From: Jerry Zhang <zhangjerry@google.com>
Date: Fri, 30 Mar 2018 22:32:19 +0000 (-0700)
Subject: usb: gadget: f_fs: Add compat_ioctl to epfiles
X-Git-Tag: pci-v4.18-changes-2~32^2~81^2~93
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6819e3233f244be6e8ea4aba139434ada0698743;p=users%2Fdwmw2%2Flinux.git

usb: gadget: f_fs: Add compat_ioctl to epfiles

This allows 32 bit owners of ffs endpoints to
make ioctls into a 64 bit kernel.

All of the current epfile ioctls can be handled
with the same struct definitions as regular
ioctl.

Acked-by: Michał Nazarewicz <mina86@mina86.com>
Signed-off-by: Jerry Zhang <zhangjerry@google.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 0294e4f188739..199d257000505 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -1266,6 +1266,14 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code,
 	return ret;
 }
 
+#ifdef CONFIG_COMPAT
+static long ffs_epfile_compat_ioctl(struct file *file, unsigned code,
+		unsigned long value)
+{
+	return ffs_epfile_ioctl(file, code, value);
+}
+#endif
+
 static const struct file_operations ffs_epfile_operations = {
 	.llseek =	no_llseek,
 
@@ -1274,6 +1282,9 @@ static const struct file_operations ffs_epfile_operations = {
 	.read_iter =	ffs_epfile_read_iter,
 	.release =	ffs_epfile_release,
 	.unlocked_ioctl =	ffs_epfile_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = ffs_epfile_compat_ioctl,
+#endif
 };