linux-kernel - [PATCH 1/1] EISA: use DEVICE_ATTR

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Message-ID: <20210603090506.11771-1-thunder.leizhen@huawei.com>
Date:   Thu, 3 Jun 2021 17:05:06 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH 1/1] EISA: use DEVICE_ATTR_RO() helper macro

Use DEVICE_ATTR_RO() helper macro instead of DEVICE_ATTR(), which makes
the code a bit shorter and easier to read.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 drivers/eisa/eisa-bus.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c
index d9a16ba2ccc2899..65bffde137e3f70 100644
--- a/drivers/eisa/eisa-bus.c
+++ b/drivers/eisa/eisa-bus.c
@@ -155,34 +155,29 @@ void eisa_driver_unregister(struct eisa_driver *edrv)
 }
 EXPORT_SYMBOL(eisa_driver_unregister);
 
-static ssize_t eisa_show_sig(struct device *dev, struct device_attribute *attr,
-			     char *buf)
+static ssize_t signature_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
 {
 	struct eisa_device *edev = to_eisa_device(dev);
 	return sprintf(buf, "%s\n", edev->id.sig);
 }
+static DEVICE_ATTR_RO(signature);
 
-static DEVICE_ATTR(signature, S_IRUGO, eisa_show_sig, NULL);
-
-static ssize_t eisa_show_state(struct device *dev,
-			       struct device_attribute *attr,
-			       char *buf)
+static ssize_t enabled_show(struct device *dev,
+			    struct device_attribute *attr, char *buf)
 {
 	struct eisa_device *edev = to_eisa_device(dev);
 	return sprintf(buf, "%d\n", edev->state & EISA_CONFIG_ENABLED);
 }
+static DEVICE_ATTR_RO(enabled);
 
-static DEVICE_ATTR(enabled, S_IRUGO, eisa_show_state, NULL);
-
-static ssize_t eisa_show_modalias(struct device *dev,
-				  struct device_attribute *attr,
-				  char *buf)
+static ssize_t modalias_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
 {
 	struct eisa_device *edev = to_eisa_device(dev);
 	return sprintf(buf, EISA_DEVICE_MODALIAS_FMT "\n", edev->id.sig);
 }
-
-static DEVICE_ATTR(modalias, S_IRUGO, eisa_show_modalias, NULL);
+static DEVICE_ATTR_RO(modalias);
 
 static int __init eisa_init_device(struct eisa_root_device *root,
 				   struct eisa_device *edev,
-- 
2.26.0.106.g9fadedd