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authorYueHaibing <yuehaibing@huawei.com>2021-06-29 05:40:05 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 20:53:52 +0300
commite8df2c703d5d1a99cfc45124bfa6f5e1982e0166 (patch)
treecc3818c3ec29e0dd64d86cdb6f357a639d7952c0 /mm/dmapool.c
parentf4c1ab0937c3a22c5e6e735b47fa3fa9c68dc26e (diff)
downloadlinux-e8df2c703d5d1a99cfc45124bfa6f5e1982e0166.tar.xz
mm/dmapool: use DEVICE_ATTR_RO macro
Use DEVICE_ATTR_RO() helper instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Link: https://lkml.kernel.org/r/20210524112852.34716-1-yuehaibing@huawei.com Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/dmapool.c')
-rw-r--r--mm/dmapool.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/dmapool.c b/mm/dmapool.c
index 16483f86360e..64b537b3ccb0 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -62,8 +62,7 @@ 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;
@@ -103,7 +102,7 @@ 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.