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Prevent conflict with possible new upstream ioctls
before it itself is upstreamed.
Test: None
Change-Id: I10cbc01c25f920a626ea7559e8ca80ee08865333
Signed-off-by: Jerry Zhang <zhangjerry@google.com>
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This creates an ioctl named FUNCTIONFS_ENDPOINT_ALLOC which will
preallocate buffers for a given size. Any reads/writes on that
endpoint below that size will use those buffers instead of allocating
their own. If the endpoint is not active, the buffer will not be
allocated until it becomes active.
Change-Id: I4da517620ed913161ea9e21a31f6b92c9a012b44
Signed-off-by: Jerry Zhang <zhangjerry@google.com>
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This patch introduces ioctl named FUNCTIONFS_ENDPOINT_DESC, which
returns endpoint descriptor to userspace. It works only if function
is active.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Jerry Zhang <zhangjerry@google.com>
Change-Id: I55987bf0c6744327f7763b567b5a2b39c50d18e6
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Allow userspace to pass SuperSpeed descriptors and
handle them in the driver accordingly.
This change doesn't modify existing desc_header and thereby
keeps the ABI changes backward compatible i.e. existing
userspace drivers compiled with old header (functionfs.h)
would continue to work with the updated kernel.
Change-Id: Ic27035fdef2a83828024348d75be1518e9f8c5c6
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
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Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
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