Implement ->proc_read_buf() so procfs copies what is read to userspace
after it unpinned the entry.
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---
arch/arm/kernel/atags_proc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kernel/atags_proc.c b/arch/arm/kernel/atags_proc.c
index 8411fbfbcb8b..ff28bf24dd30 100644
--- a/arch/arm/kernel/atags_proc.c
+++ b/arch/arm/kernel/atags_proc.c
@@ -10,15 +10,15 @@ struct buffer {
char data[] __counted_by(size);
};
-static ssize_t atags_read(struct file *file, char __user *buf,
+static ssize_t atags_read(struct file *file, char *buf,
size_t count, loff_t *ppos)
{
struct buffer *b = pde_data(file_inode(file));
- return simple_read_from_buffer(buf, count, ppos, b->data, b->size);
+ return memory_read_from_buffer(buf, count, ppos, b->data, b->size);
}
static const struct proc_ops atags_proc_ops = {
- .proc_read = atags_read,
+ .proc_read_buf = atags_read,
.proc_lseek = default_llseek,
};
--
2.53.0