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  1. 30 10月, 2010 1 次提交
    • D
      USB: Add EHCI and OHCH glue for OCTEON II SOCs. · 1643accd
      由 David Daney 提交于 
      The OCTEON II SOC has USB EHCI and OHCI controllers connected directly
to the internal I/O bus.  This patch adds the necessary 'glue' logic
to allow ehci-hcd and ohci-hcd drivers to work on OCTEON II.

The OCTEON normally runs big-endian, and the ehci/ohci internal
registers have host endianness, so we need to select
USB_EHCI_BIG_ENDIAN_MMIO.

The ehci and ohci blocks share a common clocking and PHY
infrastructure.  Initialization of the host controller and PHY clocks
is common between the two and is factored out into the
octeon2-common.c file.

Setting of USB_ARCH_HAS_OHCI and USB_ARCH_HAS_EHCI is done in
arch/mips/Kconfig in a following patch.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
To: linux-usb@vger.kernel.org
To: dbrownell@users.sourceforge.net
Patchwork: http://patchwork.linux-mips.org/patch/1675/Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      1643accd
  3. 23 10月, 2010 29 次提交
  5. 15 10月, 2010 1 次提交
    • A
      llseek: automatically add .llseek fop · 6038f373
      由 Arnd Bergmann 提交于 
      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: NArnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
      6038f373
  7. 08 10月, 2010 1 次提交
  9. 29 9月, 2010 8 次提交
    • D
      pcmcia: move driver name to struct pcmcia_driver · 2e9b981a
      由 Dominik Brodowski 提交于 
      Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      2e9b981a
    • D
      pcmcia: remove the "Finally, report what we've done" message · 1cc745d1
      由 Dominik Brodowski 提交于 
      Remove this unnecessary message -- this info is either available
in sysfs or by enabling dynamic debug from the PCMCIA core.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: linux-usb@vger.kernel.org
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      1cc745d1
    • D
      pcmcia: use autoconfiguration feature for ioports and iomem · 00990e7c
      由 Dominik Brodowski 提交于 
      When CONF_AUTO_SET_IO or CONF_AUTO_SET_IOMEM are set, the corresponding
fields in struct pcmcia_device *p_dev->resource[0,1,2] are set
accordinly. Drivers wishing to override certain settings may do so in
the callback function, but they no longer need to parse the CIS entries
stored in cistpl_cftable_entry_t themselves.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: linux-bluetooth@vger.kernel.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-scsi@vger.kernel.org
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      00990e7c
    • D
      pcmcia: introduce autoconfiguration feature · 440eed43
      由 Dominik Brodowski 提交于 
      Introduce an autoconfiguration feature to set certain values in
pcmcia_loop_config(), instead of copying the same code over and over
in each PCMCIA driver. At first, introduce the following options:

CONF_AUTO_CHECK_VCC	check or matching Vcc entry
CONF_AUTO_SET_VPP	set Vpp
CONF_AUTO_AUDIO		enable the speaker line

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-scsi@vger.kernel.org
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> (for drivers/bluetooth)
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      440eed43
    • D
      pcmcia: convert pcmcia_request_configuration to pcmcia_enable_device · 1ac71e5a
      由 Dominik Brodowski 提交于 
      pcmcia_enable_device() now replaces pcmcia_request_configuration().
Instead of config_req_t, all necessary flags are either passed as
a parameter to pcmcia_enable_device(), or (in rare circumstances)
set in struct pcmcia_device -> flags.

With the last remaining user of include/pcmcia/cs.h gone, remove
all references.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-scsi@vger.kernel.org
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> (for drivers/bluetooth)
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      1ac71e5a
    • D
      pcmcia: move config_{base,index,regs} to struct pcmcia_device · 7feabb64
      由 Dominik Brodowski 提交于 
      Several drivers prefer to explicitly set config_{base,index,regs},
formerly known as ConfigBase, ConfigIndex and Present. Instead of
passing these values inside config_req_t, store it in struct
pcmcia_device.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-scsi@vger.kernel.org
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> (for drivers/bluetooth)
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      7feabb64
    • D
      pcmcia: simplify IntType · 37979e15
      由 Dominik Brodowski 提交于 
      IntType was only set to INT_MEMORY (driver pcmciamtd) or INT_MEMORY_AND_IO
(all other drivers). As this flags seems to relate to ioport access, make
it conditional to the driver having requested IO port access. There are two
drivers which do not request IO ports, but did set INT_MEMORY_AND_IO:
ray_cs and b43. For those, we consistently only set INT_MEMORY in future.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-scsi@vger.kernel.org
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> (for drivers/bluetooth)
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      37979e15
    • D
      pcmcia: move Vpp setup to struct pcmcia_device · e8405f0f
      由 Dominik Brodowski 提交于 
      Some drivers prefer to explicitly set Vpp. Instead of passing the
voltage inside config_req_t, store it in struct pcmcia_device.

CC: linux-ide@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-mtd@lists.infradead.org
CC: linux-wireless@vger.kernel.org
CC: linux-serial@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: linux-scsi@vger.kernel.org
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> (for drivers/bluetooth)
Tested-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      e8405f0f