seq_file: Introduce DEFINE_SHOW_ATTRIBUTE() helper macro
The DEFINE_SHOW_ATTRIBUTE() helper macro would be useful for current users, which are many of them, and for new comers to decrease code duplication. Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Darren Hart (VMware) <dvhart@infradead.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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@@ -90,19 +90,6 @@ static int __name ## _show(struct seq_file *f, void *ptr) \
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\
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DEFINE_SHOW_ATTRIBUTE(__name)
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#define DEFINE_SHOW_ATTRIBUTE(__name) \
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static int __name ## _open(struct inode *inode, struct file *file) \
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{ \
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return single_open(file, __name ## _show, inode->i_private); \
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} \
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\
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static const struct file_operations __name ## _fops = { \
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.open = __name ## _open, \
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.read = seq_read, \
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.llseek = seq_lseek, \
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.release = single_release, \
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} \
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static int features_show(struct seq_file *f, void *ptr)
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{
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struct hci_dev *hdev = f->private;
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