org/patch/2470601/
- Lars
> --- > drivers/dma/of-dma.c | 20 ++++++++++++-------- > 1 file changed, 12 insertions(+), 8 deletions(-) > > diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c > index 7aa0864..107e820 100644 > --- a/drivers/dma/of-dma.c > +++ b/drivers/dma/of-dma.c > @@ -77,15 +77,14 @@ int of_dma_controller_register(struct device_node *np, > return -ENOMEM; > > prop = of_get_property(np, "#dma-cells", NULL); > - if (prop) > - nbcells = be32_to_cpup(prop); > + if (!prop) > + goto free; > + > + nbcells = be32_to_cpup(prop); > > - if (!prop || !nbcells) { > - pr_err("%s: #dma-cells property is missing or invalid\n", > - __func__); > - kfree(ofdma); > - return -EINVAL; > - } > + > + if (!nbcells) > + goto free; > > ofdma->of_node = np; > ofdma->of_dma_nbcells = nbcells; > @@ -98,6 +97,11 @@ int of_dma_controller_register(struct device_node *np, > mutex_unlock(&of_dma_lock); > > return 0; > + > +free: > + pr_err("%s: #dma-cells property is missing or invalid\n", __func__); > + kfree(ofdma); > + return -EINVAL; > } > EXPORT_SYMBOL_GPL(of_dma_controller_register); >
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