diff options
| author | Mark Brown <broonie@sirena.org.uk> | 2013-06-14 12:08:35 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@sirena.org.uk> | 2013-06-14 12:08:35 +0100 |
| commit | 017db6aba01656f754d034bf17c6fae0a76ca36e (patch) | |
| tree | a3cf0fd4d94aaaa6d56013da1386bd71ca929e52 /drivers/dma/of-dma.c | |
| parent | 964318b02e12781615db595075a29557f4302940 (diff) | |
| parent | 4b73febd1ba302268aabe370de25601eaa884b25 (diff) | |
Merge branch 'tracking-linux-3.x.y' into merge-manifest
Diffstat (limited to 'drivers/dma/of-dma.c')
| -rw-r--r-- | drivers/dma/of-dma.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 69d04d28b1e..09c7ad13031 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -93,6 +93,7 @@ int of_dma_controller_register(struct device_node *np, { struct of_dma *ofdma; int nbcells; + const __be32 *prop; if (!np || !of_dma_xlate) { pr_err("%s: not enough information provided\n", __func__); @@ -103,8 +104,11 @@ int of_dma_controller_register(struct device_node *np, if (!ofdma) return -ENOMEM; - nbcells = be32_to_cpup(of_get_property(np, "#dma-cells", NULL)); - if (!nbcells) { + prop = of_get_property(np, "#dma-cells", NULL); + if (prop) + nbcells = be32_to_cpup(prop); + + if (!prop || !nbcells) { pr_err("%s: #dma-cells property is missing or invalid\n", __func__); kfree(ofdma); |