From: Jim Lin <jilin@nvidia.com>
To: <balbi@kernel.org>
Cc: <linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Jim Lin <jilin@nvidia.com>
Subject: [PATCH v2 1/1] usb: gadget: f_fs: Fix wrong check on reserved1 of OS_DESC_EXT_COMPAT
Date: Fri, 20 May 2016 18:13:19 +0800 [thread overview]
Message-ID: <1463739199-1608-1-git-send-email-jilin@nvidia.com> (raw)
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>
---
v2: Rewording on commit log. Original title is
usb: gadget: f_fs: Fix kernel panic for SuperSpeed
drivers/usb/gadget/function/f_fs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 15b648c..bd969ef 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])
--
1.9.1
reply other threads:[~2016-05-20 10:13 UTC|newest]
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