VME: Prevent D16 cycles being split into 8-bit blocks
The memcpy_fromio() and memcpy_toio() functions use the __memcpy() function,
at least on x86. This function carries out transfers smaller than 32 bits as
multiple 8 bit transfers, causing a single (aligned) 16 bit transfer to be
split into 2 8 bit transfers which may not be supported by the target VME
device.
The commit 53059aa05988761a738fa8bc082bbf3c5d4462d1 fixed this for the
ca91cx42, however this was not fixed for the tsi148 at the time. This patch
uses the same algorithm to fix the tsi148.
Anton Vorontsov [Tue, 17 Jul 2012 19:11:12 +0000 (12:11 -0700)]
pstore/ram: Make tracing log versioned
Decoding the binary trace w/ a different kernel might be troublesome
since we convert addresses to symbols. For kernels with minimal changes,
the mappings would probably match, but it's not guaranteed at all.
(But still we could convert the addresses by hand, since we do print
raw addresses.)
If we use modules, the symbols could be loaded at different addresses
from the previously booted kernel, and so this would also fail, but
there's nothing we can do about it.
Also, the binary data format that pstore/ram is using in its ringbuffer
may change between the kernels, so here we too must ensure that we're
running the same kernel.
So, there are two questions really:
1. How to compute the unique kernel tag;
2. Where to store it.
In this patch we're using LINUX_VERSION_CODE, just as hibernation
(suspend-to-disk) does. This way we are protecting from the kernel
version mismatch, making sure that we're running the same kernel
version and patch level. We could use CRC of a symbol table (as
suggested by Tony Luck), but for now let's not be that strict.
And as for storing, we are using a small trick here. Instead of
allocating a dedicated buffer for the tag (i.e. another prz), or
hacking ram_core routines to "reserve" some control data in the
buffer, we are just encoding the tag into the buffer signature
(and XOR'ing it with the actual signature value, so that buffers
not needing a tag can just pass zero, which will result into the
plain old PRZ signature).
Suggested-by: Steven Rostedt <rostedt@goodmis.org> Suggested-by: Tony Luck <tony.luck@intel.com> Suggested-by: Colin Cross <ccross@android.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Tue, 17 Jul 2012 18:37:07 +0000 (11:37 -0700)]
pstore: Headers should include all stuff they use
Headers should really include all the needed prototypes, types, defines
etc. to be self-contained. This is a long-standing issue, but apparently
the new tracing code unearthed it (SMP=n is also a prerequisite):
In file included from fs/pstore/internal.h:4:0,
from fs/pstore/ftrace.c:21:
include/linux/pstore.h:43:15: error: field ‘read_mutex’ has incomplete type
While at it, I also added the following:
linux/types.h -> size_t, phys_addr_t, uXX and friends
linux/spinlock.h -> spinlock_t
linux/errno.h -> Exxxx
linux/time.h -> struct timespec (struct passed by value)
struct module and rs_control forward declaration (passed via pointers).
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'iio-fixes-3.6b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
IIO fixes for elements queued for 3.6 merge window.
3 types of fix here.
1) Incorrect pointer casting via phys_addr_t which causes
trouble on some architectures.
2) request_irq and free_irq dev_id parameters not matching.
3) Inconsistencies in client_data for some i2c devices
(writing one pointer and expecting another later).
Anton Vorontsov [Tue, 10 Jul 2012 00:10:41 +0000 (17:10 -0700)]
pstore: Add persistent function tracing
With this support kernel can save function call chain log into a
persistent ram buffer that can be decoded and dumped after reboot
through pstore filesystem. It can be used to determine what function
was last called before a reset or panic.
We store the log in a binary format and then decode it at read time.
p.s.
Mostly the code comes from trace_persistent.c driver found in the
Android git tree, written by Colin Cross <ccross@android.com>
(according to sign-off history). I reworked the driver a little bit,
and ported it to pstore.
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Tue, 10 Jul 2012 00:10:40 +0000 (17:10 -0700)]
pstore: Introduce write_buf backend callback
For function tracing we need to stop using pstore.buf directly, since
in a tracing callback we can't use spinlocks, and thus we can't safely
use the global buffer.
With write_buf callback, backends no longer need to access pstore.buf
directly, and thus we can pass any buffers (e.g. allocated on stack).
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Tue, 10 Jul 2012 00:10:39 +0000 (17:10 -0700)]
tracing: Fix initialization failure path in tracing_set_tracer()
If tracer->init() fails, current code will leave current_tracer pointing
to an unusable tracer, which at best makes 'current_tracer' report
inaccurate value.
Fix the issue by pointing current_tracer to nop tracer, and only update
current_tracer with the new one after all the initialization succeeds.
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Tue, 10 Jul 2012 00:03:19 +0000 (17:03 -0700)]
pstore/ram: Make ECC size configurable
This is now pretty straightforward: instead of using bool, just pass
an integer. For backwards compatibility ramoops.ecc=1 means 16 bytes
ECC (using 1 byte for ECC isn't much of use anyway).
Anton Vorontsov [Tue, 10 Jul 2012 00:03:18 +0000 (17:03 -0700)]
pstore/ram_core: Get rid of prz->ecc_symsize and prz->ecc_poly
The struct members were never used anywhere outside of
persistent_ram_init_ecc(), so there's actually no need for them
to be in the struct.
If we ever want to make polynomial or symbol size configurable,
it would make more sense to just pass initialized rs_decoder
to the persistent_ram init functions.
staging/rts_pstor: use kthread_run instead doing kthread_create and wake_up_process
with kthread_create we need to call wake_up_process to run the thread,
this can be done using the macro kthread_run, which creates and if thread
creation is succeeded starts the thread by calling wake_up_process,
and also there are two more threads in the rts_pstor, which calls
kthread_run instead calling kthread_create and another call to the
wake_up_process, so with this change the creation of rtsx_scan_thread
will be in consistency with the other control and poll threads.
staging/wlan-ng: use kzalloc rather using kmalloc at create_wlan
instead we would have used kzalloc, so our memory which is allocated will be set to 0.
codepath:
the code path here is prism2sta_probe_usb, calling when ever usb-dev id
and usb-vendor id e.t.c matches with what ever present in the MODULE_DEVICE_TABLE,
and in prism2sta_probe_usb , we call create_wlan, and its called nowhere else...
All the addi driver ttl subdevices use the range table
'range_digital' provided by the comedi core. The boardinfo
value 'pr_TTLRangeList' is not used by the drivers. Remove
the unused range tables and the boardinfo pointer.
The unused range tables don't make sense anyway...
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging/vt6656: coding style fix in BSSvSecondTxData
this function seemed bit more coding style fix...
The following fixes:
remove spaces at start of line and use tabs
use space between if and (
give a space in a multiplication operation
use space after = and another variable/constant
Paul Bolle [Fri, 13 Jul 2012 12:03:42 +0000 (14:03 +0200)]
staging: wlags49_h2: remove vi modelines
Opening drivers/staging/wlags49_h2/dhf.h with vim triggered this
warning:
"drivers/staging/wlags49_h2/dhf.h" 226L, 8428C
Error detected while processing modelines:
line 2:
E518: Unknown option: */
Press ENTER or type command to continue
Since the Linux kernel coding style disallows modelines this invalid
modeline can simply be removed. And since we're touching this file we
might as well remove all vim modelines from this driver.
vim tested only.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: dt282x: remove the outw wrapper macros
The macros 'update_dacsr', 'update_adcsr', and 'update_supcsr' all use
the 'devpriv' macro which uses a local variable of a specific name and
yeilds a pointer derived from that name. They are also just wrappers
around simple 'outw' calls. Remove the macros.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds the data structures needed for proper registration
of OMAP4 chips. This patch includes definitions for these chip versions:
. OMAP4430
. OMAP4460
. OMAP4470
staging: omap-thermal: common code to expose driver to thermal framework
This patch has the common thermal framework support for OMAP
bandgap driver. It includes the zone registration and unregistration,
the cpu cooling and the trip definitions.
The trips definition is essentially one trip for passive cooling
using the generic cpu cooling device and another one for thermal
shutdown. The cpu cooling device is built based on the existing
cpu freq table. The build should be agnostic to omap version,
but relies that cpufreq is up and running by the time the driver
registers the cpu cooling, as it relies on the table walk api
from cpufreq.
staging: OMAP4+: thermal: introduce bandgap temperature sensor
In the System Control Module, OMAP supplies a voltage reference
and a temperature sensor feature that are gathered in the band
gap voltage and temperature sensor (VBGAPTS) module. The band
gap provides current and voltage reference for its internal
circuits and other analog IP blocks. The analog-to-digital
converter (ADC) produces an output value that is proportional
to the silicon temperature.
This patch provides a platform driver which expose this feature.
It is moduled as a MFD child of the System Control Module core
MFD driver.
This driver provides only APIs to access the device properties,
like temperature, thresholds and update rate.
staging: panel: Use pr_err(...) rather than printk(KERN_ERR ...)
-Removed unnecessary OOM messages.
-Removed embedded message prefixes.
-Added __func__ to some pr_err messages.
-Converted printk(KERN_ERR to pr_err
-Refactored split printk strings onto a single line
-Removed the space before the '!'.
staging/sm7xxfb: select sm7xxfb only when CONFIG_PCI is enabled
the sm7xxfb is a pci device, and should depend on the PCI.
And also if we wont' depend on the PCI sub-system, the following warns
will be triggered,
drivers/staging/sm7xxfb/sm7xxfb.c:1061:1: warning: data definition has no type or storage class [enabled by default]
drivers/staging/sm7xxfb/sm7xxfb.c:1061:1: warning: type defaults to 'int' in declaration of 'module_pci_driver' [-Wimplicit-int]
drivers/staging/sm7xxfb/sm7xxfb.c:1061:1: warning: parameter names (without types) in function declaration [enabled by default]
Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Devendra Naga <devendra.aaru@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Teddy Wang <teddy.wang@siliconmotion.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/gdm72xx/gdm_qos.c:198: ERROR: "foo* bar" should be "foo *bar"
drivers/staging/gdm72xx/gdm_qos.c:198: ERROR: "foo* bar" should be "foo *bar"
drivers/staging/gdm72xx/gdm_qos.c:244: WARNING: quoted string split across lines
Javier M. Mellid [Wed, 11 Jul 2012 13:49:36 +0000 (15:49 +0200)]
staging: sm7xxfb: rename sm712vga_setup to sm7xx_vga_setup
This patch renames sm712vga_setup to sm7xx_vga_setup. sm7xx_vga_setup
process command line options in order to get the vga parameter. This
parameter will be the lookup index to match the right vesa mode. It is
chip independent.
Signed-off-by: Javier M. Mellid <jmunhoz@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Javier M. Mellid [Wed, 11 Jul 2012 13:49:35 +0000 (15:49 +0200)]
staging: sm7xxfb: rename smtc_screen_info to smtc_scr_info
This change of name improves readability on sm712_vga_setup and
smtcfb_pci_probe. It is coherent with the name of vars being used on
code while avoiding the use of extra long lines in functions.
Tested with SM712.
Signed-off-by: Javier M. Mellid <jmunhoz@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 11 Jul 2012 12:28:19 +0000 (13:28 +0100)]
staging: comedi: rtd520: add a few comments
H Hartley Sweeten's recent series of patches to clean up the rtd520
driver made some of the register accesses harder to understand. Add a
few comments to provide some clues to the reader.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change the whitespace of the range tables to avoid the > 80
character lines and the ugly line breaks. Convert a couple of
the RANGE() values into the appropriate {UNI,BIP}_RANGE().
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: rtd520: cleanup the "find pci device" code
Use for_each_pci_dev() instead of open-coding the for loop. Create
local variables for the bus and slot options as well as the thisboard
pointer in order to clarify the code. Consolidate the printk's when
a supported board is not found into one dev_warn message.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The macro 'thisboard' relies on a local variable having a specific
name and yeilds a pointer derived from that local variable. Replace
the macro with a local variable where used and use the comedi_board()
helper to get the pointer.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The macro 'devpriv' relies on a local variable having a specific
name and yeilds a pointer derived from that local variable. Replace
the macro with a local variable where used.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writeb'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writeb'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writel'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writel'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writel'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'readl'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writel'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writel'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writel'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writew'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writew'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writew'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro uses the 'devpriv' macro which relies on a local variable
having a specific name. Plus it's just a wrapper around a simple
'writew'. Remove the macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
projects / linux-beck.git / log