As the possible failure of the kmalloc(), it should be better
to fix this error path, check and return '-ENOMEM' error code.

Signed-off-by: Li Qiong <liqiong@nfschina.com>
---
 drivers/parisc/ccio-dma.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 9be007c9420f..f69ab90b5e22 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -1380,15 +1380,17 @@ ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr)
 	}
 }
 
-static void __init ccio_init_resources(struct ioc *ioc)
+static int __init ccio_init_resources(struct ioc *ioc)
 {
 	struct resource *res = ioc->mmio_region;
 	char *name = kmalloc(14, GFP_KERNEL);
-
+	if (unlikely(!name))
+		return -ENOMEM;
 	snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path);
 
 	ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low);
 	ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv);
+	return 0;
 }
 
 static int new_ioc_area(struct resource *res, unsigned long size,
@@ -1543,7 +1545,10 @@ static int __init ccio_probe(struct parisc_device *dev)
 		return -ENOMEM;
 	}
 	ccio_ioc_init(ioc);
-	ccio_init_resources(ioc);
+	if (ccio_init_resources(ioc)) {
+		kfree(ioc);
+		return -ENOMEM;
+	}
 	hppa_dma_ops = &ccio_ops;
 
 	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
-- 
2.25.1

On 8/19/22 06:15, Li Qiong wrote:
> As the possible failure of the kmalloc(), it should be better
> to fix this error path, check and return '-ENOMEM' error code.
>
> Signed-off-by: Li Qiong <liqiong@nfschina.com>

applied.

Thanks!
Helge

> ---
>  drivers/parisc/ccio-dma.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
> index 9be007c9420f..f69ab90b5e22 100644
> --- a/drivers/parisc/ccio-dma.c
> +++ b/drivers/parisc/ccio-dma.c
> @@ -1380,15 +1380,17 @@ ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr)
>  	}
>  }
>
> -static void __init ccio_init_resources(struct ioc *ioc)
> +static int __init ccio_init_resources(struct ioc *ioc)
>  {
>  	struct resource *res = ioc->mmio_region;
>  	char *name = kmalloc(14, GFP_KERNEL);
> -
> +	if (unlikely(!name))
> +		return -ENOMEM;
>  	snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path);
>
>  	ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low);
>  	ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv);
> +	return 0;
>  }
>
>  static int new_ioc_area(struct resource *res, unsigned long size,
> @@ -1543,7 +1545,10 @@ static int __init ccio_probe(struct parisc_device *dev)
>  		return -ENOMEM;
>  	}
>  	ccio_ioc_init(ioc);
> -	ccio_init_resources(ioc);
> +	if (ccio_init_resources(ioc)) {
> +		kfree(ioc);
> +		return -ENOMEM;
> +	}
>  	hppa_dma_ops = &ccio_ops;
>
>  	hba = kzalloc(sizeof(*hba), GFP_KERNEL);