On Sun, May 23, 2021 at 02:46:26PM +0800, YueHaibing wrote:
> Use DEVICE_ATTR_RO helper instead of plain DEVICE_ATTR,
> which makes the code a bit shorter and easier to read.
DEVICE_ATTR_RO()
DEVICE_ATTR()
After addressing above and below,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> ---
> mm/dmapool.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/mm/dmapool.c b/mm/dmapool.c
> index 16483f86360e..62083ef04878 100644
> --- a/mm/dmapool.c
> +++ b/mm/dmapool.c
> @@ -62,8 +62,8 @@ struct dma_page { /* cacheable header for 'allocation' bytes */
> static DEFINE_MUTEX(pools_lock);
> static DEFINE_MUTEX(pools_reg_lock);
>
> -static ssize_t
> -show_pools(struct device *dev, struct device_attribute *attr, char *buf)
> +static ssize_t pools_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> unsigned temp;
> unsigned size;
Unrelated change.
> @@ -103,7 +103,7 @@ show_pools(struct device *dev, struct device_attribute *attr, char *buf)
> return PAGE_SIZE - size;
> }
>
> -static DEVICE_ATTR(pools, 0444, show_pools, NULL);
> +static DEVICE_ATTR_RO(pools);
>
> /**
> * dma_pool_create - Creates a pool of consistent memory blocks, for dma.
> --
> 2.17.1
>
--
With Best Regards,
Andy Shevchenko
