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authorAnton Vorontsov <cbouatmailru@gmail.com>2012-01-10 20:55:11 +0400
committerAnton Vorontsov <cbouatmailru@gmail.com>2012-01-10 20:55:11 +0400
commit913272b3864d6da89c70d9fc2c30ccb57794b369 (patch)
tree4fb0a8ab1b53623d2a8ea200b80a3ace2d271471 /Documentation
parent6cfc2a23540667cff6da6e41d1f1167a9a45aa9a (diff)
parent629bcb4b72d49b3631ae3dd0fe1d345820fadfcc (diff)
Merge git://git.infradead.org/users/cbou/battery-urgent
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-block13
-rw-r--r--Documentation/DocBook/uio-howto.tmpl7
-rw-r--r--Documentation/blockdev/cciss.txt14
-rw-r--r--Documentation/i2c/ten-bit-addresses36
-rw-r--r--Documentation/networking/ip-sysctl.txt2
-rw-r--r--Documentation/serial/serial-rs485.txt14
-rw-r--r--Documentation/sound/alsa/HD-Audio.txt8
7 files changed, 47 insertions, 47 deletions
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
index 2b5d56127fc..c1eb41cb987 100644
--- a/Documentation/ABI/testing/sysfs-block
+++ b/Documentation/ABI/testing/sysfs-block
@@ -206,16 +206,3 @@ Description:
when a discarded area is read the discard_zeroes_data
parameter will be set to one. Otherwise it will be 0 and
the result of reading a discarded area is undefined.
-What: /sys/block/<disk>/alias
-Date: Aug 2011
-Contact: Nao Nishijima <nao.nishijima.xt@hitachi.com>
-Description:
- A raw device name of a disk does not always point a same disk
- each boot-up time. Therefore, users have to use persistent
- device names, which udev creates when the kernel finds a disk,
- instead of raw device name. However, kernel doesn't show those
- persistent names on its messages (e.g. dmesg).
- This file can store an alias of the disk and it would be
- appeared in kernel messages if it is set. A disk can have an
- alias which length is up to 255bytes. Users can use alphabets,
- numbers, "-" and "_" in alias name. This file is writeonce.
diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index 54883de5d5f..ac3d0018140 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -521,6 +521,11 @@ Here's a description of the fields of <varname>struct uio_mem</varname>:
<itemizedlist>
<listitem><para>
+<varname>const char *name</varname>: Optional. Set this to help identify
+the memory region, it will show up in the corresponding sysfs node.
+</para></listitem>
+
+<listitem><para>
<varname>int memtype</varname>: Required if the mapping is used. Set this to
<varname>UIO_MEM_PHYS</varname> if you you have physical memory on your
card to be mapped. Use <varname>UIO_MEM_LOGICAL</varname> for logical
@@ -553,7 +558,7 @@ instead to remember such an address.
</itemizedlist>
<para>
-Please do not touch the <varname>kobj</varname> element of
+Please do not touch the <varname>map</varname> element of
<varname>struct uio_mem</varname>! It is used by the UIO framework
to set up sysfs files for this mapping. Simply leave it alone.
</para>
diff --git a/Documentation/blockdev/cciss.txt b/Documentation/blockdev/cciss.txt
index 71464e09ec1..b79d0a13e7c 100644
--- a/Documentation/blockdev/cciss.txt
+++ b/Documentation/blockdev/cciss.txt
@@ -98,14 +98,12 @@ You must enable "SCSI tape drive support for Smart Array 5xxx" and
"SCSI support" in your kernel configuration to be able to use SCSI
tape drives with your Smart Array 5xxx controller.
-Additionally, note that the driver will not engage the SCSI core at init
-time. The driver must be directed to dynamically engage the SCSI core via
-the /proc filesystem entry which the "block" side of the driver creates as
-/proc/driver/cciss/cciss* at runtime. This is because at driver init time,
-the SCSI core may not yet be initialized (because the driver is a block
-driver) and attempting to register it with the SCSI core in such a case
-would cause a hang. This is best done via an initialization script
-(typically in /etc/init.d, but could vary depending on distribution).
+Additionally, note that the driver will engage the SCSI core at init
+time if any tape drives or medium changers are detected. The driver may
+also be directed to dynamically engage the SCSI core via the /proc filesystem
+entry which the "block" side of the driver creates as
+/proc/driver/cciss/cciss* at runtime. This is best done via a script.
+
For example:
for x in /proc/driver/cciss/cciss[0-9]*
diff --git a/Documentation/i2c/ten-bit-addresses b/Documentation/i2c/ten-bit-addresses
index e9890709c50..cdfe13901b9 100644
--- a/Documentation/i2c/ten-bit-addresses
+++ b/Documentation/i2c/ten-bit-addresses
@@ -1,22 +1,24 @@
The I2C protocol knows about two kinds of device addresses: normal 7 bit
addresses, and an extended set of 10 bit addresses. The sets of addresses
do not intersect: the 7 bit address 0x10 is not the same as the 10 bit
-address 0x10 (though a single device could respond to both of them). You
-select a 10 bit address by adding an extra byte after the address
-byte:
- S Addr7 Rd/Wr ....
-becomes
- S 11110 Addr10 Rd/Wr
-S is the start bit, Rd/Wr the read/write bit, and if you count the number
-of bits, you will see the there are 8 after the S bit for 7 bit addresses,
-and 16 after the S bit for 10 bit addresses.
+address 0x10 (though a single device could respond to both of them).
-WARNING! The current 10 bit address support is EXPERIMENTAL. There are
-several places in the code that will cause SEVERE PROBLEMS with 10 bit
-addresses, even though there is some basic handling and hooks. Also,
-almost no supported adapter handles the 10 bit addresses correctly.
+I2C messages to and from 10-bit address devices have a different format.
+See the I2C specification for the details.
-As soon as a real 10 bit address device is spotted 'in the wild', we
-can and will add proper support. Right now, 10 bit address devices
-are defined by the I2C protocol, but we have never seen a single device
-which supports them.
+The current 10 bit address support is minimal. It should work, however
+you can expect some problems along the way:
+* Not all bus drivers support 10-bit addresses. Some don't because the
+ hardware doesn't support them (SMBus doesn't require 10-bit address
+ support for example), some don't because nobody bothered adding the
+ code (or it's there but not working properly.) Software implementation
+ (i2c-algo-bit) is known to work.
+* Some optional features do not support 10-bit addresses. This is the
+ case of automatic detection and instantiation of devices by their,
+ drivers, for example.
+* Many user-space packages (for example i2c-tools) lack support for
+ 10-bit addresses.
+
+Note that 10-bit address devices are still pretty rare, so the limitations
+listed above could stay for a long time, maybe even forever if nobody
+needs them to be fixed.
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index cb7f3148035..f049a1ca186 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -20,7 +20,7 @@ ip_no_pmtu_disc - BOOLEAN
default FALSE
min_pmtu - INTEGER
- default 562 - minimum discovered Path MTU
+ default 552 - minimum discovered Path MTU
route/max_size - INTEGER
Maximum number of routes allowed in the kernel. Increase
diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index 079cb3df62c..41c8378c0b2 100644
--- a/Documentation/serial/serial-rs485.txt
+++ b/Documentation/serial/serial-rs485.txt
@@ -97,15 +97,23 @@
struct serial_rs485 rs485conf;
- /* Set RS485 mode: */
+ /* Enable RS485 mode: */
rs485conf.flags |= SER_RS485_ENABLED;
+ /* Set logical level for RTS pin equal to 1 when sending: */
+ rs485conf.flags |= SER_RS485_RTS_ON_SEND;
+ /* or, set logical level for RTS pin equal to 0 when sending: */
+ rs485conf.flags &= ~(SER_RS485_RTS_ON_SEND);
+
+ /* Set logical level for RTS pin equal to 1 after sending: */
+ rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
+ /* or, set logical level for RTS pin equal to 0 after sending: */
+ rs485conf.flags &= ~(SER_RS485_RTS_AFTER_SEND);
+
/* Set rts delay before send, if needed: */
- rs485conf.flags |= SER_RS485_RTS_BEFORE_SEND;
rs485conf.delay_rts_before_send = ...;
/* Set rts delay after send, if needed: */
- rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
rs485conf.delay_rts_after_send = ...;
/* Set this flag if you want to receive data even whilst sending data */
diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt
index 03e2771ddee..91fee3b45fb 100644
--- a/Documentation/sound/alsa/HD-Audio.txt
+++ b/Documentation/sound/alsa/HD-Audio.txt
@@ -579,7 +579,7 @@ Development Tree
~~~~~~~~~~~~~~~~
The latest development codes for HD-audio are found on sound git tree:
-- git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
+- git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
The master branch or for-next branches can be used as the main
development branches in general while the HD-audio specific patches
@@ -594,7 +594,7 @@ is, installed via the usual spells: configure, make and make
install(-modules). See INSTALL in the package. The snapshot tarballs
are found at:
-- ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/
+- ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Sending a Bug Report
@@ -696,7 +696,7 @@ via hda-verb won't change the mixer value.
The hda-verb program is found in the ftp directory:
-- ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/misc/
+- ftp://ftp.suse.com/pub/people/tiwai/misc/
Also a git repository is available:
@@ -764,7 +764,7 @@ operation, the jack plugging simulation, etc.
The package is found in:
-- ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/misc/
+- ftp://ftp.suse.com/pub/people/tiwai/misc/
A git repository is available: