Functionfs ep0 ioctls can be handled in the
same way as a normal ioctl. Underlying gadget
ioctls are passed to the underlying gadget's
compat_ioctl.
Signed-off-by: Jerry Zhang <zhangjerry@xxxxxxxxxx>
---
drivers/usb/gadget/function/f_fs.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 34d80cc2b667..ef349bdde001 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -641,6 +641,23 @@ static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value)
return ret;
}
+#ifdef CONFIG_COMPAT
+static long ffs_ep0_compat_ioctl(struct file *file, unsigned code, unsigned long value)
+{
+ long ret;
+
+ if (code == FUNCTIONFS_INTERFACE_REVMAP) {
+ ret = ffs_ep0_ioctl(file, code, value);
+ } else if (gadget && gadget->ops->compat_ioctl) {
+ ret = gadget->ops->compat_ioctl(gadget, code, value);
+ } else {
+ ret = -ENOTTY;
+ }
+
+ return ret;
+}
+#endif
+
static __poll_t ffs_ep0_poll(struct file *file, poll_table *wait)
{
struct ffs_data *ffs = file->private_data;
@@ -691,6 +708,9 @@ static const struct file_operations ffs_ep0_operations = {
.release = ffs_ep0_release,
.unlocked_ioctl = ffs_ep0_ioctl,
.poll = ffs_ep0_poll,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ffs_ep0_compat_ioctl,
+#endif
};
--
2.17.0.484.g0c8726318c-goog
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
