Implement ->proc_read_buf() so procfs copies what is read to userspace
after it unpinned the entry.

Signed-off-by: Christian Brauner (Amutable) <[email protected]>
---
 arch/m68k/kernel/bootinfo_proc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/m68k/kernel/bootinfo_proc.c b/arch/m68k/kernel/bootinfo_proc.c
index 857fa2aaa748..4936cf44e86a 100644
--- a/arch/m68k/kernel/bootinfo_proc.c
+++ b/arch/m68k/kernel/bootinfo_proc.c
@@ -19,15 +19,15 @@ static char bootinfo_tmp[1536] __initdata;
 static void *bootinfo_copy;
 static size_t bootinfo_size;
 
-static ssize_t bootinfo_read(struct file *file, char __user *buf,
+static ssize_t bootinfo_read(struct file *file, char *buf,
                          size_t count, loff_t *ppos)
 {
-       return simple_read_from_buffer(buf, count, ppos, bootinfo_copy,
+       return memory_read_from_buffer(buf, count, ppos, bootinfo_copy,
                                       bootinfo_size);
 }
 
 static const struct proc_ops bootinfo_proc_ops = {
-       .proc_read      = bootinfo_read,
+       .proc_read_buf  = bootinfo_read,
        .proc_lseek     = default_llseek,
 };
 

-- 
2.53.0

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