| 1 | |
| 2 |
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| 3 | #include <linux/proc_fs.h>
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| 4 |
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| 5 | #include "fb_internal.h"
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| 6 |
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| 7 | static struct proc_dir_entry *fb_proc_dir_entry;
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| 8 |
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| 9 | static void *fb_seq_start(struct seq_file *m, loff_t *pos)
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| 10 | {
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| 11 | mutex_lock(®istration_lock);
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| 12 |
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| 13 | return (*pos < FB_MAX) ? pos : NULL;
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| 14 | }
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| 15 |
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| 16 | static void fb_seq_stop(struct seq_file *m, void *v)
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| 17 | {
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| 18 | mutex_unlock(®istration_lock);
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| 19 | }
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| 20 |
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| 21 | static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos)
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| 22 | {
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| 23 | (*pos)++;
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| 24 |
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| 25 | return (*pos < FB_MAX) ? pos : NULL;
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| 26 | }
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| 27 |
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| 28 | static int fb_seq_show(struct seq_file *m, void *v)
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| 29 | {
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| 30 | int i = *(loff_t *)v;
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| 31 | struct fb_info *fi = registered_fb[i];
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| 32 |
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| 33 | if (fi)
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| 34 | seq_printf(m, "%d %s\n", fi->node, fi->fix.id);
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| 35 |
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| 36 | return 0;
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| 37 | }
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| 38 |
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| 39 | static const struct seq_operations __maybe_unused fb_proc_seq_ops = {
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| 40 | .start = fb_seq_start,
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| 41 | .stop = fb_seq_stop,
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| 42 | .next = fb_seq_next,
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| 43 | .show = fb_seq_show,
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| 44 | };
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| 45 |
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| 46 | int fb_init_procfs(void)
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| 47 | {
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| 48 | struct proc_dir_entry *proc;
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| 49 |
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| 50 | proc = proc_create_seq("fb", 0, NULL, &fb_proc_seq_ops);
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| 51 | if (!proc)
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| 52 | return -ENOMEM;
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| 53 |
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| 54 | fb_proc_dir_entry = proc;
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| 55 |
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| 56 | return 0;
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| 57 | }
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| 58 |
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| 59 | void fb_cleanup_procfs(void)
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| 60 | {
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| 61 | proc_remove(fb_proc_dir_entry);
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| 62 | }
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