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/xtensa/platforms/iss/simdisk.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index b2f9e7f3ade3..b597d8642e8a 100644
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -234,7 +234,7 @@ static int simdisk_detach(struct simdisk *dev)
return err;
}
-static ssize_t proc_read_simdisk(struct file *file, char __user *buf,
+static ssize_t proc_read_simdisk(struct file *file, char *buf,
size_t size, loff_t *ppos)
{
struct simdisk *dev = pde_data(file_inode(file));@@ -250,7 +250,7 @@ static ssize_t proc_read_simdisk(struct file *file, char __user *buf,
len = scnprintf(temp, PAGE_SIZE + 2, "%s\n", dev->filename ?: "");
spin_unlock(&dev->lock);
- len = simple_read_from_buffer(buf, size, ppos, temp, len);
+ len = memory_read_from_buffer(buf, size, ppos, temp, len);
kfree(temp);
return len;
}
@@ -280,7 +280,7 @@ static ssize_t proc_write_simdisk(struct file *file, char *buf,
}
static const struct proc_ops simdisk_proc_ops = {
- .proc_read = proc_read_simdisk,
+ .proc_read_buf = proc_read_simdisk,
.proc_write_buf = proc_write_simdisk,
.proc_write_size = PAGE_SIZE,
.proc_lseek = default_llseek,
--
2.53.0