1. 18 Feb, 2004 8 commits
    • Alan Stern's avatar
      [PATCH] USB: Improve UHCI root hub code: descriptor, OC bits, etc. · 1345ad81
      Alan Stern authored
      This patch is from David Brownell.
      
      UHCI root hub updates ... minor bugfixes and cleanups, improving
      conformance with the USB hub specification.
      
       - UHCI doesn't support any kind of power switching; so modify the
         hub descriptor to stop claiming it does!  Likewise fail attempts
         to disable power on any port.
      
       - Intel defined both overcurrent status overcurrent-change bits, but
         the current code only knows about one.  Modify hub descriptor to
         report per-port overcurrent protection; and use both bits.
      
       - Modify the port status set/clear macros to know about the bits
         that must always be written as zero, and the write-to-clear bits.
         Update callers which wrote "set" instead of "clear".
      
       - Rewrote code returning port status; magic numbers are gone.
      
       - Driver can't really support 8 root hub ports; don't try.
      
      Also moves the #define DEBUG earlier so that it can kick in any of
      the various debug macros ... like pr_debug() and dev_dbg().
      1345ad81
    • David Brownell's avatar
      [PATCH] USB: ehci-hcd, scheduler handles TT collisions (3/3) · 8b290385
      David Brownell authored
      [USB] ehci-hcd detects microframe transaction scheduling collisions
      
      This detects TT schedule collisions for split periodic transactions
      on USB 2.0 hubs, handling both isochronous and interrupt transfers
      but not supporting the "wrap around to the next frame" modes for
      either transfer type.
      
      The ISO scheduler is modified to use that support for full speed
      transfers ... though nothing will yet ask it to do that.
      
      It also tracks schedule depth, to help avoid accepting ISO URBs
      which need more time than currently remains unscheduled.
      8b290385
    • David Brownell's avatar
      [PATCH] USB: ehci-hcd, fullspeed iso data structures (2/3) · 7c96943a
      David Brownell authored
      [USB] ehci, rename some iso data structures
      
      Rename some data and functions used by EHCI to manage ISO transactions,
      since they currently assume only high speed transfers.  Much of the same
      infrastructure will be used for full speed ISO, with split transactions.
      7c96943a
    • David Brownell's avatar
      [PATCH] USB: ehci-hcd, fullspeed iso data structures (1/3) · 4e5cd67f
      David Brownell authored
      [USB] start ehci split transaction support
      
      Updates split ISO transaction descriptor structure, add bitmask #defines;
      it's groundwork for full speed ISO support in EHCI.  Updates periodic
      schedule scanning, and bandwidth calculations accordingly.
      
      Fixes bandwidth calculation to behave when the periodic schedule has
      entries of multiple types ... as will be more common as ISO support
      starts to be used here.
      4e5cd67f
    • David Brownell's avatar
      [PATCH] USB: usbtest, two more protocol cases · 5a72e652
      David Brownell authored
      [USB] usbtest, two more control queueing subtests
      
       From Alan Stern.  This adds two more "short control read" test cases,
       both padding the "expected" transfer to end-of-packet.  We need both
       hosts and devices/gadgets to behave correctly here.
      5a72e652
    • David Brownell's avatar
      [PATCH] USB: usbcore, avoid RNDIS configs · 0405e99d
      David Brownell authored
      [USB] usbcore avoids RNDIS configuration.
      
      Modifies the "choose a configuration" heuristic to recognize the other
      case that 2.4 handled:  RNDIS, a MSFT protocol that's sometimes used as
      the first/default configuration (as specified by MSFT) on cable modems.
      CDC Ethernet is vendor-neutral, and preferred (except by MSFT).
      
      The initial version didn't catch RNDIS because it cloaks its ethernet
      links as a kind of CDC ACM (modem) device.
      0405e99d
    • David Brownell's avatar
      [PATCH] USB: usbcore, hub driver enables TT-per-port mode · e863e027
      David Brownell authored
      [USB] hub driver turns on multi-TT mode
      
      This turns on the multi-tt mode in hubs that support it; the Cypress
      "TetraHub" products are appearing at retail now, complete with some
      of the first Mini-B connectors I've seen shipping.
      
      This will be important for hooking up lots of full speed isochronous
      devices (audio, video, etc).
      e863e027
    • David Brownell's avatar
      [PATCH] USB: usbcore, scatterlist cleanups · 876b1343
      David Brownell authored
      [USB] minor usb_sg_wait() cleanups
      
        - count urb completions correctly when there's a non-recoverable
          fault during scatterlist submission ... prevents a hang (seen
          only with already-faulty usb-storage devices).
      
        - don't local_irq_{save,restore}() when not needed
      876b1343
  2. 17 Feb, 2004 14 commits
    • Deepak Saxena's avatar
      6bbdfe17
    • Alan Stern's avatar
      [PATCH] USB Storage: unusual_devs.h fixup · aa2716ec
      Alan Stern authored
      On 15 Feb 2004, Frank D. Cringle wrote:
      
      > Hi,
      >
      > my syslog requests that I send this message.  See below regarding
      > usb-storage: This device ... has an unneeded SubClass entry in unusual_devs.h
      
      > Feb 15 00:11:16 dagger usb-storage: This device (07cf,1001,1000 S 05 P 00) has an unneeded SubClass entry in unusual_devs.h
      > Feb 15 00:11:16 dagger Please send a copy of this message to <linux-usb-devel@lists.sourceforge.net>
      
      Thank you for sending this in.
      
      Greg, it looks like an earlier patch changed too much.  Here is the fix.
      Also included in this patch:
      
      	Moved several entries that were in the wrong positions.
      
      	Removed an entry (0x08ca, 0x2011) that could never be used
      	because the preceding entry always would take precedence.
      aa2716ec
    • Matthew Dharm's avatar
      [PATCH] USB Storage: Fix small endian-ness bug · 99e0e5d4
      Matthew Dharm authored
      This patch fixes up a small endian-ness bug from mid-January.
      99e0e5d4
    • Matthew Dharm's avatar
      [PATCH] USB Storage: Reduce unsolicited auto-sense · fac8bc14
      Matthew Dharm authored
      This patch (a regeneration of as185) reduces the amount of auto-sensing we
      do even further.  It also zeros-out the sense buffer in those cases where
      we do auto-sense and get back no error.
      fac8bc14
    • Matthew Dharm's avatar
      [PATCH] USB Storage: Save the SCSI residue value when auto-sensing · 07bfe587
      Matthew Dharm authored
      This patch (a regeneration of as173) saves the residue value of a command
      when doing an auto-sense.
      
      Not that it really matters much -- almost nobody looks at that value.  But
      it's definately incorrect the way it is, and this fixes it.
      07bfe587
    • Alan Stern's avatar
      [PATCH] USB Storage: Reduce auto-sensing for CB transport · 35f751d9
      Alan Stern authored
      This patch addresses a problem common among digital cameras that use the
      CB transport.  Namely, too much auto-sensing confuses them; particularly
      auto-sensing after INQUIRY.
      
      I've made some traces of a Windows 2000 driver to see what it does (data
      sent to Andries Brouwer for inclusion on his web site; I'll announce
      when it's ready for viewing).  Basically, it almost never sends REQUEST
      SENSE unless it received a STALL from the device.
      
      That's a pretty bogus way to operate, because it means that Windows has no
      way to tell when the device has finished executing a command if the
      command doesn't involve an IN transfer.  Even after a lengthy WRITE,
      Windows continues to transmit more commands without regard for whether or
      not they will get overwritten in the device's internal buffer (and hence
      not executed).  Indeed, exactly that happened with some of the commands in
      one of my traces.
      
      To be safe, we must follow every non-IN transfer with an auto-sense, but
      IN transfers that don't stall can be considered to have succeeded.
      That's what this patch does.  It reduces auto-sensing by a considerable
      factor, probably close to half.  It also fixes the problem with INQUIRY,
      since INQUIRY involves an IN data transfer.
      35f751d9
    • Alan Stern's avatar
      [PATCH] USB Storage: Treat STALL as failure for CB[I] · 8e2c8a8a
      Alan Stern authored
      I recall something like this had to be changed a while ago, but it looks
      like it's still not right.  A STALL during either the command or data
      phase of a CB[I] command should indicate a failure.
      8e2c8a8a
    • Alan Stern's avatar
      [PATCH] USB Storage: Handle excess 0-length data packets · 933d87fc
      Alan Stern authored
      This patch is an attempt to cope with Genesys Logic's, shall we say,
      creative approach to implementing the USB protocols.  Their high-speed
      mass storage devices sometimes add an excess 0-length packet to the end of
      a data phase transmission.  Of course we don't read that packet as part of
      the data phase; we see it as a 0-length CSW message.  The real CSW follows
      immediately after.  (Or sometimes a STALL follows immediately after, with
      the real CSW coming after that!)
      
      The patch checks the results of the first attempt to read the CSW.  If it
      sees a normal packet (not a STALL) with length 0, it retries the read.
      Reports from two users indicate that it improves the performance of their
      USB-2 DVD drives.
      933d87fc
    • Alan Stern's avatar
      [PATCH] USB: Mask "HC Halted" bit in the UHCI status register · 77d9c334
      Alan Stern authored
      Contrary to the UHCI specification document, in real controllers the "HC
      Halted" bit in the status register cannot be cleared by writing a 1.  It
      will persist for as long as the controller is halted.  Hence the bit needs
      to be masked away before checking whether or not the controller initiated
      an interrupt.
      
      Without this patch, other devices sharing the same IRQ line might not get
      serviced while the host controller is suspended, because the always-on
      status bit would cause the UHCI driver to report that it had handled the
      interrupt.
      77d9c334
    • Alan Stern's avatar
      [PATCH] USB: Simplify locking in UHCI · fec5dce2
      Alan Stern authored
      This patch is an amalgam of 9 contributions from Stephen Hemminger.  It
      begins the process of straightening out the use of semaphores and locking
      in the UHCI driver by removing unneeded irqsaves and irqrestores.  It
      also removes an unnecessary list node and makes a couple of other small
      changes.
      
      
      
      clear_next_interrupt only called in IRQ context don't need irqsave/restore
      
      Since uhci_finish_completion is only called from IRQ routine,
      the irqsave/irqrestore is redundant and unnecessary.
      
      UHCI transfer_result is only called from IRQ context
      so irqsave/restore is unnecessary here.
      
      uhci_finish_urb is always called from irq so
      no need for irqsave/irqrestore.
      
      uhci_add_complete only called from IRQ context
      
      The complete_list element in the urb private data is redundant,
      since it is only used when the urb is on the complete list.
      And given the state transitions, an urb can't be on the complete list
      and any other list (remove, or urb_list).
      Therefore just use urb_list to link the complete_list
      
      Use list_move_tail to move between remove (or urb_list) and the complete_list.
      
      Save irq state in uhci_stop so that the irqsave/irqrestore's
      in all the free_pending and remove_pending code can be eliminated.
      
      Since uhci_stop now saves IRQ state, the free/remove pending routines
      no longer need irqsave/irqrestore.
      fec5dce2
    • Alan Stern's avatar
      [PATCH] USB: ERRBUF_LEN compiling error when PAGE_SIZE=64KB on IA64 · eaf5fbc4
      Alan Stern authored
      Randy, thanks for forwarding this to me.
      
      > Johannes,
      >
      > When I compile base kernel 2.6.1 with PAGE_SIZE=64KB on an IA64
      > platform, there is an error.
      >   CC      init/version.o
      >   LD      init/built-in.o
      >   LD      .tmp_vmlinux1
      > drivers/built-in.o(.init.text+0x168a2): In function `uhci_hcd_init':
      > : undefined reference to `__you_cannot_kmalloc_that_much'
      > make: *** [.tmp_vmlinux1] Error 1
      >
      > That's because ERRBUF_LEN (equal to PAGE_SIZE*8) is too long when
      > PAGE_SIZE=64KB. Actually, there was a similar error found by Tony. See
      > http://marc.theaimsgroup.com/?l=linux-ia64&m=105604765306485&w=2.
      >
      > Could you change the definition of ERRBUF_LEN to a fixed value? For
      > example, 32*1024?
      >
      > Yanmin
      
      Yanmin, I'm the new maintainer for the UHCI driver.  Yep, that's a
      definite error.  This will fix it.
      
      Also included in this patch: change some confusing references from "high
      speed" to "full speed" and add proper hyphenation.
      eaf5fbc4
    • Alan Stern's avatar
      [PATCH] USB: Even out distribution of UHCI interrupt transfers · 4f650496
      Alan Stern authored
      This patch evens out the distribution of interrupt transfers for the UHCI
      driver.  It insures that no frame must handle interrupt queues for more
      than two different periods, thus improving the bandwidth utilization.
      
      It also simplifies the initialization code by replacing a multi-nested
      "if" statement with a simple bit-operation (thanks to Eric Piel for
      suggesting this approach).
      4f650496
    • Alan Stern's avatar
      [PATCH] USB: Remove unneeded and error-provoking variable in UHCI · a0afbda3
      Alan Stern authored
      This patch removes an unneeded "status" field from the UHCI driver's
      URB-private data structure.  The driver had been storing the status of
      completed URBs there rather than in the URBs themselves.  This not only is
      wasteful of space but is also a cause of bugs, since the USB core relies
      on urb->status for proper synchronization with the driver.
      
      The patch also takes care of a number of small things that have been
      bugging me for ages:
      
      	Close a small loophole by allowing an URB to be unlinked even
      	before the uhci_urb_enqueue() procedure has started.
      
      	Remove some fossil code from back when interrupt URBs were
      	automagically resubmitted.
      
      	Giveback unlinked URBs in the order they were unlinked.
      
      	Don't set urb->status for dequeued URBs; the core has already
      	set it for us.
      
      	Rename uhci_remove_pending_qhs to uhci_remove_pending_urbps.
      	(That has _really_ bothered me!)
      a0afbda3
    • Domen Puncer's avatar
      [PATCH] USB: some stv680 fixes · 932d19c4
      Domen Puncer authored
      - swapRGB is already initialized to 0
      - change "swapRGB_on == 1" to match in-source documentation
      - submit urb with GFP_ATOMIC (interrupt context) - this made driver
         unusable because of "might_sleep" messages.
      - group some "case"s
      - release vdev on fail
      - remove "kfree(0)" checking
      932d19c4
  3. 16 Feb, 2004 18 commits
    • Ian Abbott's avatar
      [PATCH] USB: ftdi_sio new PIDs and name fix for sysfs · 8dde8bf3
      Ian Abbott authored
      This patch adds a couple of new PIDs for the ftdi_sio driver and
      changes the name of the USB-UIRT device to avoid the "/" character,
      as that appears as a directory separator in the sysfs namespace.
      8dde8bf3
    • Paulo Marques's avatar
      [PATCH] USB: fix usblp.c · 5baa19b3
      Paulo Marques authored
      The line that IMHO triggers the bug is this:
      
      "writecount += usblp->writeurb->transfer_buffer_length;"
      
      It uses "usblp->writeurb->transfer_buffer_length" before initializing it,
      assuming that it will be zero on the first run. If it is not zero, but instead
      random *negative* garbage from memory, the loop will start printing endless data
      from user-space data.
      5baa19b3
    • David Brownell's avatar
      [PATCH] USB: EHCI updates (mostly periodic schedule scanning) · 2a62f1e1
      David Brownell authored
      [USB] EHCI updates
      
      Update periodic schedule scanning
      	- fix shutdown sometimes-hangs (Bernd Porr)
      	- resolve the "whole frame at once" FIXME
      	- try harder to avoid rescanning
      	- don't delegate interrupt qh handling to a buggy helper routine
      	- describe more of the relevant iso tuning parameters
      
      One-liners:
      	- URB_NO_INTERRUPT hint affects ISO
      	- show correct data toggle in sysfs debug files
      	- FIXME is resolved by Linus' 20msec delay
      2a62f1e1
    • Bartlomiej Zolnierkiewicz's avatar
      [PATCH] make __ide_dma_off() generic and remove ide_hwif_t->ide_dma_off · d9bb5003
      Bartlomiej Zolnierkiewicz authored
      Move ide-dma.c:__ide_dma_off() outside of #ifdef CONFIG_BLK_DEV_IDEDMA_PCI,
      so it can be used for all DMA capable hosts.  Remove ide_hwif_t->ide_dma_off.
      d9bb5003
    • Bartlomiej Zolnierkiewicz's avatar
      [PATCH] remove __ide_dma_count() and ide_hwif_t->ide_dma_count · 22e84a6b
      Bartlomiej Zolnierkiewicz authored
      ->ide_dma_count() was introduced in kernel 2.5.35 and was meant to add support
      for host FIFO counters (for VDMA), but is only a wrapper for ->ide_dma_begin()
      (even for siimage.c b/c SIIMAGE_VIRTUAL_DMAPIO is undefined).
      
      Moreover it should be possible to add VDMA code directly to ->ide_dma_begin().
      22e84a6b
    • Bartlomiej Zolnierkiewicz's avatar
      [PATCH] remove ide_dma_{good,bad}_drive from ide_hwif_t · 6e14119e
      Bartlomiej Zolnierkiewicz authored
      Use __ide_dma_{good,bad}_drive() directly and remove these wrappers.
      6e14119e
    • Bartlomiej Zolnierkiewicz's avatar
      [PATCH] ide-tape: warn about soon to be removed OnStream support · 1e99d97a
      Bartlomiej Zolnierkiewicz authored
      I see only pros of removing OnStream support:
       - SCSI osst.c driver is actively maintained by Willem Riede <wrlk@riede.org>
       - there is no functionality loss (OnStream IDE drives don't support DSC)
       - ide-tape.c driver is too ugly & complicated even without OnStream support
       - long term benefits (2.7.x plans on unifying storage drivers)
      1e99d97a
    • Bartlomiej Zolnierkiewicz's avatar
      [PATCH] ide-tape: fix "sleeping function called from invalid context" · e38bead1
      Bartlomiej Zolnierkiewicz authored
      From: Willem Riede <wrlk@riede.org>
      e38bead1
    • Bartlomiej Zolnierkiewicz's avatar
      [PATCH] fix OOPS on non-DMA IDE hosts with CONFIG_BLK_DEV_IDEDMA=y · 49dd3fd8
      Bartlomiej Zolnierkiewicz authored
      From: Glenn Wurster <gwurster@scs.carleton.ca>
      49dd3fd8
    • Linus Torvalds's avatar
      f1bdede0
    • Benjamin Herrenschmidt's avatar
      [PATCH] Small typo in aty128fb · 7461d903
      Benjamin Herrenschmidt authored
      This fixes a small merge error in aty128fb resulting in a compile
      failure. 
      7461d903
    • Andrew Morton's avatar
      [PATCH] SELinux: Fix error handling bug. · b01d7ca3
      Andrew Morton authored
      From: James Morris <jmorris@redhat.com>
      
      The patch below fixes an error handling flaw, where we need to return a
      Netfilter verdict from the function rather than a standard error code.
      b01d7ca3
    • Andrew Morton's avatar
      [PATCH] selinux: mark avc_init with __init · e76445c8
      Andrew Morton authored
      From: James Morris <jmorris@redhat.com>
      
      The avc_init function is only called during kernel init, so it can be
      marked with __init.
      e76445c8
    • Andrew Morton's avatar
      [PATCH] selinux: Allow non-root processes to read selinuxfs enforce node · fa419e62
      Andrew Morton authored
      From: Stephen Smalley <sds@epoch.ncsc.mil>
      
      This patch changes the mode bits on the selinuxfs enforce node so that
      non-root processes can read it.  This is necessary to allow non-root
      userspace policy enforcers to check the enforcing flag upon a permission
      failure as well.  A process must still have the appropriate SELinux
      permission in order to read the node.
      fa419e62
    • Andrew Morton's avatar
      [PATCH] devfs do_mount fix · b9164789
      Andrew Morton authored
      From: James Morris <jmorris@redhat.com>
      
      devfs is passing an empty string to do_mount when it expects a page.
      b9164789
    • Andrew Morton's avatar
      [PATCH] SELinux: context mount support - SELinux changes. · 0ce03642
      Andrew Morton authored
      From: James Morris <jmorris@redhat.com>
      
      This patch implements context mount support within SELinux.
      
      Three new mount options are provided:
      
      context=%s
        Label the entire filesystem with the specified security context during
        mount and change the labeling behavior to 'mountpoint labeling'.  The
        /proc/self/attr/fscreate attribute will be ignored for file creation on
        the filesystem, although policy-specified transitions will still work
        normally.  This also sets the aggregate filesystem security context.
      
      fscontext=%s
        Set the label of the aggregate filesystem to the specified security
        context, so that SELinux policy controls over the filesystem itself may
        be reinstated.  Only works for filesystems without EA labeling support,
        and is not valid if 'context' has been specified.
      
      defcontext=%s
        Set the default security context for files created in this filesystem to
        the specified security context (as opposed to the current global default).
        Only works for filesystems without EA labeling support, and is not
        valid if 'context' has been specified.
      
      To set the context or fscontext options, the security policy must specify
      appropriate permissions for the filesystem relabelfrom and filesystem
      relabelto controls.  For the defcontext option, the filesystem relablefrom
      and filesystem assoicate controls are invoked.
      
      The security mount options are parsed out and stripped from the normal
      mount option data so that no normal filesystems need to be aware of them.
      
      Filesystems with binary mount option data (e.g. NFS, SMBFS, AFS, Coda)
      need to be handled as special cases: only NFS is supprted at this stage
      per the previous patch.
      0ce03642
    • Andrew Morton's avatar
      [PATCH] SELinux: context mount support - NFS · 79352ac6
      Andrew Morton authored
      From: James Morris <jmorris@redhat.com>
      
      This patch modifies the kernel's NFS mount data structure to include SELinux
      context mount data.  It allows NFS fileystems to be labeled on a
      per-mountpoint basis, and should not affect existing versions of userspace
      mount.
      
      (A patch to the userspace mount code is available at
      http://people.redhat.com/jmorris/selinux/context_mounts/)
      79352ac6
    • Andrew Morton's avatar
      [PATCH] SELinux: context mount support - LSM/FS · 86d3ef68
      Andrew Morton authored
      From: James Morris <jmorris@redhat.com>
      
      This series of patches adds support for SELinux 'context mounts', which
      allows filesystems to be assigned security context information at mount time.
       For example, some filesystems do not support extended attributes (e.g.  NFS,
      vfat), and this feature allows security contexts to be assigned to them on a
      per-mountpoint basis.  It is also useful when the existing labeling on a
      filesystem is untrusted or unwanted for some reason (e.g.  removable media),
      and needs to be overridden with a safe default.
      
      The first patch below consists of infrastructure changes to the kernel:
      
      - A new LSM hook has been added, sb_copy_data, which allows the security
        module to copy security-specific mount data once the superblock has been
        setup by the filesystem.
      
      - The sb_kern_mount hook has been modified to take this security data as a
        parameter, and would typically be used at that point to configure the
        security parameters of the filesystem being mounted.
      
      - Allocation and freeing of the security data has been implemented in the
        core fs code as it is cleaner than trying to do it purely via LSM hooks,
        and should make maintenance easier.  This code will be compiled away if LSM
        is not enabled.
      86d3ef68