Merge commit 'v2.6.34-rc7' into oprofile (7c224a03) · Commits · e / devices / android_kernel_oneplus_sm7250

Documentation/DocBook/libata.tmpl

+16 −33

Original line number	Original line	Diff line number	Diff line
	@@ -107,10 +107,6 @@ void (dev_config) (struct ata_port , struct ata_device *);
	issue of SET FEATURES - XFER MODE, and prior to operation.		issue of SET FEATURES - XFER MODE, and prior to operation.
	</para>		</para>
	<para>		<para>
	Called by ata_device_add() after ata_dev_identify() determines
	a device is present.
	</para>
	<para>
	This entry may be specified as NULL in ata_port_operations.		This entry may be specified as NULL in ata_port_operations.
	</para>		</para>

	@@ -154,8 +150,8 @@ unsigned int (mode_filter) (struct ata_port , struct ata_device *, unsigned in

	<sect2><title>Taskfile read/write</title>		<sect2><title>Taskfile read/write</title>
	<programlisting>		<programlisting>
	void (tf_load) (struct ata_port ap, struct ata_taskfile *tf);		void (sff_tf_load) (struct ata_port ap, struct ata_taskfile *tf);
	void (tf_read) (struct ata_port ap, struct ata_taskfile *tf);		void (sff_tf_read) (struct ata_port ap, struct ata_taskfile *tf);
	</programlisting>		</programlisting>

	<para>		<para>
	@@ -164,36 +160,35 @@ void (tf_read) (struct ata_port ap, struct ata_taskfile *tf);
	hardware registers / DMA buffers, to obtain the current set of		hardware registers / DMA buffers, to obtain the current set of
	taskfile register values.		taskfile register values.
	Most drivers for taskfile-based hardware (PIO or MMIO) use		Most drivers for taskfile-based hardware (PIO or MMIO) use
	ata_tf_load() and ata_tf_read() for these hooks.		ata_sff_tf_load() and ata_sff_tf_read() for these hooks.
	</para>		</para>

	</sect2>		</sect2>

	<sect2><title>PIO data read/write</title>		<sect2><title>PIO data read/write</title>
	<programlisting>		<programlisting>
	void (data_xfer) (struct ata_device , unsigned char *, unsigned int, int);		void (sff_data_xfer) (struct ata_device , unsigned char *, unsigned int, int);
	</programlisting>		</programlisting>

	<para>		<para>
	All bmdma-style drivers must implement this hook. This is the low-level		All bmdma-style drivers must implement this hook. This is the low-level
	operation that actually copies the data bytes during a PIO data		operation that actually copies the data bytes during a PIO data
	transfer.		transfer.
	Typically the driver		Typically the driver will choose one of ata_sff_data_xfer_noirq(),
	will choose one of ata_pio_data_xfer_noirq(), ata_pio_data_xfer(), or		ata_sff_data_xfer(), or ata_sff_data_xfer32().
	ata_mmio_data_xfer().
	</para>		</para>

	</sect2>		</sect2>

	<sect2><title>ATA command execute</title>		<sect2><title>ATA command execute</title>
	<programlisting>		<programlisting>
	void (exec_command)(struct ata_port ap, struct ata_taskfile *tf);		void (sff_exec_command)(struct ata_port ap, struct ata_taskfile *tf);
	</programlisting>		</programlisting>

	<para>		<para>
	causes an ATA command, previously loaded with		causes an ATA command, previously loaded with
	->tf_load(), to be initiated in hardware.		->tf_load(), to be initiated in hardware.
	Most drivers for taskfile-based hardware use ata_exec_command()		Most drivers for taskfile-based hardware use ata_sff_exec_command()
	for this hook.		for this hook.
	</para>		</para>

	@@ -218,8 +213,8 @@ command.

	<sect2><title>Read specific ATA shadow registers</title>		<sect2><title>Read specific ATA shadow registers</title>
	<programlisting>		<programlisting>
	u8 (check_status)(struct ata_port ap);		u8 (sff_check_status)(struct ata_port ap);
	u8 (check_altstatus)(struct ata_port ap);		u8 (sff_check_altstatus)(struct ata_port ap);
	</programlisting>		</programlisting>

	<para>		<para>
	@@ -227,20 +222,14 @@ u8 (check_altstatus)(struct ata_port ap);
	hardware. On some hardware, reading the Status register has		hardware. On some hardware, reading the Status register has
	the side effect of clearing the interrupt condition.		the side effect of clearing the interrupt condition.
	Most drivers for taskfile-based hardware use		Most drivers for taskfile-based hardware use
	ata_check_status() for this hook.		ata_sff_check_status() for this hook.
	</para>
	<para>
	Note that because this is called from ata_device_add(), at
	least a dummy function that clears device interrupts must be
	provided for all drivers, even if the controller doesn't
	actually have a taskfile status register.
	</para>		</para>

	</sect2>		</sect2>

	<sect2><title>Select ATA device on bus</title>		<sect2><title>Select ATA device on bus</title>
	<programlisting>		<programlisting>
	void (dev_select)(struct ata_port ap, unsigned int device);		void (sff_dev_select)(struct ata_port ap, unsigned int device);
	</programlisting>		</programlisting>

	<para>		<para>
	@@ -251,9 +240,7 @@ void (dev_select)(struct ata_port ap, unsigned int device);
	</para>		</para>
	<para>		<para>
	Most drivers for taskfile-based hardware use		Most drivers for taskfile-based hardware use
	ata_std_dev_select() for this hook. Controllers which do not		ata_sff_dev_select() for this hook.
	support second drives on a port (such as SATA contollers) will
	use ata_noop_dev_select().
	</para>		</para>

	</sect2>		</sect2>
	@@ -441,13 +428,13 @@ void (irq_clear) (struct ata_port );
	to struct ata_host_set.		to struct ata_host_set.
	</para>		</para>
	<para>		<para>
	Most legacy IDE drivers use ata_interrupt() for the		Most legacy IDE drivers use ata_sff_interrupt() for the
	irq_handler hook, which scans all ports in the host_set,		irq_handler hook, which scans all ports in the host_set,
	determines which queued command was active (if any), and calls		determines which queued command was active (if any), and calls
	ata_host_intr(ap,qc).		ata_sff_host_intr(ap,qc).
	</para>		</para>
	<para>		<para>
	Most legacy IDE drivers use ata_bmdma_irq_clear() for the		Most legacy IDE drivers use ata_sff_irq_clear() for the
	irq_clear() hook, which simply clears the interrupt and error		irq_clear() hook, which simply clears the interrupt and error
	flags in the DMA status register.		flags in the DMA status register.
	</para>		</para>
	@@ -496,10 +483,6 @@ void (host_stop) (struct ata_host_set host_set);
	data from port at this time.		data from port at this time.
	</para>		</para>
	<para>		<para>
	Many drivers use ata_port_stop() as this hook, which frees the
	PRD table.
	</para>
	<para>
	->host_stop() is called after all ->port_stop() calls		->host_stop() is called after all ->port_stop() calls
	have completed. The hook must finalize hardware shutdown, release DMA		have completed. The hook must finalize hardware shutdown, release DMA
	and other resources, etc.		and other resources, etc.

Documentation/HOWTO

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -234,7 +234,7 @@ process is as follows:
	Linus, usually the patches that have already been included in the		Linus, usually the patches that have already been included in the
	-next kernel for a few weeks. The preferred way to submit big changes		-next kernel for a few weeks. The preferred way to submit big changes
	is using git (the kernel's source management tool, more information		is using git (the kernel's source management tool, more information
	can be found at http://git.or.cz/) but plain patches are also just		can be found at http://git-scm.com/) but plain patches are also just
	fine.		fine.
	- After two weeks a -rc1 kernel is released it is now possible to push		- After two weeks a -rc1 kernel is released it is now possible to push
	only patches that do not include new features that could affect the		only patches that do not include new features that could affect the

Documentation/cgroups/cgroups.txt

+1 −2

Original line number	Original line	Diff line number	Diff line
	@@ -235,8 +235,7 @@ containing the following files describing that cgroup:
	- cgroup.procs: list of tgids in the cgroup. This list is not		- cgroup.procs: list of tgids in the cgroup. This list is not
	guaranteed to be sorted or free of duplicate tgids, and userspace		guaranteed to be sorted or free of duplicate tgids, and userspace
	should sort/uniquify the list if this property is required.		should sort/uniquify the list if this property is required.
	Writing a tgid into this file moves all threads with that tgid into		This is a read-only file, for now.
	this cgroup.
	- notify_on_release flag: run the release agent on exit?		- notify_on_release flag: run the release agent on exit?
	- release_agent: the path to use for release notifications (this file		- release_agent: the path to use for release notifications (this file
	exists in the top cgroup only)		exists in the top cgroup only)

Documentation/feature-removal-schedule.txt

+23 −0

Original line number	Original line	Diff line number	Diff line
	@@ -589,3 +589,26 @@ Why: Useful in 2003, implementation is a hack.
	Generally invoked by accident today.		Generally invoked by accident today.
	Seen as doing more harm than good.		Seen as doing more harm than good.
	Who: Len Brown <len.brown@intel.com>		Who: Len Brown <len.brown@intel.com>

			----------------------------

			What: video4linux /dev/vtx teletext API support
			When: 2.6.35
			Files: drivers/media/video/saa5246a.c drivers/media/video/saa5249.c
			include/linux/videotext.h
			Why: The vtx device nodes have been superseded by vbi device nodes
			for many years. No applications exist that use the vtx support.
			Of the two i2c drivers that actually support this API the saa5249
			has been impossible to use for a year now and no known hardware
			that supports this device exists. The saa5246a is theoretically
			supported by the old mxb boards, but it never actually worked.

			In summary: there is no hardware that can use this API and there
			are no applications actually implementing this API.

			The vtx support still reserves minors 192-223 and we would really
			like to reuse those for upcoming new functionality. In the unlikely
			event that new hardware appears that wants to use the functionality
			provided by the vtx API, then that functionality should be build
			around the sliced VBI API instead.
			Who: Hans Verkuil <hverkuil@xs4all.nl>

Documentation/i2c/writing-clients

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -74,6 +74,11 @@ structure at all. You should use this to keep device-specific data.
	/* retrieve the value */		/* retrieve the value */
	void i2c_get_clientdata(const struct i2c_client client);		void i2c_get_clientdata(const struct i2c_client client);

			Note that starting with kernel 2.6.34, you don't have to set the `data' field
			to NULL in remove() or if probe() failed anymore. The i2c-core does this
			automatically on these occasions. Those are also the only times the core will
			touch this field.


	Accessing the client		Accessing the client
	====================		====================