...@linuxfoundation.org; linux-usb@vger.kernel.org;
linux-ker...@vger.kernel.org; david.a.co...@linux.intel.com
Subject: Re: [PATCH v2] usb: gadget: return the right length in
ffs_epfile_io()
On Tue, Mar 04, 2014 at 08:53:40PM +0100, Michal Nazarewicz wrote:
On 03/04/2014 10:34 AM
Hello.
On 03/04/2014 10:34 AM, Chuansheng Liu wrote:
When the request length is aligned to maxpacketsize, sometimes
the return length ret the user space requested len.
At that time, we will use min_t(size_t, ret, len) to limit the
size in case of user data buffer overflow.
But we need
On Tue, Mar 04, 2014 at 08:01:15PM +0300, Sergei Shtylyov wrote:
Hello.
On 03/04/2014 10:34 AM, Chuansheng Liu wrote:
When the request length is aligned to maxpacketsize, sometimes
the return length ret the user space requested len.
At that time, we will use min_t(size_t, ret, len) to
On 03/04/2014 10:34 AM, Chuansheng Liu wrote:
@@ -845,12 +845,14 @@ static ssize_t ffs_epfile_io(struct file *file,
struct ffs_io_data *io_data)
* we may end up with more data then user space has
* space for.
*/
-
On Tue, Mar 04, 2014 at 08:53:40PM +0100, Michal Nazarewicz wrote:
On 03/04/2014 10:34 AM, Chuansheng Liu wrote:
@@ -845,12 +845,14 @@ static ssize_t ffs_epfile_io(struct file *file,
struct ffs_io_data *io_data)
* we may end up with more data then user space
...@vger.kernel.org; david.a.co...@linux.intel.com
Subject: Re: [PATCH v2] usb: gadget: return the right length in
ffs_epfile_io()
On Tue, Mar 04, 2014 at 08:53:40PM +0100, Michal Nazarewicz wrote:
On 03/04/2014 10:34 AM, Chuansheng Liu wrote:
@@ -845,12 +845,14 @@ static ssize_t ffs_epfile_io(struct file
When the request length is aligned to maxpacketsize, sometimes
the return length ret the user space requested len.
At that time, we will use min_t(size_t, ret, len) to limit the
size in case of user data buffer overflow.
But we need return the min_t(size_t, ret, len) to tell the user
space
