linux.git/drivers/usb/core/hcd.c, branch v2.6.25 Linux kernel source tree USB: mark USB drivers as being GPL only 2008-02-01T22:35:07+00:00 Greg Kroah-Hartman gregkh@suse.de 2008-01-25T17:12:21+00:00 782e70c6fc2290a0395850e8e02583b8b62264d8 Over two years ago, the Linux USB developers stated that they believed there was no way to create a USB kernel driver that was not under the GPL. This patch moves the USB apis to enforce that decision. There are no known closed source USB drivers in the wild, so this patch should cause no problems. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Over two years ago, the Linux USB developers stated that they believed
there was no way to create a USB kernel driver that was not under the
GPL.  This patch moves the USB apis to enforce that decision.

There are no known closed source USB drivers in the wild, so this patch
should cause no problems.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: use a real vendor and product id for root hubs 2008-02-01T22:35:06+00:00 Greg Kroah-Hartman gregkh@suse.de 2008-01-28T17:50:12+00:00 667d691ed7a70c9a9fde5b6bd663a5f38326e026 Turns out that a company is out there using the vendor id of 0x0000 in the wild, so use a real vendor/product id for the root hubs. Now that the Linux Foundation has a real vendor id, we use that, and the first product id: 0x1d6b is the vendor id of the Linux Foundation 0x0001 is the product id for Linux 1.1 root hubs 0x0002 is the product id for Linux 2.0 root hubs The usb.ids file has already been updated with these values. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Turns out that a company is out there using the vendor id of 0x0000 in
the wild, so use a real vendor/product id for the root hubs.

Now that the Linux Foundation has a real vendor id, we use that, and the
first product id:
	0x1d6b is the vendor id of the Linux Foundation
		0x0001 is the product id for Linux 1.1 root hubs
		0x0002 is the product id for Linux 2.0 root hubs

The usb.ids file has already been updated with these values.


Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
usb: dma bounce buffer support 2008-02-01T22:35:05+00:00 Magnus Damm magnus.damm@gmail.com 2008-01-23T06:58:35+00:00 b3476675320eda83cf061a686cdc80b76f2bfdc4 usb: dma bounce buffer support V4 This patch adds dma bounce buffer support to the usb core. These buffers can be enabled with the HCD_LOCAL_MEM flag, and they make sure that all data passed to the host controller is allocated using dma_alloc_coherent(). Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
usb: dma bounce buffer support V4

This patch adds dma bounce buffer support to the usb core. These buffers
can be enabled with the HCD_LOCAL_MEM flag, and they make sure that all data
passed to the host controller is allocated using dma_alloc_coherent().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: Convert from class_device to device for USB core 2008-02-01T22:34:46+00:00 Tony Jones tonyj@suse.de 2007-09-11T21:07:31+00:00 5a3201b2809a9f7bcda8413c445483f5b5e490a3 Convert from class_device to device for drivers/usb/core. Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Convert from class_device to device for drivers/usb/core.

Signed-off-by: Tony Jones <tonyj@suse.de>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB HCD: avoid duplicate local_irq_disable() 2007-11-28T21:58:35+00:00 Alan Stern stern@rowland.harvard.edu 2007-11-21T23:13:10+00:00 ddc1fd6ac1f3ad3275e19451fb07d2eff249161c Arnd Bergmann wrote: usb_hcd_flush_endpoint() has a retry loop that starts with a spin_lock_irq(), but only gives up the spinlock, not the irq_disable before jumping to the rescan label. Alan Stern: I agree with your sentiment, but it would be better to solve this problem without using local_irq_disable(). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Arnd Bergmann wrote:

usb_hcd_flush_endpoint() has a retry loop that starts with a spin_lock_irq(),
but only gives up the spinlock, not the irq_disable before jumping to the
rescan label.

Alan Stern:

I agree with your sentiment, but it would be better to solve this
problem without using local_irq_disable().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
cleanup asm/scatterlist.h includes 2007-11-02T07:47:06+00:00 Adrian Bunk bunk@kernel.org 2007-10-30T09:35:04+00:00 87ae9afdcada236d0a1b38ce2c465a65916961dc Not architecture specific code should not #include <asm/scatterlist.h>. This patch therefore either replaces them with #include <linux/scatterlist.h> or simply removes them if they were unused. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com> 
Not architecture specific code should not #include <asm/scatterlist.h>.

This patch therefore either replaces them with
#include <linux/scatterlist.h> or simply removes them if they were
unused.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
USB: Export URB statistics for powertop 2007-10-12T21:55:30+00:00 Sarah Sharp sarah.a.sharp@intel.com 2007-10-03T21:56:03+00:00 4d59d8a11383ebf0e0260ee481a4e766959fd7d9 powertop currently tracks interrupts generated by uhci, ehci, and ohci, but it has no way of telling which USB device to blame USB bus activity on. This patch exports the number of URBs that are submitted for a given device. Cat the file 'urbnum' in /sys/bus/usb/devices/.../ Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
powertop currently tracks interrupts generated by uhci, ehci, and ohci,
but it has no way of telling which USB device to blame USB bus activity on.
This patch exports the number of URBs that are submitted for a given device.
Cat the file 'urbnum' in /sys/bus/usb/devices/.../

Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: flush outstanding URBs when suspending 2007-10-12T21:55:26+00:00 Alan Stern stern@rowland.harvard.edu 2007-09-10T15:34:26+00:00 6840d2555afd66290be7a39b400b5e66a840b82d This patch (as989) makes usbcore flush all outstanding URBs for each device as the device is suspended. This will be true even when CONFIG_USB_SUSPEND is not enabled. In addition, an extra can_submit flag is added to the usb_device structure. That flag will be turned off whenever a suspend request has been received for the device, even if the device isn't actually suspended because CONFIG_USB_SUSPEND isn't set. It's no longer necessary to check for the device state being equal to USB_STATE_SUSPENDED during URB submission; that check can be replaced by a check of the can_submit flag. This also permits us to remove some questionable references to the deprecated power.power_state field. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
This patch (as989) makes usbcore flush all outstanding URBs for each
device as the device is suspended.  This will be true even when
CONFIG_USB_SUSPEND is not enabled.

In addition, an extra can_submit flag is added to the usb_device
structure.  That flag will be turned off whenever a suspend request
has been received for the device, even if the device isn't actually
suspended because CONFIG_USB_SUSPEND isn't set.

It's no longer necessary to check for the device state being equal to
USB_STATE_SUSPENDED during URB submission; that check can be replaced
by a check of the can_submit flag.  This also permits us to remove
some questionable references to the deprecated power.power_state field.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: break apart flush_endpoint and disable_endpoint 2007-10-12T21:55:26+00:00 Alan Stern stern@rowland.harvard.edu 2007-09-10T15:33:05+00:00 95cf82f99cfbd697c15572c444bd4f54f19745b0 This patch (as988) breaks usb_hcd_endpoint_disable() apart into two routines. The first, usb_hcd_flush_endpoint() does the -ESHUTDOWN unlinking of all URBs in the endpoint's queue and waits for them to complete. The second, usb_hcd_disable_endpoint() -- renamed for better grammatical style -- merely calls the HCD's endpoint_disable method. The changeover is easy because the routine currently has only one caller. This separation of function will be exploited in the following patch: When a device is suspended, the core will be able to cancel all outstanding URBs for that device while leaving the HCD's endpoint-related data structures intact for later. As an added benefit, HCDs no longer need to check for existing URBs in their endpoint_disable methods. It is now guaranteed that there will be none. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
This patch (as988) breaks usb_hcd_endpoint_disable() apart into two
routines.  The first, usb_hcd_flush_endpoint() does the -ESHUTDOWN
unlinking of all URBs in the endpoint's queue and waits for them to
complete.  The second, usb_hcd_disable_endpoint() -- renamed for
better grammatical style -- merely calls the HCD's endpoint_disable
method.  The changeover is easy because the routine currently has only
one caller.

This separation of function will be exploited in the following patch:
When a device is suspended, the core will be able to cancel all
outstanding URBs for that device while leaving the HCD's
endpoint-related data structures intact for later.

As an added benefit, HCDs no longer need to check for existing URBs in
their endpoint_disable methods.  It is now guaranteed that there will
be none.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: Eliminate urb->status usage! 2007-10-12T21:55:23+00:00 Alan Stern stern@rowland.harvard.edu 2007-08-24T19:42:24+00:00 4a00027dcb088bf90fa8fb14a7e8ba3506d78f22 This patch (as979) removes the last vestiges of urb->status from the host controller drivers and the root-hub emulator. Now the field doesn't get set until just before the URB's completion routine is called. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: David Brownell <david-b@pacbell.net> CC: Olav Kongas <ok@artecdesign.ee> CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> CC: Tony Olech <tony.olech@elandigitalsystems.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
This patch (as979) removes the last vestiges of urb->status from the
host controller drivers and the root-hub emulator.  Now the field
doesn't get set until just before the URB's completion routine is
called.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
CC: Tony Olech <tony.olech@elandigitalsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>