linux-kernel - [PATCH 1/2] mtd: core: add MTD_DEVICE_ATTR

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Date:   Thu, 3 Jun 2021 20:53:22 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH 1/2] mtd: core: add MTD_DEVICE_ATTR_RO/RW() helper macros

Compared with the definition of DEVICE_ATTR_RO/RW(), the read and write
function names of the sysfs attribute have an additional "mtd_" prefix.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 drivers/mtd/mtdcore.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index ce514305f8f756e..770f64d6701567a 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -96,6 +96,12 @@ static void mtd_release(struct device *dev)
 	device_destroy(&mtd_class, index + 1);
 }
 
+#define MTD_DEVICE_ATTR_RO(name) \
+static DEVICE_ATTR(name, 0444, mtd_##name##_show, NULL)
+
+#define MTD_DEVICE_ATTR_RW(name) \
+static DEVICE_ATTR(name, 0644, mtd_##name##_show, mtd_##name##_store)
+
 static ssize_t mtd_type_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
-- 
2.26.0.106.g9fadedd