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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@ -1258,20 +1258,6 @@ static struct ab8500_prcmu_ranges ab8540_debug_ranges[AB8500_NUM_BANKS] = {
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},
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};
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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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.owner = THIS_MODULE, \
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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 irqreturn_t ab8500_debug_handler(int irq, void *data)
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{
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char buf[16];
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@ -208,20 +208,6 @@ static const struct pmc_data cht_data = {
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.clks = cht_clks,
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};
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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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.owner = THIS_MODULE, \
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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 inline u32 pmc_reg_read(struct pmc_dev *pmc, int reg_offset)
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{
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return readl(pmc->regmap + reg_offset);
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@ -140,6 +140,20 @@ void *__seq_open_private(struct file *, const struct seq_operations *, int);
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int seq_open_private(struct file *, const struct seq_operations *, int);
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int seq_release_private(struct inode *, struct file *);
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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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.owner = THIS_MODULE, \
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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 inline struct user_namespace *seq_user_ns(struct seq_file *seq)
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{
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#ifdef CONFIG_USER_NS
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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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