#
# USB Core configuration
#
config USB_ANNOUNCE_NEW_DEVICES
bool "USB announce new devices"
help
Say Y here if you want the USB core to always announce the
idVendor, idProduct, Manufacturer, Product, and SerialNumber
strings for every new USB device to the syslog. This option is
usually used by distro vendors to help with debugging and to
let users know what specific device was added to the machine
in what location.
If you do not want this kind of information sent to the system
log, or have any doubts about this, say N here.
comment "Miscellaneous USB options"
config USB_DEFAULT_PERSIST
bool "Enable USB persist by default"
default y
help
Say N here if you don't want USB power session persistence
enabled by default. If you say N it will make suspended USB
devices that lose power get reenumerated as if they had been
unplugged, causing any mounted filesystems to be lost. The
persist feature can still be enabled for individual devices
through the power/persist sysfs node. See
Documentation/usb/persist.txt for more info.
If you have any questions about this, say Y here, only say N
if you know exactly what you are doing.
config USB_DYNAMIC_MINORS
bool "Dynamic USB minor allocation"
help
If you say Y here, the USB subsystem will use dynamic minor
allocation for any device that uses the USB major number.
This means that you can have more than 16 of a single type
of device (like USB printers).
If you are unsure about this, say N here.
config USB_OTG
bool "OTG support"
depends on PM
default n
help
The most notable feature of USB OTG is support for a
"Dual-Role" device, which can act as either a device
or a host. The initial role is decided by the type of
plug inserted and can be changed later when two dual
role devices talk to each other.
Select this only if your board has Mini-AB/Micro-AB
connector.
config USB_OTG_WHITELIST
bool "Rely on OTG and EH Targeted Peripherals List"
depends on USB
help
If you say Y here, the "otg_whitelist.h" file will be used as a
product whitelist, so USB peripherals not listed there will be
rejected during enumeration. This behavior is required by the
USB OTG and EH specification for all devices not on your product's
"Targeted Peripherals List". "Embedded Hosts" are likewise
allowed to support only a limited number of peripherals.
config USB_OTG_BLACKLIST_HUB
bool "Disable external hubs"
depends on USB_OTG || EXPERT
help
If you say Y here, then Linux will refuse to enumerate
external hubs. OTG hosts are allowed to reduce hardware
and software costs by not supporting external hubs. So
are "Embedded Hosts" that don't offer OTG support.
config USB_OTG_FSM
tristate "USB 2.0 OTG FSM implementation"
depends on USB && USB_OTG
select USB_PHY
help
Implements OTG Finite State Machine as specified in On-The-Go
and Embedded Host Supplement to the USB Revision 2.0 Specification.
config USB_LEDS_TRIGGER_USBPORT
tristate "USB port LED trigger"
depends on USB && LEDS_TRIGGERS
help
This driver allows LEDs to be controlled by USB events. Enabling this
trigger allows specifying list of USB ports that should turn on LED
when some USB device gets connected.
usbhs/rcar3.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>rcar3.h
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it
clears all the protection bits but leave the PTE valid.
With the Radix MMU, an attempt at executing from such a PTE will
take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G".
It is thus incorrect to treat all such faults as errors. We should
pass them to handle_mm_fault() for autonuma to deal with. The case
of pages that are really not executable is handled by the existing
test for VM_EXEC further down.
That leaves us with catching the kernel attempts at executing user
pages. We can catch that earlier, even before we do find_vma.
It is never valid on powerpc for the kernel to take an exec fault
to begin with. So fold that test with the existing test for the
kernel faulting on kernel addresses to bail out early.
Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>