Commit graph

23 commits

Author SHA1 Message Date
Greg Kroah-Hartman
ea3398a1ae Staging: Merge 2.6.37-rc5 into staging-next
This was done to handle a number of conflicts in the batman-adv
and winbond drivers properly.  It also now allows us to fix up the sysfs
attributes properly that were not in the .37 release due to them being
only in this tree at the time.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-12-07 10:47:56 -08:00
Greg Kroah-Hartman
2a767fda5d Staging: frontier: fix up my fixup for some sysfs attribute permissions
They should be writable by root, not readable.
Doh, stupid me with the wrong flags.

Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Cc: David Taht <d@teklibre.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-18 11:27:18 -08:00
Greg Kroah-Hartman
3bad28ec00 Staging: frontier: fix up some sysfs attribute permissions
They should not be writable by any user

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Taht <d@teklibre.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-16 11:18:33 -08:00
Mauro Schilman
9dd5f27144 Staging: frontier: fix space and * coding style issues in alphatrack.c
This is a patch to the alphatrack.c file that fixes up a space warning
and a space after '*' warning found by the checkpatch.pl tool

Signed-off-by: Mauro Schilman <maurito.s@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-09 15:55:56 -08:00
Greg Kroah-Hartman
e4c5bf8e3d Merge 'staging-next' to Linus's tree
This merges the staging-next tree to Linus's tree and resolves
some conflicts that were present due to changes in other trees that were
affected by files here.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-28 09:44:56 -07:00
Gustavo Silva
bd384c2722 Staging: frontier: fix coding style issues in tranzport.c
This is a patch to the tranzport.c file that fixes up the following issue

WARNING: please, no space for starting a line	x 23

Signed-off-by: Gustavo Silva <silvagustavo@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-19 10:54:51 -07:00
Arnd Bergmann
6038f373a3 llseek: automatically add .llseek fop
All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.

The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.

New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time.  Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.

The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.

Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.

Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.

===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
//   but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{
<+...
nonseekable_open(...)
...+>
}

@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{
<+...
(
nonseekable_open(...)
|
nested_open(...)
)
...+>
}

@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
<+...
(
   *off = E
|
   *off += E
|
   func(..., off, ...)
|
   E = *off
)
...+>
}

@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}

@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
<+...
(
  *off = E
|
  *off += E
|
  func(..., off, ...)
|
  E = *off
)
...+>
}

@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}

@ fops0 @
identifier fops;
@@
struct file_operations fops = {
 ...
};

@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
 .llseek = llseek_f,
...
};

@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
 .read = read_f,
...
};

@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
 .write = write_f,
...
};

@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
 .open = open_f,
...
};

// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
...  .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};

@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
...  .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};

// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
...  .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};

// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};

// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};

@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+	.llseek = default_llseek, /* write accesses f_pos */
};

// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////

@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
 .write = write_f,
 .read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};

@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};

@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};

@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
2010-10-15 15:53:27 +02:00
Uwe Kleine-König
9b0131cb24 staging/trivial: fix typos concerning "initiali[zs]e"
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-09-04 21:23:26 -07:00
Eli Lindsey
3504e0c878 staging: frontier: switch semaphores to mutexes
This patch changes the use of semaphores in alphatrack.c and tranzport.c to
mutexes at the suggestion of checkpatch.pl

Signed-off-by: Eli Lindsey <eli@siliconsprawl.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-11 11:35:33 -07:00
Eli Lindsey
b9eafe4380 staging: frontier: switch to strict_strtoul in tranzport.c
This is a patch to tranzport.c that changes a use of simple_strtoul to
strict_strtoul at the suggestion of checkpatch.pl

Signed-off-by: Eli Lindsey <eli@siliconsprawl.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-11 11:35:33 -07:00
Michael Tate
1e1d25cb0d staging: frontier: Fix coding style issues in 2 files.
This patch removes unecessary whitespace before quoted newlines
in two files.
One warning in each file remains unresolved.

Signed-off-by: Michael Tate <michael.tate@wanadoo.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-11 11:35:33 -07:00
Németh Márton
a457732b83 staging: make USB device id constant
The id_table field of the struct usb_device_id is constant in <linux/usb.h>
so it is worth to make the initialization data also constant.

The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
	struct I1 {
	  ...
	  const struct I2 *x;
	  ...
	};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
	struct I1 y = {
	  .x = E,
	};
@c@
identifier r.I2;
identifier s.E;
@@
	const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+	const
	struct I2 E[] = ...;
// </smpl>

Signed-off-by: Németh Márton <nm127@freemail.hu>
Cc: Julia Lawall <julia@diku.dk>
Cc: cocci@diku.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-03 16:42:42 -08:00
Huang Weiyi
727cbafa51 Staging: remove unused #include <linux/version.h>'s
Remove unused #include <linux/version.h>'s.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-19 11:00:36 -07:00
David Täht
dab8c35990 Staging: frontier: Remove unused components of the alphatrack/tranzport sysfs interface.
Signed-off-by: David Täht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-03 14:53:32 -07:00
David Täht
a07998529b Staging: frontier: Make checkpatch.pl happy with alphatrack.h
Signed-off-by: David Täht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-03 14:53:32 -07:00
David Täht
b3bc12dac7 Staging: frontier: Updated documentation
Signed-off-by: David Täht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-03 14:53:32 -07:00
David Täht
7f84642b2f Staging: frontier: removed now unused frontier_compat.h file
Signed-off-by: David Täht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

index 00450e6..0000000
2009-04-03 14:53:32 -07:00
David Täht
f6a0ccadd1 Staging: frontier: Make checkpatch.pl much happier with alphatrack driver
Signed-off-by: David Täht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-03 14:53:31 -07:00
David Täht
7c68d6b717 Staging: frontier: Make checkpatch.pl considerably happier with tranzport driver.
Signed-off-by: David Täht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-03 14:53:31 -07:00
Harvey Harrison
d599edcaea staging: __FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-07 15:48:54 -08:00
Greg Kroah-Hartman
37bcd24b84 Staging: frontier: fix compiler warnings
Basically remove unused code and variables still hanging around.

Cc: David Taht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-06 13:52:36 -08:00
Greg Kroah-Hartman
006ef0ec96 Staging: frontier: remove unused alphatrack_sysfs.c file
The alphatrack_sysfs.c is unused, so remove it.

Cc: David Taht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-06 13:52:36 -08:00
David Taht
8da3dc2875 Staging: add frontier tranzport and alphatrack drivers
Adds the tranzport and alphatrack drivers to the staging tree.

Cc: David Taht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-06 13:52:36 -08:00