[PATCH] soc/fsl/guts: Add a NULL check for devm_kasprintf()

[Fabio Estevam]

From: Fabio Estevam <fabio.este...@nxp.com>

devm_kasprintf() may fail, so we should better add a NULL check
and propagate an error on failure.

Signed-off-by: Fabio Estevam <fabio.este...@nxp.com>
---
 drivers/soc/fsl/guts.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c
index d89a6a8..82251b4 100644
--- a/drivers/soc/fsl/guts.c
+++ b/drivers/soc/fsl/guts.c
@@ -167,10 +167,16 @@ static int fsl_guts_probe(struct platform_device *pdev)
        } else {
                soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
        }
+       if (!soc_dev_attr.family)
+               return -ENOMEM;
        soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
                                             "svr:0x%08x", svr);
+       if (!soc_dev_attr.soc_id)
+               return -ENOMEM;
        soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
                                               (svr >>  4) & 0xf, svr & 0xf);
+       if (!soc_dev_attr.revision)
+               return -ENOMEM;
 
        soc_dev = soc_device_register(&soc_dev_attr);
        if (IS_ERR(soc_dev))
-- 
2.7.4