d93acbcacd
udc-core learned that it shouldn't use invalid pointers when unloading a gadget driver. net2272 and net2280 got a fix for a regression caused by the udc_start/udc_stop conversion. We're defining a static inline no-op for otg_ulpi_create() to prevent build errors when that driver isn't enabled. FunctionFS got a fix for an off-by-one error when binding and unbinding instances of FunctionFS. MUSB learned that it shouldn't try to unmap buffers which weren't previously mapped. f_rndis got a fix for a possible NULL pointer dereference in a debugging message code. MUSB's DA8xx glue layer got a build fix due to a typo. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJRSu6dAAoJEIaOsuA1yqREdA8P/R4iKKZ3H23xfSJirQaEYADY ejeCefHeev+QFXcRVtkhTMGV1Kt6ZLAJ19wrTT3xdENjUbBZdx+9GzN/bUsr5yAO SjBFSzVkbbELn4es+hbUPIJgGDa+/DOs9nLgDLlzdaaWbbyvpsl5cbokGAYFgstn xy/36e5wctm066cZzG78+cewtuvKxXHANhZt7tTNLWfu/ARaBfiDoYH+fhobJwzq poZ47hZPxPE5nn9ppB16jtvpAFAXT8AQZg4SGA2yIRKXkExNNCOUh2xxIHnmWdI2 k3Qp0YUlCUsoCifFu6k0vhJBxctbi9AVTnnBJXWokw4tX4bVt9uglDkXXZdOfQ/y vA3j+lY9rSjuBixmNjVlvwP77qyR85ILFF9WDhwsGrSNJyeUyV/Fmy2s7sRZFLjL X6ziN2Tj/3gC6uaO5Rbgmw7aURy8UyML/byBVq/uRMTu0NJPGxnC5xM2WPmGl9nz dWP2mcd193rxys8GYH7G6zz4MJ3WFyPgJ0VszsT/kGI/rL0ij1xTuKnw7zsP38Mk RINfeBcY2Msi0Mt4KnXJ8vgSIyI3XOwVCebKCAIdc4rktVAryKCJTjtXMlHD4niI rTztkXPkM4bcEiqa29FIhGkiYsQfQ66N8a9RbH6nWZSvhbgs1p8Y721FYfTKt+54 oTvm35fUgthYTtpig5bN =wGIr -----END PGP SIGNATURE----- Merge tag 'fixes-for-v3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus Felipe writes: usb: fixes for v3.9-rc4 udc-core learned that it shouldn't use invalid pointers when unloading a gadget driver. net2272 and net2280 got a fix for a regression caused by the udc_start/udc_stop conversion. We're defining a static inline no-op for otg_ulpi_create() to prevent build errors when that driver isn't enabled. FunctionFS got a fix for an off-by-one error when binding and unbinding instances of FunctionFS. MUSB learned that it shouldn't try to unmap buffers which weren't previously mapped. f_rndis got a fix for a possible NULL pointer dereference in a debugging message code. MUSB's DA8xx glue layer got a build fix due to a typo.
To understand all the Linux-USB framework, you'll use these resources:
* This source code. This is necessarily an evolving work, and
includes kerneldoc that should help you get a current overview.
("make pdfdocs", and then look at "usb.pdf" for host side and
"gadget.pdf" for peripheral side.) Also, Documentation/usb has
more information.
* The USB 2.0 specification (from www.usb.org), with supplements
such as those for USB OTG and the various device classes.
The USB specification has a good overview chapter, and USB
peripherals conform to the widely known "Chapter 9".
* Chip specifications for USB controllers. Examples include
host controllers (on PCs, servers, and more); peripheral
controllers (in devices with Linux firmware, like printers or
cell phones); and hard-wired peripherals like Ethernet adapters.
* Specifications for other protocols implemented by USB peripheral
functions. Some are vendor-specific; others are vendor-neutral
but just standardized outside of the www.usb.org team.
Here is a list of what each subdirectory here is, and what is contained in
them.
core/ - This is for the core USB host code, including the
usbfs files and the hub class driver ("khubd").
host/ - This is for USB host controller drivers. This
includes UHCI, OHCI, EHCI, and others that might
be used with more specialized "embedded" systems.
gadget/ - This is for USB peripheral controller drivers and
the various gadget drivers which talk to them.
Individual USB driver directories. A new driver should be added to the
first subdirectory in the list below that it fits into.
image/ - This is for still image drivers, like scanners or
digital cameras.
../input/ - This is for any driver that uses the input subsystem,
like keyboard, mice, touchscreens, tablets, etc.
../media/ - This is for multimedia drivers, like video cameras,
radios, and any other drivers that talk to the v4l
subsystem.
../net/ - This is for network drivers.
serial/ - This is for USB to serial drivers.
storage/ - This is for USB mass-storage drivers.
class/ - This is for all USB device drivers that do not fit
into any of the above categories, and work for a range
of USB Class specified devices.
misc/ - This is for all USB device drivers that do not fit
into any of the above categories.