From: Zhen Lei <thunder.leizhen@huawei.com>
Date: Thu, 3 Jun 2021 11:09:02 +0000 (+0800)
Subject: can: esd_usb2: use DEVICE_ATTR_RO() helper macro
X-Git-Tag: microblaze-v5.16~158^2~392^2~26
X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=commitdiff_plain;h=681e4a76452172d06648d5337cc3207c866297db

can: esd_usb2: use DEVICE_ATTR_RO() helper macro

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

Link: https://lore.kernel.org/r/20210603110902.11930-1-thunder.leizhen@huawei.com
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---

diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
index 65b58f8fc328..60f3e0ca080a 100644
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -474,7 +474,7 @@ static void esd_usb2_write_bulk_callback(struct urb *urb)
 	netif_trans_update(netdev);
 }
 
-static ssize_t show_firmware(struct device *d,
+static ssize_t firmware_show(struct device *d,
 			     struct device_attribute *attr, char *buf)
 {
 	struct usb_interface *intf = to_usb_interface(d);
@@ -485,9 +485,9 @@ static ssize_t show_firmware(struct device *d,
 		       (dev->version >> 8) & 0xf,
 		       dev->version & 0xff);
 }
-static DEVICE_ATTR(firmware, 0444, show_firmware, NULL);
+static DEVICE_ATTR_RO(firmware);
 
-static ssize_t show_hardware(struct device *d,
+static ssize_t hardware_show(struct device *d,
 			     struct device_attribute *attr, char *buf)
 {
 	struct usb_interface *intf = to_usb_interface(d);
@@ -498,9 +498,9 @@ static ssize_t show_hardware(struct device *d,
 		       (dev->version >> 24) & 0xf,
 		       (dev->version >> 16) & 0xff);
 }
-static DEVICE_ATTR(hardware, 0444, show_hardware, NULL);
+static DEVICE_ATTR_RO(hardware);
 
-static ssize_t show_nets(struct device *d,
+static ssize_t nets_show(struct device *d,
 			 struct device_attribute *attr, char *buf)
 {
 	struct usb_interface *intf = to_usb_interface(d);
@@ -508,7 +508,7 @@ static ssize_t show_nets(struct device *d,
 
 	return sprintf(buf, "%d", dev->net_count);
 }
-static DEVICE_ATTR(nets, 0444, show_nets, NULL);
+static DEVICE_ATTR_RO(nets);
 
 static int esd_usb2_send_msg(struct esd_usb2 *dev, struct esd_usb2_msg *msg)
 {