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* Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds2007-02-071-5/+29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (70 commits) USB: remove duplicate device id from zc0301 USB: remove duplicate device id from usb_storage USB: remove duplicate device id from keyspan USB: remove duplicate device id from ftdi_sio USB: remove duplicate device id from visor USB: a bit more coding style cleanup usbcore: trivial whitespace fixes usb-storage: use first bulk endpoints, not last EHCI: fix interrupt-driven remote wakeup USB: switch ehci-hcd to new polling scheme USB: autosuspend for usb printer driver USB Input: Added kernel module to support all GTCO CalComp USB InterWrite School products USB: Sierra Wireless auto set D0 USB: usb ethernet gadget recognizes HUSB2DEV USB: list atmel husb2_udc gadget controller USB: gadgetfs AIO tweaks USB: gadgetfs behaves better on userspace init bug USB: gadgetfs race fix USB: gadgetfs simplifications USB: gadgetfs cleanups ...
| * usbcore: remove unused bandwith-related codeAlan Stern2007-02-071-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as841) removes from usbcore a couple of support routines meant to help with bandwidth allocation. With the changes to uhci-hcd in the previous patch, these routines are no longer used anywhere. Also removed is the CONFIG_USB_BANDWIDTH option; it no longer does anything and is no longer needed since the HCDs now handle bandwidth issues correctly. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB: Add usb_endpoint_xfer_control to usb.hSarah Bailey2007-02-071-0/+12
| | | | | | | | | | | | | | | | | | | | Added a function to check if an endpoint is a control endpoint. There were similar functions for bulk, interrupt, and isoc, but not for control endpoints. Signed-off-by: Sarah Bailey <saharabeara@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB serial: add dynamic id support to usb-serial coreGreg Kroah-Hartman2007-02-071-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thanks to Johannes Hölzl <johannes.hoelzl@gmx.de> for fixing a few things and getting it all working properly. This adds support for dynamic usb ids to the usb serial core. The file "new_id" will show up under the usb serial driver, not the usb driver associated with the usb-serial driver (yeah, it can be a bit confusing at first glance...) This patch also modifies the USB core to allow the usb-serial core to reuse much of the dynamic id logic. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Johannes Hölzl <johannes.hoelzl@gmx.de>
| * USB: <linux/usb_ch9.h> becomes <linux/usb/ch9.h>David Brownell2007-02-071-1/+1
| | | | | | | | | | | | | | | | | | This moves <linux/usb_ch9.h> to <linux/usb/ch9.h> to reduce some of the clutter of usb header files. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB: convert usb class devices to real devicesGreg Kroah-Hartman2007-02-071-2/+3
| | | | | | | | | | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB: move usb_device_class class devices to be real devicesGreg Kroah-Hartman2007-02-071-1/+1
| | | | | | | | | | | | | | | | | | This moves the usb class devices that control the usbfs nodes to show up in the proper place in the larger device tree. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | USB: add the sysfs driver name to all modulesGreg Kroah-Hartman2007-02-071-2/+3
|/ | | | | | | | | This adds the module name to all USB drivers, if they are built into the kernel or not. It will show up in /sys/modules/MODULE_NAME/drivers/ Cc: Kay Sievers <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'master' of ↵David Howells2006-12-051-16/+165
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/infiniband/core/iwcm.c drivers/net/chelsio/cxgb2.c drivers/net/wireless/bcm43xx/bcm43xx_main.c drivers/net/wireless/prism54/islpci_eth.c drivers/usb/core/hub.h drivers/usb/input/hid-core.c net/core/netpoll.c Fix up merge failures with Linus's head and fix new compilation failures. Signed-Off-By: David Howells <dhowells@redhat.com>
| * USB: keep count of unsuspended childrenAlan Stern2006-12-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as818b) simplifies autosuspend processing by keeping track of the number of unsuspended children of each USB hub. This will permit us to avoid a good deal of unnecessary work all the time; we will no longer have to create a bunch of workqueue entries to carry out autosuspend requests, only to have them fail because one of the hub's children isn't suspended. The basic idea is simple. There already is a usage counter in the usb_device structure for preventing autosuspends. The patch just increments that counter for every unsuspended child. There's only one tricky part: When a device disconnects we need to remember whether it was suspended at the time (leave the counter alone) or not (decrement the counter). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB: struct usb_device: change flag to bitflagAlan Stern2006-12-011-1/+1
| | | | | | | | | | | | | | | | | | | | This patch (as816) changes an existing flag in the usb_device structure to a bitflag, preparing the way for more bitflags to come in the future. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB: expand autosuspend/autoresume APIAlan Stern2006-12-011-3/+26
| | | | | | | | | | | | | | | | | | | | | | This patch (as814) adds usb_autopm_set_interface() to the autosuspend API. It also provides convenient wrapper routines, usb_autopm_enable() and usb_autopm_disable(), for drivers that want to specify directly whether autosuspend should be allowed. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * USB: makes usb_endpoint_* functions inline.Luiz Fernando N. Capitulino2006-12-011-11/+131
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have no benefits of having the usb_endpoint_* functions as functions, but making them inline saves text and data segment sizes: text data bss dec hex filename 14893634 3108770 1108840 19111244 1239d4c vmlinux.func 14893185 3108566 1108840 19110591 1239abf vmlinux.inline This is the result of a 2.6.19-rc3 kernel compiled with GCC 4.1.1 without CONFIG_MODULES, CONFIG_CC_OPTIMIZE_FOR_SIZE, CONFIG_REGPARM options set. USB support is fully enabled (while most of the other drivers are not), and that kernel has most of the USB code ported to use the endpoint functions. That happens because a call to those functions are expensive (in terms of bytes), while the function's size is smaller or have the same 'size' of the call. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * usb/hub: allow hubs up to 31 childreninaky@linux.intel.com2006-12-011-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current Wireless USB host hardware (Intel i1480 for example) allows up to 22 devices to connect, thus bringing up the max number of children in the WUSB Host Controller to 22 'fake' ports. Upcoming hardware might raise that limit. Makes almost no difference to go to 31, as the bit arrays are byte-aligned (plus an extra bit in general), so 22 bits fit in 4 bytes as 31 do. As well, the only other array that depends on USB_MAXCHILDREN is 'struct usb_hub->indicator'. By declaring it 'u8' instead of 'enum hub_led_mode', we reduce the size of each entry from 4 bytes (in i386) to 1, which will add as we when are doubling USB_MAXCHILDREN (with 16 the size of that array is 64 bytes, with 31 would be 128; by using u8 that goes down to 31 bytes). Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | WorkStruct: make allyesconfigDavid Howells2006-11-221-1/+1
|/ | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* USB: fix autosuspend when CONFIG_PM isn't setAlan Stern2006-09-281-1/+1
| | | | | | | | | This patch (as791b) fixes things up to avoid compiler warnings or errors when CONFIG_USB_SUSPEND or CONFIG_PM isn't set. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: add autosuspend/autoresume infrastructureAlan Stern2006-09-271-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as739) adds the basic infrastructure for USB autosuspend and autoresume. The main features are: PM usage counters added to struct usb_device and struct usb_interface, indicating whether it's okay to autosuspend them or they are currently in use. Flag added to usb_device indicating whether the current suspend/resume operation originated from outside or as an autosuspend/autoresume. Flag added to usb_driver indicating whether the driver supports autosuspend. If not, no device bound to the driver will be autosuspended. Mutex added to usb_device for protecting PM operations. Unlike the device semaphore, the locking rule for the pm_mutex is that you must acquire the locks going _up_ the device tree. New routines handling autosuspend/autoresume requests for interfaces and devices. Suspend and resume requests are propagated up the device tree (but not outside the USB subsystem). work_struct added to usb_device, for carrying out delayed autosuspend requests. Autoresume added (and autosuspend prevented) during probe and disconnect. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: store each usb_device's level in the treeAlan Stern2006-09-271-0/+1
| | | | | | | | | | | This patch (as778) adds a field to struct usb_device to store the device's level in the USB tree. In itself this number isn't really important. But the overhead is very low, and in a later patch it will be used for preventing bogus warnings from the lockdep checker. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: trim down usb_bus structureAlan Stern2006-09-271-3/+0
| | | | | | | | | | | | | | | | | | | | | | As part of the ongoing program to flatten out the HCD bus-glue layer, this patch (as771b) eliminates the hcpriv, release, and kref fields from struct usb_bus. hcpriv and release were not being used for anything worthwhile, and kref has been moved into the enclosing usb_hcd structure. Along with those changes, the patch gets rid of usb_bus_get and usb_bus_put, replacing them with usb_get_hcd and usb_put_hcd. The one interesting aspect is that the dev_set_drvdata call was removed from usb_put_hcd, where it clearly doesn't belong. This means the driver private data won't get reset to NULL. It shouldn't cause any problems, since the private data is undefined when no driver is bound. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: Add flag for whether a host controller uses DMAAlan Stern2006-09-271-0/+1
| | | | | | | | | | | This patch (as770b) introduces a new field to usb_bus: a flag indicating whether or not the host controller uses DMA. This serves to encapsulate the computation. It also means we will have only one spot to update if the DMA API changes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: remove struct usb_operationsAlan Stern2006-09-271-4/+0
| | | | | | | | | | | | | | | All of the currently-supported USB host controller drivers use the HCD bus-glue framework. As part of the program for flattening out the glue layer, this patch (as769) removes the usb_operations structure. All function calls now go directly to the HCD routines (slightly renamed to remain within the "usb_" namespace). The patch also removes usb_alloc_bus(), because it's not useful in the HCD framework and it wasn't referenced anywhere. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: help drivers to change device configsAlan Stern2006-09-271-0/+3
| | | | | | | | | | | | | It's generally a bad idea for USB interface drivers to try to change a device's configuration, and usbcore doesn't provide any way for them to do it. However in a few exceptional circumstances it can make sense. This patch (as767) adds a roundabout mechanism to help drivers that may need it. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB core: Use const where possible.Luiz Fernando N. Capitulino2006-09-271-9/+9
| | | | | | | | | | This patch marks some USB core's functions parameters as const. This improves the design (we're saying to the caller that its parameter is not going to be modified) and may help in compiler's optimisation work. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: New functions to check endpoints info.Luiz Fernando N. Capitulino2006-09-271-0/+14
| | | | | | | | | | | | | | These functions makes USB driver's code simpler when dealing with endpoints by avoiding them from accessing the endpoint's descriptor structure directly when they only need to know the endpoint's transfer type and/or direction. Please, read each functions' documentation in order to know how to use them. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: making the kernel -Wshadow clean - USB & completionJesper Juhl2006-09-271-9/+9
| | | | | | | | | | | | | | | | include/linux/usb.h causes a lot of -Wshadow warnings - fix them. include/linux/usb.h:901: warning: declaration of 'complete' shadows a global declaration include/linux/completion.h:52: warning: shadowed declaration is here include/linux/usb.h:932: warning: declaration of 'complete' shadows a global declaration include/linux/completion.h:52: warning: shadowed declaration is here include/linux/usb.h:967: warning: declaration of 'complete' shadows a global declaration include/linux/completion.h:52: warning: shadowed declaration is here Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: track whether interfaces are suspendedAlan Stern2006-09-271-0/+3
| | | | | | | | | | | | | | | | | | Currently we rely on intf->dev.power.power_state.event for tracking whether intf is suspended. This is not a reliable technique because that value is owned by the PM core, not by usbcore. This patch (as718b) adds a new flag so that we can accurately tell which interfaces are suspended and which aren't. At first one might think these flags aren't needed, since interfaces will be suspended along with their devices. It turns out there are a couple of intermediate situations where that's not quite true, such as while processing a remote-wakeup request. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbcore: add usb_device_driver definitionAlan Stern2006-09-271-7/+51
| | | | | | | | | | | | | | | | | | | This patch (as732) adds a usb_device_driver structure, for representing drivers that manage an entire USB device as opposed to just an interface. Support routines like usb_register_device_driver, usb_deregister_device_driver, usb_probe_device, and usb_unbind_device are also added. Unlike an earlier version of this patch, the new code is type-safe. To accomplish this, the existing struct driver embedded in struct usb_driver had to be wrapped in an intermediate wrapper. This enables the core to tell at runtime whether a particular struct driver belongs to a device driver or to an interface driver. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Revert "[PATCH] USB: move usb_device_class class devices to be real devices"Greg Kroah-Hartman2006-08-021-1/+1
| | | | | | | | | This reverts c182274ffe1277f4e7c564719a696a37cacf74ea commit because it required a newer version of udev to work properly than what is currently documented in Documentation/Changes. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Revert "[PATCH] USB: convert usb class devices to real devices"Greg Kroah-Hartman2006-08-021-3/+2
| | | | | | | | This reverts bd00949647ddcea47ce4ea8bb2cfcfc98ebf9f2a commit because it required a newer version of udev to work properly than what is currently documented in Documentation/Changes. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: fix usb kernel-docRandy Dunlap2006-07-121-1/+1
| | | | | | | Warning(/var/linsrc/linux-2617-g4//include/linux/usb.h:66): No description found for parameter 'ep_dev' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: convert usb class devices to real devicesGreg Kroah-Hartman2006-06-211-2/+3
| | | | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: move usb_device_class class devices to be real devicesGreg Kroah-Hartman2006-06-211-1/+1
| | | | | | | | | | | This moves the usb class devices that control the usbfs nodes to show up in the proper place in the larger device tree. No userspace changes is needed, this is compatible due to the symlinks generated by the driver core. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: make endpoints real struct devicesGreg Kroah-Hartman2006-06-211-1/+3
| | | | | | | | This will allow for us to give endpoints a major/minor to create a "usbfs2-like" way to access endpoints directly from userspace in an easier manner than the current usbfs provides us. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] usbcore: port reset for composite devicesAlan Stern2006-06-211-0/+9
| | | | | | | | | | | | | | This patch (as699) adds usb_reset_composite_device(), a routine for sending a USB port reset to a device with multiple interfaces owned by different drivers. Drivers are notified about impending and completed resets through two new methods in the usb_driver structure. The patch modifieds the usbfs ioctl code to make it use the new routine instead of usb_reset_device(). Follow-up patches will modify the hub, usb-storage, and usbhid drivers so they can utilize this new API. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: add usb_interrupt_msg() function for api completeness.Greg Kroah-Hartman2006-06-211-0/+2
| | | | | | | Really just a wrapper around usb_bulk_msg() but now it's documented much better. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Don't include linux/config.h from anywhere else in include/David Woodhouse2006-04-261-1/+0
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [PATCH] mark f_ops const in the inodeArjan van de Ven2006-03-281-1/+1
| | | | | | | | | | | Mark the f_ops members of inodes as const, as well as fix the ripple-through this causes by places that copy this f_ops and then "do stuff" with it. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] USB: drivers/usb/core/message.c: make usb_get_string() staticAdrian Bunk2006-03-201-2/+0
| | | | | | | | After the removal of usb-midi.c, there's no longer any external user of usb_get_string(). Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2006-01-041-1/+1
|\ | | | | | | Trivial manual merge fixup for usb_find_interface clashes.
| * [PATCH] driver core: replace "hotplug" by "uevent"Kay Sievers2006-01-041-1/+1
| | | | | | | | | | | | | | | | | | Leave the overloaded "hotplug" word to susbsystems which are handling real devices. The driver core does not "plug" anything, it just exports the state to userspace and generates events. Signed-off-by: Kay Sievers <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: Store port number in usb_deviceAlan Stern2006-01-041-0/+1
| | | | | | | | | | | | | | | | | | | | This patch (as610) adds a field to struct usb_device to store the device's port number. This allows us to remove several loops in the hub driver (searching for a particular device among all the entries in the parent's array of children). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: Consider power budget when choosing configurationAlan Stern2006-01-041-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as609) changes the way we keep track of power budgeting for USB hubs and devices, and it updates the choose_configuration routine to take this information into account. (This is something we should have been doing all along.) A new field in struct usb_device holds the amount of bus current available from the upstream port, and the usb_hub structure keeps track of the current available for each downstream port. Two new rules for configuration selection are added: Don't select a self-powered configuration when only bus power is available. Don't select a configuration requiring more bus power than is available. However the first rule is #if-ed out, because I found that the internal hub in my HP USB keyboard claims that its only configuration is self-powered. The rule would prevent the configuration from being chosen, leaving the hub & keyboard unconfigured. Since similar descriptor errors may turn out to be fairly common, it seemed wise not to include a rule that would break automatic configuration unnecessarily for such devices. The second rule may also trigger unnecessarily, although this should be less common. More likely it will annoy people by sometimes failing to accept configurations that should never have been chosen in the first place. The patch also changes usbcore's reaction when no configuration is suitable. Instead of raising an error and rejecting the device, now the core will simply leave the device unconfigured. People can always work around such problems by installing configurations manually through sysfs. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: Remove USB private semaphoreAlan Stern2006-01-041-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as605) removes the private udev->serialize semaphore, relying instead on the locking provided by the embedded struct device's semaphore. The changes are confined to the core, except that the usb_trylock_device routine now uses the return convention of down_trylock rather than down_read_trylock (they return opposite values for no good reason). A couple of other associated changes are included as well: Now that we aren't concerned about HCDs that avoid using the hcd glue layer, usb_disconnect no longer needs to acquire the usb_bus_lock -- that can be done by usb_remove_hcd where it belongs. Devices aren't locked over the same scope of code in usb_new_device and hub_port_connect_change as they used to be. This shouldn't cause any trouble. Along with the preceding driver core patch, this needs a lot of testing. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: remove .owner field from struct usb_driverGreg Kroah-Hartman2006-01-041-4/+0
| | | | | | | | | | | | It is no longer needed, so let's remove it, saving a bit of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: make registering a usb driver automatically set the module ownerGreg Kroah-Hartman2006-01-041-1/+5
| | | | | | | | | | | | | | | | This fixes the driver that forgot to set the module owner up. Now we can remove the unneeded pointer from the usb driver structure. The idea for how to do this was from Al Viro, who did this for the PCI drivers. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: allow usb drivers to disable dynamic idsGreg Kroah-Hartman2006-01-041-0/+3
| | | | | | | | | | | | | | | | | | | | | | This lets drivers, like the usb-serial ones, disable the ability to add ids from sysfs. The usb-serial drivers are "odd" in that they are really usb-serial bus drivers, not usb bus drivers, so the dynamic id logic will have to go into the usb-serial bus core for those drivers to get that ability. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] USB: add dynamic id functionality to USB coreGreg Kroah-Hartman2006-01-041-0/+8
|/ | | | | | | | | | | | | | | Echo the usb vendor and product id to the "new_id" file in the driver's sysfs directory, and then that driver will be able to bind to a device with those ids if it is present. Example: echo 0557 2008 > /sys/bus/usb/drivers/foo_driver/new_id adds the hex values 0557 and 2008 to the device id table for the foo_driver. Note, usb-serial drivers do not currently work with this capability yet. usb-storage also might have some oddities. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: kernel-doc for linux/usb.hRandy Dunlap2005-11-231-0/+1
| | | | | | | | Fix kernel-doc warning in linux/usb.h. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] DocBook: allow to mark structure members privateMartin Waitz2005-11-131-3/+3
| | | | | | | | | | Many structures contain both an internal part and one which is part of the API to other modules. With this patch it is possible to only include these public members in the kernel documentation. Signed-off-by: Martin Waitz <tali@admingilde.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 09:38:44 +0000