- 27 Sep, 2006 40 commits
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David Brownell authored
For systems using the Mentor HDRC controllers we get better TX DMA throughput if we can avoid falling back to PIO to write zero length packets ... so tell the driver to avoid ZLPs. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
This patch (as755b) fixes a bug in usbmon. Rather than assuming all USB host controllers use DMA, the code will check the usb_bus data structure. If DMA isn't used, we don't want to try peeking into a non-existent DMA buffer! Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Alan Stern authored
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:
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Alan Stern authored
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:
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Alan Stern authored
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:
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Andrew Morton authored
Fix CONFIG_PM=n build. Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Alexey Dobriyan authored
drivers/usb/core/hub.c: In function `hub_events': drivers/usb/core/hub.c:2591: warning: statement with no effect Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Alan Stern authored
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:
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Alan Stern authored
The UFI specification doesn't permit devices to indicate non-existent LUNs in the manner prescribed by the SCSI spec. This patch (as773) sets a special flag so that the SCSI scanner will recognize these devices and treat them specially. Signed-off-by:
Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by:
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Jules Villard authored
This tiny patch fixes a typo in drivers/usb/gadget/Kconfig. The typo is present in 2.6.18-rc4 and in the corresponding -mm tree (and AFAIK, FYI and FWIW was present in previous kernel versions as well). From: Jules Villard <jvillard@ens-lyon.fr> Signed-off-by: -
Eric Sesterhenn authored
another gcc 4.1 signdness warning: drivers/usb/gadget/ether.c:2028: warning: comparison of unsigned expression < 0 is always false length is assigned the value of usb_ep_queue() which returns an int. Directly after this it is checked for < 0, which can never be true. Making length an int makes the error check work again. Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Acked-by:
David Brownell <david-b@pacbell.net> Signed-off-by:
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Luiz Fernando N. Capitulino authored
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:
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Inaky Perez-Gonzalez authored
New code being pushed to linuxuwb.org requires this patch to connect WUSB devices. Signed-off-by:
Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Signed-off-by:
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Inaky Perez-Gonzalez authored
This patch teaches the USB stack handling of WUSB devices (those whose speed is USB_SPEED_VARIABLE). For these devices, we need to set ep0's maxpacketsize to 512 (even though the device descriptor reports it as 0xff). New code being pushed to linuxuwb.org requires this patch to connect WUSB devices. Signed-off-by:
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Inaky Perez-Gonzalez authored
This patch enables the USB stack to recognize WUSB devices (from a WUSB HCD) and assigns them the proper speed setting (USB_SPEED_VARIABLE). 1. Introduce usb_hcd->wireless to mark a host controller instance as being wireless, and thus having wireless 'fake' ports. [discarded previous model of using a reserved bit in the port_stat struct to do this; thanks to Alan Stern for indicating the proper way to do it]. 2. Introduce hub.c:hub_is_wusb() that tests if a hub is a WUSB root hub (WUSB doesn't have non-root hubs). New code being pushed to linuxuwb.org requires this patch to connect WUSB devices. Signed-off-by:
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Inaky Perez-Gonzalez authored
Change usb_get_configuration() so that it is more tolerant to devices with bad configuration descriptors (it'll make it ignore configurations that fail to load). Signed-off-by:
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Matthew Dharm authored
This changeset from Keith Bennett (via Bob Copeland) moves the Karma initializer to its own file and adds trapping of the START_STOP command to enable eject of the device. Signed-off-by:
Keith Bennett <keith@mcs.st-and.ac.uk> Signed-off-by:
Bob Copeland <me@bobcopeland.com> Signed-off-by:
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Luiz Fernando N. Capitulino authored
o CodingStyle fixes o Removes trailing spaces o Do not make not needed initialiation of automatic variables o Use usb_endpoint_* functions o If we get an error in the write URB callback print an error message instead of a debug one (Pretty unrelated changes, but spliting this up doesn't pay off as our main changes are just CodingStyle fixes). Signed-off-by:
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Alan Stern authored
We don't want khubd to start interfering in the device-resume process merely because the PORT_STATUS_C_SUSPEND feature happens to be set. Ports need to be marked as busy while a resume is taking place. In addition, so long as ports are marked as busy, khubd won't be able to clear their various status-change features. On an interrupt-driven root hub this could lead to an interrupt storm. Root hub IRQs should not be re-enabled until the busy_bits value is equal to 0. This patch (as765) fixes these two potential problems. Signed-off-by:
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Alan Stern authored
The inconsistent lock state problem in usbcore (the one that shows up when an HCD is unloaded) comes down to two inter-related problems: usb_rh_urb_dequeue() isn't set up to be called with interrupts disabled. hcd_endpoint_disable() doesn't wait for all URBs on the endpoint's queue to complete. The two problems are related because the one type of URB that isn't likely to be complete when hcd_endpoint_disable() returns is a root-hub URB. Right now usb_rh_urb_dequeue() waits for them to complete, and it assumes interrupts are enabled so it can wait. But hcd_endpoint_disable() calls it with interrupts disabled. Now, it should be legal to unlink root-hub URBs with interrupts disabled. The solution is to move the waiting into hcd_endpoint_disable(), where it belongs. This patch (as754) does that. It turns out to be completely safe to replace the del_timer_sync() with a simple del_timer(). It doesn't matter if the timer routine is running; hcd_root_hub_lock will synchronize the two threads and the status URB will complete with an unlink error, as it should. Signed-off-by:
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Alan Stern authored
The UHCI controller in my laptop takes longer to turn off the Resume-Detect bit than the 4 us allowed by uhci-hcd. Presumably other computers will have the same problem. This patch (as752) increases the maximum delay to 10 us, which should be plenty, and uses polling to avoid penalizing systems which can turn the bit off more quickly. Signed-off-by:
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Aleksey Gorelov authored
If some problem occurs during ehci startup, for instance, request_irq fails, echi hcd driver tries it best to cleanup, but fails to unregister reboot notifier, which in turn leads to crash on reboot/poweroff. The following patch resolves this problem by not using reboot notifiers anymore, but instead making ehci/ohci driver get its own shutdown method. For PCI, it is done through pci glue, for everything else through platform driver glue. One downside: sa1111 does not use platform driver stuff, and does not have its own shutdown hook, so no 'shutdown' is called for it now. I'm not sure if it is really necessary on that platform, though. Signed-off-by:
Aleks Gorelov <dared1st@yahoo.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Milan Svoboda authored
I spotted this during my tests with -rt on arm. The -rt patch contains some better tools to diagnose problems with locks and some other things... Original code tries to take semaphore in BUG_ON and then free the memory with this semaphore. Signed-off-by:
Milan Svoboda <msvoboda@ra.rockwell.com> Signed-off-by:
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Milan Svoboda authored
Add poll() support to gadgetfs ep0 Signed-off-by:
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dave rientjes authored
The size of struct nc_trailer is inherently the newtailroom pad. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Luiz Fernando N. Capitulino authored
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Luiz Fernando N. Capitulino authored
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Luiz Fernando N. Capitulino authored
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Luiz Fernando N. Capitulino authored
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Luiz Fernando N. Capitulino authored
Signed-off-by:
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Luiz Fernando N. Capitulino authored
Signed-off-by:
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Luiz Fernando N. Capitulino authored
Signed-off-by:
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Luiz Fernando N. Capitulino authored
Signed-off-by:
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Luiz Fernando N. Capitulino authored
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Luiz Fernando N. Capitulino authored
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Luiz Fernando N. Capitulino authored
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:
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Jesper Juhl authored
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:
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Luiz Fernando N. Capitulino authored
Making structs const prevents accidental bugs and with the proper debug options they're protected against corruption. Signed-off-by:
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Ben Williamson authored
This driver is glue between the USB gadget interface and the ALSA MIDI interface. It allows us to appear as a MIDI Streaming device to a host system on the other end of a USB cable. This includes linux/usb/audio.h and linux/usb/midi.h containing definitions from the relevant USB specifications for USB audio and USB MIDI devices. The following changes have been made since the first RFC posting: * Bug fixes to endpoint handling. * Workaround for USB_REQ_SET_CONFIGURATION handling, not understood yet. * Added SND and SND_RAWMIDI dependencies in Kconfig. * Moved usb_audio.h and usb_midi.h to usb/*.h * Added module parameters for ALSA card index and id. * Added module parameters for USB descriptor IDs and strings. * Removed some unneeded stuff inherited from zero.c, more to go. * Provide DECLARE_* macros for the variable-length structs. * Use kmalloc instead of usb_ep_alloc_buffer. * Limit source to 80 columns. * Return actual error code instead of -ENOMEM in a few places. Signed-off-by:
Ben Williamson <ben.williamson@greyinnovation.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Milan Svoboda authored
This patch adds mutex protection to ep_release. Signed-off-by:
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