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Commit a9b9e81c authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge branch 'linus' into x86/memory-corruption-check

parents a8b71a28 fd048088
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@@ -96,4 +96,6 @@ Tejun Heo <htejun@gmail.com>
Thomas Graf <tgraf@suug.ch>
Thomas Graf <tgraf@suug.ch>
Tony Luck <tony.luck@intel.com>
Tony Luck <tony.luck@intel.com>
Tsuneo Yoshioka <Tsuneo.Yoshioka@f-secure.com>
Tsuneo Yoshioka <Tsuneo.Yoshioka@f-secure.com>
Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
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@@ -251,8 +251,6 @@ mono.txt
	- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.
	- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.
moxa-smartio
moxa-smartio
	- file with info on installing/using Moxa multiport serial driver.
	- file with info on installing/using Moxa multiport serial driver.
mtrr.txt
	- how to use PPro Memory Type Range Registers to increase performance.
mutex-design.txt
mutex-design.txt
	- info on the generic mutex subsystem.
	- info on the generic mutex subsystem.
namespaces/
namespaces/
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What:		/sys/class/gpio/
Date:		July 2008
KernelVersion:	2.6.27
Contact:	David Brownell <dbrownell@users.sourceforge.net>
Description:

  As a Kconfig option, individual GPIO signals may be accessed from
  userspace.  GPIOs are only made available to userspace by an explicit
  "export" operation.  If a given GPIO is not claimed for use by
  kernel code, it may be exported by userspace (and unexported later).
  Kernel code may export it for complete or partial access.

  GPIOs are identified as they are inside the kernel, using integers in
  the range 0..INT_MAX.  See Documentation/gpio.txt for more information.

    /sys/class/gpio
	/export ... asks the kernel to export a GPIO to userspace
	/unexport ... to return a GPIO to the kernel
	/gpioN ... for each exported GPIO #N
	    /value ... always readable, writes fail for input GPIOs
	    /direction ... r/w as: in, out (default low); write: high, low
	/gpiochipN ... for each gpiochip; #N is its first GPIO
	    /base ... (r/o) same as N
	    /label ... (r/o) descriptive, not necessarily unique
	    /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1)
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@@ -337,7 +337,7 @@ With scatterlists, you use the resulting mapping like this:
	int i, count = dma_map_sg(dev, sglist, nents, direction);
	int i, count = dma_map_sg(dev, sglist, nents, direction);
	struct scatterlist *sg;
	struct scatterlist *sg;


	for (i = 0, sg = sglist; i < count; i++, sg++) {
	for_each_sg(sglist, sg, count, i) {
		hw_address[i] = sg_dma_address(sg);
		hw_address[i] = sg_dma_address(sg);
		hw_len[i] = sg_dma_len(sg);
		hw_len[i] = sg_dma_len(sg);
	}
	}
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@@ -740,7 +740,7 @@ failure can be determined by:
	dma_addr_t dma_handle;
	dma_addr_t dma_handle;


	dma_handle = pci_map_single(pdev, addr, size, direction);
	dma_handle = pci_map_single(pdev, addr, size, direction);
	if (pci_dma_mapping_error(dma_handle)) {
	if (pci_dma_mapping_error(pdev, dma_handle)) {
		/*
		/*
		 * reduce current DMA mapping usage,
		 * reduce current DMA mapping usage,
		 * delay and try again later or
		 * delay and try again later or
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