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0980bb1ff0
For sysfs outputs, it's safer to use a new helper, sysfs_emit(), instead of the raw sprintf() & co. This patch replaces such sprintf() calls with sysfs_emit() while simplifying the open code in modalias_show(); as modalias[] is a NUL-terminated string, we can pass it straightly to a printf() argument. Link: https://lore.kernel.org/r/20220801165639.26030-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/stat.h>
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/* FIX UP */
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#include "soundbus.h"
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static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct soundbus_dev *sdev = to_soundbus_device(dev);
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struct platform_device *of = &sdev->ofdev;
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if (*sdev->modalias)
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return sysfs_emit(buf, "%s\n", sdev->modalias);
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else
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return sysfs_emit(buf, "of:N%pOFn%c%s\n",
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of->dev.of_node, 'T',
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of_node_get_device_type(of->dev.of_node));
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}
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static DEVICE_ATTR_RO(modalias);
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static ssize_t name_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct soundbus_dev *sdev = to_soundbus_device(dev);
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struct platform_device *of = &sdev->ofdev;
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return sysfs_emit(buf, "%pOFn\n", of->dev.of_node);
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}
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static DEVICE_ATTR_RO(name);
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static ssize_t type_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct soundbus_dev *sdev = to_soundbus_device(dev);
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struct platform_device *of = &sdev->ofdev;
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return sysfs_emit(buf, "%s\n", of_node_get_device_type(of->dev.of_node));
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}
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static DEVICE_ATTR_RO(type);
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struct attribute *soundbus_dev_attrs[] = {
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&dev_attr_name.attr,
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&dev_attr_type.attr,
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&dev_attr_modalias.attr,
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NULL,
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};
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