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Subject[PATCH 4.9 039/109] usb: gadget: f_fs: Fix ExtCompat descriptor validation
Date
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Pelletier <plr.vincent@gmail.com>


[ Upstream commit 354bc45bf329494ef6051f3229ef50b9e2a7ea2a ]

Reserved1 is documented as expected to be set to 0, but this test fails
when it it set to 0. Reverse the condition.

Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_fs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -2263,7 +2263,7 @@ static int __ffs_data_do_os_desc(enum ff

if (len < sizeof(*d) ||
d->bFirstInterfaceNumber >= ffs->interfaces_count ||
- !d->Reserved1)
+ d->Reserved1)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(d->Reserved2); ++i)
if (d->Reserved2[i])

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