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authorJim Lin <jilin@nvidia.com>2016-05-20 18:13:19 +0800
committerFelipe Balbi <felipe.balbi@linux.intel.com>2016-05-31 11:13:02 +0300
commit53642399aa71b7c3b15d0305dc54738c4222bb1e (patch)
tree576b380e34175adb1b6f9c0ec5008eb69c64f722 /drivers/usb/gadget/function
parentcc50dc28da9109d585416595fc23ebb2171f3b2f (diff)
usb: gadget: f_fs: Fix wrong check on reserved1 of OS_DESC_EXT_COMPAT
Current __ffs_data_do_os_desc() of f_fs.c will check reserved1 field of OS_DESC_EXT_COMPAT and return -EINVAL if it's 1. But MS OS 1.0 Descriptors http://msdn.microsoft.com/en-us/library/windows/hardware/gg463179.aspx defines that field to be 1. Signed-off-by: Jim Lin <jilin@nvidia.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget/function')
-rw-r--r--drivers/usb/gadget/function/f_fs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index d26eb64e59b6..9ac6e868946d 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -2051,7 +2051,7 @@ static int __ffs_data_do_os_desc(enum ffs_os_desc_type type,
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])