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2010-10-18Update broken web addresses in the kernel.Justin P. Mattock111-167/+150
The patch below updates broken web addresses in the kernel Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Finn Thain <fthain@telegraphics.com.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Acked-by: Ben Pfaff <blp@cs.stanford.edu> Acked-by: Hans J. Koch <hjk@linutronix.de> Reviewed-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-10-06Revert "drivers/usb: Remove unnecessary return's from void functions" for ↵Jiri Kosina1-0/+1
musb gadget This is a partial revert of 7f26b3a7533b ("drivers/usb: Remove unnecessary return's from void functions") as this hunk will vanish in USB tree completely. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-24Revert "Fix typo: configuation => configuration" partiallyJiri Kosina1-1/+1
This is a partial revert of 0b1974de66f ("Fix typo: configuation => configuration") as this hunk is removed in net-next. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23drivers/scsi: Remove unnecessary casts of private_dataJoe Perches2-2/+2
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23drivers/s390: Remove unnecessary casts of private_dataJoe Perches1-3/+3
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23drivers/infiniband: Remove unnecessary casts of private_dataJoe Perches1-2/+2
Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23drivers/gpu/drm: Remove unnecessary casts of private_dataJoe Perches3-3/+3
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23Fix typo configue => configure in commentsThomas Weber1-1/+1
Signed-off-by: Thomas Weber <weber@corscience.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23Fix typo: configuation => configurationThomas Weber3-5/+5
Signed-off-by: Thomas Weber <weber@corscience.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-21Fix typo interrest[ing|ed] => interest[ing|ed]Thomas Weber2-3/+3
Fix typos with interrest*. Signed-off-by: Thomas Weber <weber@corscience.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-21Fix various typos of valid in commentsNikanth Karthikesan3-4/+4
Fix various typos of valid. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-02Revert "drivers/usb: Remove unnecessary return's from void functions" partiallyJiri Kosina1-0/+3
This is a partial revert of 7f26b3a7533b ("drivers/usb: Remove unnecessary return's from void functions") as this hunk will go through USB tree due to conflict. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-24parport_pc: show the detection of a 2 serial port ITE8874 chipNiels de Vos1-1/+1
The printk message for the 2 serial port version is obscured with a debug macro, unlike all other versions of the card. It should be changed to make the output equal for all detected models. Reference: https://bugzilla.redhat.com/show_bug.cgi?id=578616#c1 CC: Joe Krahn <krahn@niehs.nih.gov> Signed-off-by: Niels de Vos <ndevos@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-23Fix typo in Kconfig help textThomas Weber1-1/+1
Fix the name of the sensor: BMP086 => BMP085 Signed-off-by: Thomas Weber <weber@corscience.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-19Use kzalloc in idedisk_prep_fn.Tao Ma1-2/+1
Signed-off-by: Tao Ma <tao.ma@oracle.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-16vesafb: fix comment a typoJustin P. Mattock1-1/+1
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-11Merge branch 'master' into for-nextJiri Kosina502-13595/+29103
Conflicts: fs/exofs/inode.c
2010-08-10Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds21-2012/+644
* 'for-linus' of git://neil.brown.name/md: (24 commits) md: clean up do_md_stop md: fix another deadlock with removing sysfs attributes. md: move revalidate_disk() back outside open_mutex md/raid10: fix deadlock with unaligned read during resync md/bitmap: separate out loading a bitmap from initialising the structures. md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log. md/bitmap: optimise scanning of empty bitmaps. md/bitmap: clean up plugging calls. md/bitmap: reduce dependence on sysfs. md/bitmap: white space clean up and similar. md/raid5: export raid5 unplugging interface. md/plug: optionally use plugger to unplug an array during resync/recovery. md/raid5: add simple plugging infrastructure. md/raid5: export is_congested test raid5: Don't set read-ahead when there is no queue md: add support for raising dm events. md: export various start/stop interfaces md: split out md_rdev_init md: be more careful setting MD_CHANGE_CLEAN md/raid5: ensure we create a unique name for kmem_cache when mddev has no gendisk ...
2010-08-10power: Remove owner field from attribute initialization code in OLPC driverGuenter Roeck1-1/+0
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-10docbook: fix fatal error from libataRandy Dunlap1-1/+1
'make htmldocs' has a fatal error when processing libata.xml, as seen below. The string "Example patterns:" (or any string with "example.*:" in it AFAIK) causes some part of the doc generation tool chain to try to produce an <informalexample> block without a beginning <para>, but there is an ending </para> generated, which throws things out of kilter. I don't even know where (what program) this is happening in. I searched in docproc and xmlto and in some XML stylesheets without finding anything. If anyone can give me pointers about this, please do. Until this is fixed, let's just spell "Example" as "Sample" and match up the double quotation marks while there. Documentation/DocBook/libata.xml:6575: parser error : Opening and ending tag mismatch: programlisting line 6573 and para </para><para> ^ Documentation/DocBook/libata.xml:6580: parser error : Opening and ending tag mismatch: para line 6575 and programlisting </programlisting></informalexample> ^ unable to parse Documentation/DocBook/libata.xml make[2]: *** [Documentation/DocBook/libata.html] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-10Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds88-2249/+3178
* 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits) block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n xen-blkfront: fix missing out label blkdev: fix blkdev_issue_zeroout return value block: update request stacking methods to support discards block: fix missing export of blk_types.h writeback: fix bad _bh spinlock nesting drbd: revert "delay probes", feature is being re-implemented differently drbd: Initialize all members of sync_conf to their defaults [Bugz 315] drbd: Disable delay probes for the upcomming release writeback: cleanup bdi_register writeback: add new tracepoints writeback: remove unnecessary init_timer call writeback: optimize periodic bdi thread wakeups writeback: prevent unnecessary bdi threads wakeups writeback: move bdi threads exiting logic to the forker thread writeback: restructure bdi forker loop a little writeback: move last_active to bdi writeback: do not remove bdi from bdi_list writeback: simplify bdi code a little writeback: do not lose wake-ups in bdi threads ... Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and drivers/scsi/scsi_error.c as per Jens.
2010-08-10Merge branch 'v4l_for_linus' of ↵Linus Torvalds95-5026/+11971
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (94 commits) V4L/DVB: tvp7002: fix write to H-PLL Feedback Divider LSB register V4L/DVB: dvb: siano: free spinlock before schedule() V4L/DVB: media: video: pvrusb2: remove custom hex_to_bin() V4L/DVB: drivers: usbvideo: remove custom implementation of hex_to_bin() V4L/DVB: Report supported QAM modes on bt8xx V4L/DVB: media: ir-keytable: null dereference in debug code V4L/DVB: ivtv: convert to the new control framework V4L/DVB: ivtv: convert gpio subdev to new control framework V4L/DVB: wm8739: convert to the new control framework V4L/DVB: cs53l32a: convert to new control framework V4L/DVB: wm8775: convert to the new control framework V4L/DVB: cx2341x: convert to the control framework V4L/DVB: cx25840: convert to the new control framework V4L/DVB: cx25840/ivtv: replace ugly priv control with s_config V4L/DVB: saa717x: convert to the new control framework V4L/DVB: msp3400: convert to the new control framework V4L/DVB: saa7115: convert to the new control framework V4L/DVB: v4l2: hook up the new control framework into the core framework V4L/DVB: Documentation: add v4l2-controls.txt documenting the new controls API V4L/DVB: v4l2-ctrls: Whitespace cleanups ...
2010-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds8-26/+1189
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: watchdog: hpwdt: formatting of pointers in printk() watchdog: Adding support for ARM Primecell SP805 Watchdog watchdog: f71808e_wdt: new watchdog driver for Fintek F71808E and F71882FG watchdog: sch311x_wdt.c: set parent before registeriing the misc device in probe() function watchdog: wdt_pci.c: move ids to pci_ids.h watchdog: s3c2410_wdt - Fix removing of platform device
2010-08-10Merge branch 'for-linus' of ↵Linus Torvalds3-7/+11
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: RDMA/cxgb4: Obtain RDMA QID ranges from LLD/FW
2010-08-10Merge branch 'for-linus' of ↵Linus Torvalds23-225/+303
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: xpad - add USB-ID for PL-3601 Xbox 360 pad Input: cy8ctmg100_ts - signedness bug Input: elantech - report position also with 3 fingers Input: elantech - discard the first 2 positions on some firmwares Input: adxl34x - do not mark device as disabled on startup Input: gpio_keys - add hooks to enable/disable device Input: evdev - rearrange ioctl handling Input: dynamically allocate ABS information Input: switch to input_abs_*() access functions Input: add static inline accessors for ABS properties
2010-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds117-1836/+4571
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (148 commits) USB: serial: fix stalled writes USB: remove fake "address-of" expressions USB: fix thread-unsafe anchor utiliy routines USB: usbtest: support test device with only one iso-in or iso-out endpoint USB: usbtest: avoid to free coherent buffer in atomic context USB: xhci: Set DMA mask for host. USB: xhci: Don't flush doorbell writes. USB: xhci: Reduce reads and writes of interrupter registers. USB: xhci: Make xhci_set_hc_event_deq() static. USB: xhci: Minimize HW event ring dequeue pointer writes. USB: xhci: Make xhci_handle_event() static. USB: xhci: Remove unnecessary reads of IRQ_PENDING register. USB: xhci: Performance - move xhci_work() into xhci_irq() USB: xhci: Performance - move interrupt handlers into xhci-ring.c USB: xhci: Performance - move functions that find ep ring. USB:: fix linux/usb.h kernel-doc warnings USB: add USB serial ssu100 driver USB: usb-storage: implement autosuspend USB: ehci: fix remove of ehci debugfs dir USB: Add USB 2.0 to ssb ohci driver ...
2010-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6Linus Torvalds66-609/+5243
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (68 commits) U6715 16550A serial driver support Char: nozomi, set tty->driver_data appropriately Char: nozomi, fix tty->count counting serial: max3107: Fix gpiolib support hsu: call PCI pm hooks in suspend/resume function hsu: some code cleanup hsu: add a periodic timer to check dma rx channel hsu: driver for Medfield High Speed UART device mxser: remove unnesesary NULL check serial: add support for OX16PCI958 card serial: 68328serial.c: remove dead (ALMA_ANS | DRAGONIXVZ | M68EZ328ADS) timbuart: use __devinit and __devexit macros for probe and remove serial: MMIO32 support for 8250_early.c serial: mcf: don't take spinlocks in already protected functions serial: general fixes in the serial_rs485 structure serial: fix missing bit coverage of ASYNC_FLAGS serial: "altera_uart: simplify altera_uart_console_putc()" checkpatch fixes serial: crisv10: formatting of pointers in printk() vt: Fix warning: statement with no effect due to vt_kern.h tty_io: remove casts from void* ...
2010-08-10USB: serial: fix stalled writesJohan Hovold1-5/+10
As David VomLehn points out, it was possible to receive an interrupt before clearing the free-urb flag which could lead to the urb being incorrectly marked as busy. For the same reason, move tx_bytes accounting so that it will never be negative. Note that the free-flags set and clear operations do not need any additional locking as they are manipulated while USB_SERIAL_WRITE_BUSY is set. Reported-by: David VomLehn <dvomlehn@cisco.com> Tested-by: David VomLehn <dvomlehn@cisco.com> Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: remove fake "address-of" expressionsAlan Stern4-23/+15
Fake "address-of" expressions that evaluate to NULL generally confuse readers and can provoke compiler warnings. This patch (as1412) removes three such fake expressions, using "#ifdef"s in their place. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: fix thread-unsafe anchor utiliy routinesChristian Lamparter1-29/+21
This patch fixes a race condition in two utility routines related to the removal/unlinking of urbs from an anchor. If two threads are concurrently accessing the same anchor, both could end up with the same urb - thinking they are the exclusive owner. Alan Stern pointed out a related issue in usb_unlink_anchored_urbs: "The URB isn't removed from the anchor until it completes (as a by-product of completion, in fact), which might not be for quite some time after the unlink call returns. In the meantime, the subroutine will keep trying to unlink it, over and over again." Cc: stable <stable@kernel.org> Cc: Oliver Neukum <oneukum@suse.de> Cc: Greg Kroah-Hartman <greg@kroah.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: usbtest: support test device with only one iso-in or iso-out endpointMing Lei1-1/+4
It is very common that one altsetting may include only one iso-in or iso-out single endpoint, especially for high bandwidth endpoint, so support it. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: usbtest: avoid to free coherent buffer in atomic contextMing Lei1-1/+5
This patch fixes the warning below: [30753.755998] ------------[ cut here ]------------ [30753.755998] WARNING: at /home/tom/git/linux-2.6/linux-2.6-next/arch/x86/include/asm/dma-mapping.h:155 hcd_buffer_free+0xb1/0xd4 [usbcore]() [30753.755998] Hardware name: 6475EK2 [30753.755998] Modules linked in: uvcvideo ehci_hcd usbtest cdc_ether usbnet vfat fat usb_storage nfsd lockd nfs_acl auth_rpcgss exportfs mii tun videodev v4l1_compat v4l2_compat_ioctl32 fuse bridge stp llc sunrpc ipv6 cpufreq_ondemand acpi_cpufreq freq_table mperf kvm_intel kvm arc4 ecb ath5k usbhid mac80211 snd_hda_codec_conexant ch341 usbserial ath cfg80211 thinkpad_acpi snd_hda_intel pcspkr wmi hwmon yenta_socket iTCO_wdt iTCO_vendor_support i2c_i801 e1000e snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore snd_page_alloc pata_acpi uhci_hcd ohci_hcd usbcore i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: uvcvideo] [30753.755998] Pid: 0, comm: swapper Tainted: G W 2.6.35-rc6-gkh-wl+ #49 [30753.755998] Call Trace: [30753.755998] <IRQ> [<ffffffff8104478a>] warn_slowpath_common+0x80/0x98 [30753.755998] [<ffffffff810447b7>] warn_slowpath_null+0x15/0x17 [30753.755998] [<ffffffffa00ce02d>] hcd_buffer_free+0xb1/0xd4 [usbcore] [30753.755998] [<ffffffffa00c1345>] usb_free_coherent+0x1c/0x1e [usbcore] [30753.755998] [<ffffffffa00b13e4>] simple_free_urb+0x23/0x2f [usbtest] [30753.755998] [<ffffffffa00b210b>] iso_callback+0xbb/0x10f [usbtest] [30753.755998] [<ffffffffa00c7390>] usb_hcd_giveback_urb+0x8c/0xc0 [usbcore] [30753.755998] [<ffffffffa0449b35>] ehci_urb_done+0x84/0x95 [ehci_hcd] [30753.755998] [<ffffffffa044b5a5>] ehci_work+0x41a/0x7dd [ehci_hcd] [30753.755998] [<ffffffffa044e298>] ehci_irq+0x33b/0x370 [ehci_hcd] [30753.755998] [<ffffffff8100fb05>] ? sched_clock+0x9/0xd [30753.755998] [<ffffffff8105e641>] ? sched_clock_local+0x1c/0x82 [30753.755998] [<ffffffff8105e76a>] ? sched_clock_cpu+0xc3/0xce [30753.755998] [<ffffffff81067c7e>] ? trace_hardirqs_off+0xd/0xf [30753.755998] [<ffffffff8105e7b8>] ? cpu_clock+0x43/0x5e [30753.755998] [<ffffffffa00c6999>] usb_hcd_irq+0x45/0xa1 [usbcore] [30753.755998] [<ffffffff81092e02>] handle_IRQ_event+0x20/0xa5 [30753.755998] [<ffffffff81094cea>] handle_fasteoi_irq+0x92/0xd2 [30753.755998] [<ffffffff8100c0ed>] handle_irq+0x1f/0x2a [30753.755998] [<ffffffff8100b75d>] do_IRQ+0x57/0xbe [30753.755998] [<ffffffff8136a693>] ret_from_intr+0x0/0x16 [30753.755998] <EOI> [<ffffffff81223baa>] ? acpi_idle_enter_bm+0x231/0x269 [30753.755998] [<ffffffff81223ba3>] ? acpi_idle_enter_bm+0x22a/0x269 [30753.755998] [<ffffffff812c4b6b>] cpuidle_idle_call+0x99/0xce [30753.755998] [<ffffffff81008dd5>] cpu_idle+0x61/0xaa [30753.755998] [<ffffffff8136374b>] start_secondary+0x1c2/0x1c6 [30753.755998] ---[ end trace 904cfaf7ab4cb1a2 ]--- Signed-off-by: Ming Lei <tom.leiming@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Set DMA mask for host.Sarah Sharp1-0/+9
Tell the USB core that we can do DMA directly (instead of needing it to memory-map the buffers for PIO). If the xHCI host supports 64-bit addresses, set the DMA mask accordingly. Otherwise indicate the host can handle 32-bit DMA addresses. This improves performance because the USB core doesn't have to spend time remapping buffers in high memory into the 32-bit address range. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Don't flush doorbell writes.Sarah Sharp1-5/+0
To tell the host controller that there are transfers on the endpoint rings, we need to ring the endpoint doorbell. This is a PCI MMIO write, which can be delayed until another register read is queued. The previous code would flush the doorbell write by reading the doorbell register after the write. This may take time, and it's not necessary to force the host controller to know about the transfers right away. Don't flush the doorbell register writes. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Reduce reads and writes of interrupter registers.Sarah Sharp1-8/+10
The interrupter register set includes a register that says whether interrupts are pending for each event ring (the IP bit). Each MSI-X vector will get its own interrupter set with separate IP bits. The status register includes an "Event Interrupt (EINT)" bit that is set when an IP bit is set in any of the interrupters. When PCI interrupts are used, the EINT bit exactly mirrors the IP bit in the single interrupter set, and it is a waste of time to check both registers when trying to figure out if the xHC interrupted or another device on the shared IRQ line interrupted. Only check the IP bit to reduce register reads. The IP bit is automatically cleared by the xHC when MSI or MSI-X is enabled. It doesn't make sense to read that register to check for shared interrupts (since MSI and MSI-X aren't shared). It also doesn't make sense to write to that register to clear the IP bit, since it is cleared by the hardware. We can tell whether MSI or MSI-X is enabled by looking at the irq number in hcd->irq. If it's -1, we know MSI or MSI-X is enabled. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Make xhci_set_hc_event_deq() static.Sarah Sharp3-23/+23
Now that the event handler functions no longer use xhci_set_hc_event_deq() to update the event ring dequeue pointer, that function is not used by anything in xhci-ring.c. Move that function into xhci-mem.c and make it static. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Minimize HW event ring dequeue pointer writes.Sarah Sharp1-13/+37
The xHCI specification suggests that writing the hardware event ring dequeue pointer register too often can be an expensive operation for the xHCI hardware to manage. It suggests minimizing the number of writes to that register. Originally, the driver wrote the event ring dequeue pointer after each event was processed. Depending on how the event ring moderation register is set up and how fast the transfers are completing, there may be several events processed for each interrupt. This patch makes the hardware event ring dequeue pointer be written only once per interrupt. Make the transfer event handler and port status event handler only write the software event ring dequeue pointer. Move the updating of the hardware event ring dequeue pointer into the interrupt function. Move the contents of xhci_set_hc_event_deq() into the interrupt handler. The interrupt handler must clear the event handler busy flag, so it might as well also write the dequeue pointer to the same register. This eliminates two 32-bit PCI reads and two 32-bit PCI writes. Reported-by: Andiry Xu <andiry.xu@amd.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Make xhci_handle_event() static.Sarah Sharp2-2/+1
xhci_handle_event() is now only called from within xhci-ring.c, so make it static. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Remove unnecessary reads of IRQ_PENDING register.Sarah Sharp1-15/+12
Remove a duplicate register read of the interrupt pending register from xhci_irq(). Also, remove waiting on the posted write of that register. The host will see it eventually. It will probably read the register itself before deciding whether to interrupt the system again, forcing the posted write to complete. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Performance - move xhci_work() into xhci_irq()Sarah Sharp1-43/+30
When we move xhci_work() into xhci_irq(), we don't need to read the operational register status field twice. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Performance - move interrupt handlers into xhci-ring.cSarah Sharp3-103/+104
Most of the work for interrupt handling is done in xhci-ring.c, so it makes sense to move the functions that are first called when an interrupt happens (xhci_irq() or xhci_msi_irq()) into xhci-ring.c, so that the compiler can better optimize them. Shorten some lines to make it pass checkpatch. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: xhci: Performance - move functions that find ep ring.Sarah Sharp4-48/+85
I've been using perf to measure the top symbols while transferring 1GB of data on a USB 3.0 drive with dd. This is using the raw disk with /dev/sdb, with a block size of 1K. During performance testing, the top symbol was xhci_triad_to_transfer_ring(), a function that should return immediately if streams are not enabled for an endpoint. It turned out that the functions to find the endpoint ring was defined in xhci-mem.c and used in xhci-ring.c and xhci-hcd.c. I moved a copy of xhci_triad_to_transfer_ring() and xhci_urb_to_transfer_ring() into xhci-ring.c and declared them static. I also made a static version of xhci_urb_to_transfer_ring() in xhci.c. This improved throughput on a 1GB read of the raw disk with dd from 186MB/s to 195MB/s, and perf reported sampling the xhci_triad_to_transfer_ring() 0.06% of the time, rather than 9.26% of the time. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: add USB serial ssu100 driverBill Pemberton3-0/+708
Add support for the Quatech SSU-100 single port usb to serial device. This driver is based on the ftdi_sio.c driver and the original serqt_usb driver from Quatech. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: usb-storage: implement autosuspendAlan Stern1-0/+4
This patch (as1400) adds runtime-PM support to usb-storage. It utilizes the SCSI layer's runtime-PM implementation, so its scope is limited. Currently the only effect is that disk-like devices (such as card readers or flash drives) will be autosuspended if they aren't mounted and their device files aren't open. This would apply, for example, to card readers that don't contain a memory card. Unfortunately this won't interact very well with the removable-media polling normally carried out by hal or DeviceKit. Maybe those programs can be changed to use a longer polling interval, or maybe the default autosuspend time for usb-storage should be set to something below 1 second. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: James Bottomley <James.Bottomley@suse.de> Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: ehci: fix remove of ehci debugfs dirMing Lei2-41/+21
The patch below on gregkh tree only creates 'lpm' file under ehci->debug_dir, but not removes it when unloading module, USB: EHCI: EHCI 1.1 addendum: preparation which can make loading of ehci-hcd module failed after unloading it. This patch replaces debugfs_remove with debugfs_remove_recursive to remove ehci debugfs dir and files. It does fix the bug above, and may simplify the removing procedure. Also, remove the debug_registers, debug_async and debug_periodic field from ehci_hcd struct since they are useless now. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: Add USB 2.0 to ssb ohci driverHauke Mehrtens1-3/+49
This adds USB 2.0 support to ssb ohci driver. This patch was used in OpenWRT for a long time now. CC: Steve Brown <sbrown@cortland.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: cp210x: Add four new device IDsAlessio Igor Bogani1-0/+4
Signed-off-by: Alessio Igor Bogani <abogani@texware.it> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: ftdi_sio: device id for Navitatordranch@trinnet.net2-0/+8
This patch is to add a US Interface, Inc. "Navigator" USB device. Specifically, it's a HAM Radio USB sound modem that also incorporates three pairs of unique FTDI serial ports. The standard Linux FTDI serial driver will only recognize the first two serial ports of an unknown FDTI derived device and this patch adds in recognition to these specific new IDs. Signed-off-by: David A. Ranch <dranch@trinnet.net> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: accept RNDIS configs if there's no alternativeAlan Stern1-1/+3
This patch (as1410) makes a slight change to the strategy used for choosing a default configuration. Currently we skip configs whose first interface is RNDIS, if the kernel wasn't built with the corresponding driver. This risks losing access to the other interfaces in those configs. In addition, if there is only one config then we will end up not configuring the device at all. This changes the logic; now such configurations will be skipped only if there is at least one other config. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Adam Kropelin <akropel1@rochester.rr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: option: add huawei k3765 k4505 devices to work properlyAndrew Bird1-0/+11
This patch adds the product IDs of Huawei's K3765 and K4505 mobile broadband usb modems to option.c. It also adds a quirk to the option probe function so that binding to the device's network interface(class 0xff) is avoided. This is necessary to allow another driver to bind to that, and to avoid programs like wvdial opening a nonfunctioning tty during modem discovery. Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>