- 12 Oct, 2007 40 commits
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Alan Stern authored
This patch (as1002) fixes a small race which can occur when a driver expects usbcore to reschedule an autosuspend request. If the request arrives too late, it won't be rescheduled. The patch adds an extra argument to autosuspend_check(), indicating that a reschedule is needed no matter how much time has elapsed. It also tries to avoid letting asynchronous changes to the value of jiffies cause a delay to become negative, by caching a local copy of the current time. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Haavard Skinnemoen authored
Keep track of the device status (as returned by the GET_STATUS request) and allow it to be manipulated by set_selfpowered() as well as SET_FEATURE/CLEAR_FEATURE (for remote wakeup) Implement the wakeup() op, which refuses to do anything if the DEVICE_REMOTE_WAKEUP feature wasn't set by the host. Now this driver passes USBCV (at least, with gadget zero). Fix one more locking bug; lockdep is every developer's friend. Signed-off-by:
Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Ortwin Glück authored
Not surprisingly the Nikon D40X DSC needs the same quirks as the D40, but it has a separate ID. See http://bugs.gentoo.org/show_bug.cgi?id=191431 From: Ortwin Glück <odi@odi.ch> Signed-off-by:
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Alan Stern authored
This patch (as997) fixes a bug in the USB serial core. The core needs to pay attention to drivers' requirements regarding the number and type of endpoints a device has. At the same time, the patch changes the NUM_DONT_CARE constant (which is stored in a single-byte field) from -1 to a safer, unsigned value. It also improves the kerneldoc for several fields in the usb_serial_driver structure. Finally, the patch replaces a list_for_each() with list_for_each_entry(). Signed-off-by:
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Alan Stern authored
This patch (as998) adds documentation on how USB power management works and how to use it. Signed-off-by:
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Alan Stern authored
System suspends and hibernation are supposed to be as transparent as possible. By this reasoning, if a USB device is already autosuspended before the system sleep begins then it should remain autosuspended after the system wakes up. This patch (as1001) adds a skip_sys_resume flag to the usb_device structure and uses it to avoid waking up devices which were suspended when a system sleep began. Signed-off-by:
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Alan Stern authored
This patch (as999) fixes a problem that sometimes shows up when host controller driver modules are loaded in the wrong order. If ehci-hcd happens to initialize an EHCI controller while the companion OHCI or UHCI controller is in the middle of a port reset, the reset can fail and the companion may get very confused. The patch adds an rw-semaphore and uses it to keep EHCI initialization and port resets mutually exclusive. Signed-off-by:
David Brownell <david-b@pacbell.net> Cc: David Miller <davem@davemloft.net> Cc: Dely L Sy <dely.l.sy@intel.com> Signed-off-by:
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Richard Sharpe authored
Attached is a very small patch (several comment lines) and a one-line coded change) that allows for USB storage devices that are larger than 2TB. At the company where I work we need such support, and one of my co-workers, Jane Liu, pointed out that SCSI low-layer drivers need to specify what size CDBs they accept. After looking through the code it became obvious that the current USB Storage code accepted the default of 12-byte CDBs, so I changed it to accept 16-byte CDBs. This allows our device to work. Signed-off-by:
Richard Sharpe <rsharpe@richardsharpe.com> Signed-off-by:
Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by:
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Nobuhiro Iwamatsu authored
This patch supports for SHARP WS011SH[0] to ipaq.c [0]: http://www.willcom-inc.com/ja/lineup/ws/011sh/index.html (Sorry , Japanese only.) Signed-off-by:
Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by:
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Haavard Skinnemoen authored
This is a driver for the Atmel USBA UDC which can be found integrated on AT32AP700x AVR32 processors. For hardware documentation, please see the AT32AP7000 data sheet: http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf This is a dual speed controller (connects at high or full speed). The driver supports up to 7 control, bulk, interrupt and isochronous endpoints with some constraints. Bulk, interrupt and isochronous transfers are driven by DMA. Signed-off-by:
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Michael Buesch authored
This adds SSB bus glue for the USB OHCI HCD. Signed-off-by:
Michael Buesch <mb@bu3sch.de> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
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David Brownell authored
Cleanup: references to two PM routines (and HCD entry points) that no longer exist are swapped with their replacements. Evidently au1xxx and ppc-soc EHCI support doesn't get compiled with power management very much, or these build bugs would have been patched long ago. Signed-off-by:
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Valentine Barshak authored
Add OHCI big endian frame_no quirk. The frame_no value stored in the HCCA is a 16 bit field at a specific offset, but since not all CPUs can do 16-bit memory accesses it's used as a 32 bit field. And that's why big-endian OHCI must shift 16 bits ... unless the spec is not followed. Currently there's one MPC52xx platform that doesn't need the shift. This patch adds a new "big endian frame_no" quirk to control that at runtime. Signed-off-by:
Valentine Barshak <vbarshak@ru.mvista.com> Acked-by:
Dale Farnsworth <dale@farnsworth.org> Signed-off-by:
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Alan Cox authored
Funsoft has a bogus ioctl handler doing bogus termios handling in a bogus manner. Fortunately we can simply delete all the bogus bits and get the right default behaviour ! Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Alan Cox authored
Visor has a huge complex routine which displays termios bits for debug but doesn't do anything. Get the correct behaviour by removing it all Signed-off-by:
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Alan Stern authored
This patch (as996) adds an unusual_devs entry for the Nikon DSC D2Xs camera. Signed-off-by:
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David Brownell authored
Remove <linux/usb_sl811.h> ... somehow this was recreated when the Blackfin arch was merged, instead of using <linux/usb/sl811.h> which is the correct header. Signed-off-by:
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David Brownell authored
Move <linux/usb_gadget.h> to <linux/usb/gadget.h>, reducing some of the clutter in the main include directory. Signed-off-by:
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Sarah Sharp authored
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:
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Vitaly Bordug authored
After Serial gadget is being unloaded, neither serial itself, nor other gadget stuff can be loaded subsequently. Signed-off-by:
Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by:
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WANG Cong authored
Kill two unused variables in drivers/usb/misc/sisusbvga/sisusb.c. Signed-off-by:
WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Benedikt Spranger authored
Fix a longstanding race in the Ethernet gadget driver, which can cause an oops on device disconnect. The fix is just to make the TX path check whether its freelist is empty. That check is otherwise not necessary, since the queue is always stopped when that list empties (and restarted when request completion puts an entry back on that freelist). The race window starts when the network code decides to transmit a packet, and ends when hard_start_xmit() grabs the freelist lock. When disconnect() is called inside that window, it shuts down the TX queue and breaks the otherwise-solid assumption that packets are never sent through a TX queue that's stopped. Signed-off-by:
Benedikt Spranger <bene@linutronix.de> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Andrew Morton authored
drivers/usb/misc/sisusbvga/sisusb.c: In function 'sisusb_open': drivers/usb/misc/sisusbvga/sisusb.c:2444: warning: 'sisusb' is used uninitialized in this function I can tell that'll oops just by looking at it. How come this code assume a 7,000 column xterm? :( Cc: Felipe Balbi <felipe.lima@indt.org.br> Cc: Thomas <thomas@winischhofer.net> Signed-off-by:
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Yoshihiro Shimoda authored
Fixed the problem that accessed register of this controller after having called iounmap(). Signed-off-by:
Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by:
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Yoshihiro Shimoda authored
Fixed the problem that does not work in the big endian machine. Signed-off-by:
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Yoshihiro Shimoda authored
Fixed the problem that does not work in the case of bRequest = 0x05 in Class or Vendor Request. Signed-off-by:
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Adrian Bunk authored
This patch makes four needlessly global functions static. Signed-off-by:
Adrian Bunk <bunk@kernel.org> Signed-off-by:
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Frank A Kingswood authored
This patch implements a USB serial port driver for the Winchiphead CH341 USB-RS232 Converter. This chip also implements an IEEE 1284 parallel port, I2C and SPI, but that is not supported by the driver. Signed-off-by:
Frank A Kingswood <frank@kingswood-consulting.co.uk> Signed-off-by:
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Simon Arlott authored
When an error occurs, existing logging uses dbg() so the cause of a problem is hard to determine. Error conditions shouldn't only be properly reported with debugging enabled. A side effect of this change is that when an uninitialised device is started, a log message similar to the following is sent: cxacru 5-2:1.0: receive of cm 0x90 failed (-104) This is normal - the device did not respond so firmware will be loaded. Signed-off-by:
Simon Arlott <simon@fire.lp0.eu> Acked-by:
Duncan Sands <baldrick@free.fr> Signed-off-by:
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Edouard Lafargue authored
This patch adds an additional device ID to the cp2101 USB serial driver. This device is a Gemalto Prox-PU or CU contactless card reader (ISO14443-A/B and Mifare). The reader is a standard Gemalto serial proximity reader using the Gemalto Block Protocol (see reader's documentation) bundled with a built-in CP2102 for serial/USB conversion. Signed-off-by: Edouard Lafargue (edouard@lafargue.name) Signed-off-by: -
Phil Dibowitz authored
Upgrade the unusual_devs.h file to support the Nikon D200 Signed-off-by:
Mike Pagano <mpagano-kernel@mpagano.com> Signed-off-by:
Phil Dibowitz <phil@ipom.com> Signed-off-by:
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Alan Stern authored
This patch (as995) cleans up the remains of the former NO_AUTOSUSPEND quirk. Since autosuspend is disabled by default, we will let userspace worry about which devices can safely be suspended. Thus the lengthy series of quirk entries is no longer needed, and neither is the quirk ID. I suppose someone might eventually run across a hub that can't be suspended; let's ignore the possibility for now. The patch also cleans up the hasty way in which autosuspend gets disabled. Setting udev->autosuspend_delay to -1 wasn't quite right, because the value is always supposed to be a multiple of HZ. It's better to leave the delay value alone and set autosuspend_disabled, which is what the quirk routine used to do. Signed-off-by:
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Alan Stern authored
This patch (as992) fixes a recently-added bug. During a FREEZE or PRETHAW suspend notification, non-root devices don't actually get suspended. So we shouldn't tell their parent hubs that they did. (This code path used to be skipped over, until the FREEZE/PRETHAW test got moved out of usb_suspend_both() into generic_suspend().) Signed-off-by:
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Alan Stern authored
This patch (as991) updates the unusual_devs entry for the Nokia 6131 phone. As reported by Juan Ignacio Cherrutti, there's new firmware available but it still has the same old transfer-size limit. Signed-off-by:
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jidong xiao authored
This patch (jx001) fixes a variable assignment mistake in hub driver. limited_power should be set to 0 if the hub is self-powered,and 1 if the hub is bus-powered. However, the effect of the code was exactly opposite to the spec's statement for the Local Power Source field. The spec says, this field is 1 meaning Local power supply lost while this field is 0 indicating Local power supply good.(This statement is very confusing.) So this patch switchs the 0 and 1. Signed-off-by:
Jason Xiao <jidong.xiao@gmail.com> Acked-by:
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Oliver Neukum authored
the error code paths can be enter with buffers to freed buffers. Serial core would do a kfree() on memory already freed. Signed-off-by:
Oliver Neukum <oneukum@suse.de> Signed-off-by:
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Adrian Bunk authored
Currently, every driver under drivers/usb/misc/ also has to be listed in drivers/usb/Makefile. This has been forgotten more than once, and this patch changes drivers/usb/Makefile to simply always visit drivers/usb/misc/ when building the USB code. Signed-off-by:
Satyam Sharma <satyam@infradead.org> Signed-off-by:
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Mark Gross authored
This weekend I was hacking around with a trivial USB driver for talking to the boot load firmware of a USB Bit Whacker. It's running the MicroChip Pic18 boot loader firmware and I'm putting together a flash program for writing new FW to the thing. Anyway in my use of the usb-skeleton.c as my starting point I discovered my test program was getting hung up after attempting to write a buffer. The application and driver where hung in a way that required me to reboot to get it to clean up so I could try again. It turned out the code path through skel_open can grap the driver's io_mutex lock and forget to release it. The following patch fixes the problem for me. Signed-off-by:
Mark Gross <mgross@linux.intel.com> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by:
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Alan Stern authored
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:
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Alan Stern authored
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:
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