config USB_SISUSBVGA tristate "USB 2.0 SVGA dongle support (Net2280/SiS315)" depends on (USB_MUSB_HDRC || USB_EHCI_HCD) select FONT_SUPPORT if USB_SISUSBVGA_CON ---help--- Say Y here if you intend to attach a USB2VGA dongle based on a Net2280 and a SiS315 chip. Note that this device requires a USB 2.0 host controller. It will not work with USB 1.x controllers. To compile this driver as a module, choose M here; the module will be called sisusbvga. If unsure, say N. config USB_SISUSBVGA_CON bool "Text console and mode switching support" if USB_SISUSBVGA depends on VT select FONT_8x16 ---help--- Say Y here if you want a VGA text console via the USB dongle or want to support userland applications that utilize the driver's display mode switching capabilities. Note that this console supports VGA/EGA text mode only. By default, the console part of the driver will not kick in when the driver is initialized. If you want the driver to take over one or more of the consoles, you need to specify the number of the first and last consoles (starting at 1) as driver parameters. For example, if the driver is compiled as a module: modprobe sisusbvga first=1 last=5 If you use hotplug, add this to your modutils config files with the "options" keyword, such as eg. options sisusbvga first=1 last=5 If the driver is compiled into the kernel image, the parameters must be given in the kernel command like, such as sisusbvga.first=1 sisusbvga.last=5 >
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /drivers/usb/phy/phy-omap-otg.c
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/phy/phy-omap-otg.c')