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* USB: mon_stat.c: move assignment out of if () blockGreg Kroah-Hartman2015-05-101-1/+2
| | | | | | | | | | We should not be doing assignments within an if () block so fix up the code to not do this. change was created using Coccinelle. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Felipe Balbi <balbi@ti.com>
* USB: mon_main.c: move assignment out of if () blockGreg Kroah-Hartman2015-05-101-4/+8
| | | | | | | | | | We should not be doing assignments within an if () block so fix up the code to not do this. change was created using Coccinelle. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Felipe Balbi <balbi@ti.com>
* USB: mon_bin.c: move assignment out of if () blockGreg Kroah-Hartman2015-05-101-3/+4
| | | | | | | | | | We should not be doing assignments within an if () block so fix up the code to not do this. change was created using Coccinelle. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Felipe Balbi <balbi@ti.com>
* USB: regroup all depends on USB within an if USB blockFlorian Fainelli2013-04-101-1/+0
| | | | | | | | | | | | This patch removes the depends on USB from all config symbols in drivers/usb/host/Kconfig and replace that with an if USB / endif block as suggested by Alan Stern. Some source ... Kconfig lines have been shuffled around to permit a better regroupment of the Kconfig files depending on "config USB" item. No functionnal change is introduced. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mm: kill vma flag VM_RESERVED and mm->reserved_vm counterKonstantin Khlebnikov2012-10-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA, currently it lost original meaning but still has some effects: | effect | alternative flags -+------------------------+--------------------------------------------- 1| account as reserved_vm | VM_IO 2| skip in core dump | VM_IO, VM_DONTDUMP 3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP 4| do not mlock | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP This patch removes reserved_vm counter from mm_struct. Seems like nobody cares about it, it does not exported into userspace directly, it only reduces total_vm showed in proc. Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP. remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP. remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP. [akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup] Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Carsten Otte <cotte@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Eric Paris <eparis@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Morris <james.l.morris@oracle.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: Matt Helsley <matthltc@us.ibm.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Venkatesh Pallipadi <venki@google.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* usb: Add export.h for EXPORT_SYMBOL/THIS_MODULE where neededPaul Gortmaker2011-11-013-0/+3
| | | | | | | | | | | | With module.h being implicitly everywhere via device.h, the absence of explicitly including something for EXPORT_SYMBOL went unnoticed. Since we are heading to fix things up and clean module.h from the device.h file, we need to explicitly include these files now. Use the lightweight version of the header that has just THIS_MODULE and EXPORT_SYMBOL variants. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* usbmon vs. tcpdump: fix dropped packet countJohannes Stezenbach2011-09-271-1/+1
| | | | | | | | | | | | | | | Report the number of dropped packets instead of zero when using the binary usbmon interface with tcpdump. # tcpdump -i usbmon1 -w dump tcpdump: listening on usbmon1, link-type USB_LINUX_MMAPPED (USB with padded Linux header), capture size 65535 bytes ^C2155 packets captured 2155 packets received by filter 1019 packets dropped by kernel Signed-off-by: Johannes Stezenbach <js@sig21.net> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: mon: Allow to use usbmon without debugfsTobias Klauser2011-07-081-3/+6
| | | | | | | | | | | | Do not bail out with an error in mon_text_init() if debugfs is not available, instead just return 0 and let mon_init() go ahead with loading the binary API. Return -ENOMEM in case debugfs_create_dir() fails for other reasons. Later, it is enough to check for mon_dir not set. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: fix-up docs and text API for sparse ISOPete Zaitcev2011-02-041-0/+3
| | | | | | | | | | | | | | This is based on a patch that Alan Stern wrote. It did the same simple thing in both text and binary cases. In the same time, Marton and I fixed the binary side properly, but this leaves the text to be fixed. It is not very important due to low maxium data size of text, but let's add it just for extra correctness. The pseudocode is too much to keep fixed up, and we have real code to be used as examples now, so let's drop it too. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'usb-next' into musb-mergeGreg Kroah-Hartman2010-12-161-3/+31
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * usb-next: (132 commits) USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path USB: uas: Ensure we only bind to a UAS interface USB: uas: Rename sense pipe and sense urb to status pipe and status urb USB: uas: Use kzalloc instead of kmalloc USB: uas: Fix up the Sense IU usb: musb: core: kill unneeded #include's DA8xx: assign name to MUSB IRQ resource usb: gadget: g_ncm added usb: gadget: f_ncm.c added usb: gadget: u_ether: prepare for NCM usb: pch_udc: Fix setup transfers with data out usb: pch_udc: Fix compile error, warnings and checkpatch warnings usb: add ab8500 usb transceiver driver USB: gadget: Implement runtime PM for MSM bus glue driver USB: gadget: Implement runtime PM for ci13xxx gadget USB: gadget: Add USB controller driver for MSM SoC USB: gadget: Introduce ci13xxx_udc_driver struct USB: gadget: Initialize ci13xxx gadget device's coherent DMA mask USB: gadget: Fix "scheduling while atomic" bugs in ci13xxx_udc USB: gadget: Separate out PCI bus code from ci13xxx_udc ...
| * usbmon: correct length for isochronousPete Zaitcev2010-12-011-3/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Usually the usbmon returns the amount of data specified in urb->transfer_buffer_length for output submissions and urb->actual_length for input callbacks. However, for Isochronous input transfers, this is not enough, since the returned data buffer may contain "holes". One easy way to fix this is to use urb->transfer_buffer_length, but this often transfers a whole lot of unused data, so we find how much was actually used instead. Original patch by Márton Németh. See also kernel bug 22182. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann2010-11-172-2/+0
|/ | | | | | | | | | The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-next' of ↵Linus Torvalds2010-10-241-2/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Update broken web addresses in arch directory. Update broken web addresses in the kernel. Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget Revert "Fix typo: configuation => configuration" partially ida: document IDA_BITMAP_LONGS calculation ext2: fix a typo on comment in ext2/inode.c drivers/scsi: Remove unnecessary casts of private_data drivers/s390: Remove unnecessary casts of private_data net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data drivers/infiniband: Remove unnecessary casts of private_data drivers/gpu/drm: Remove unnecessary casts of private_data kernel/pm_qos_params.c: Remove unnecessary casts of private_data fs/ecryptfs: Remove unnecessary casts of private_data fs/seq_file.c: Remove unnecessary casts of private_data arm: uengine.c: remove C99 comments arm: scoop.c: remove C99 comments Fix typo configue => configure in comments Fix typo: configuation => configuration Fix typo interrest[ing|ed] => interest[ing|ed] Fix various typos of valid in comments ... Fix up trivial conflicts in: drivers/char/ipmi/ipmi_si_intf.c drivers/usb/gadget/rndis.c net/irda/irnet/irnet_ppp.c
| * Merge branch 'master' into for-nextJiri Kosina2010-08-111-21/+3
| |\ | | | | | | | | | | | | Conflicts: fs/exofs/inode.c
| * | drivers/usb: Remove unnecessary return's from void functionsJoe Perches2010-08-101-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Greg prefers this to go through the trivial tree. http://lkml.org/lkml/2010/6/24/1 There are about 2500 void functions in drivers/usb Only a few used return; at end of function. Standardize them a bit. Moved a statement down a line in drivers/usb/host/u132-hcd.c Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | usb: makefile cleanupmatt mooney2010-10-221-1/+1
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | For all modules, change <module>-objs to <module>-y; remove if-statements and replace with lists using the kbuild idiom; move flags to the top of the file; and fix alignment while trying to maintain the original scheme in each file. None of the dependencies are modified. Signed-off-by: matt mooney <mfm@muteddisk.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | USB: resizing usbmon binary interface buffer causes protection faultsSteven Robertson2010-08-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enlarging the buffer size via the MON_IOCT_RING_SIZE ioctl causes general protection faults. It appears the culprit is an incorrect argument to mon_free_buff: instead of passing the size of the current buffer being freed, the size of the new buffer is passed. Use the correct size argument to mon_free_buff when changing the size of the buffer. Signed-off-by: Steven Robertson <steven@strobe.cc> Acked-by: Pete Zaitcev <zaitcev@redhat.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | USB: mon: kill BKL usageArnd Bergmann2010-08-101-20/+2
|/ | | | | | | | | | | | | | | | compat_ioctl does not use the BKL, so I assume that the native function does not need it either. The open function is already protected by the driver's mutex, the BKL is probably not needed here either. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'bkl/ioctl' of ↵Linus Torvalds2010-05-242-7/+19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing * 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing: uml: Pushdown the bkl from harddog_kern ioctl sunrpc: Pushdown the bkl from sunrpc cache ioctl sunrpc: Pushdown the bkl from ioctl autofs4: Pushdown the bkl from ioctl uml: Convert to unlocked_ioctls to remove implicit BKL ncpfs: BKL ioctl pushdown coda: Clean-up whitespace problems in pioctl.c coda: BKL ioctl pushdown drivers: Push down BKL into various drivers isdn: Push down BKL into ioctl functions scsi: Push down BKL into ioctl functions dvb: Push down BKL into ioctl functions smbfs: Push down BKL into ioctl function coda/psdev: Remove BKL from ioctl function um/mmapper: Remove BKL usage sn_hwperf: Kill BKL usage hfsplus: Push down BKL into ioctl function
| * drivers: Push down BKL into various driversArnd Bergmann2010-05-172-7/+19
| | | | | | | | | | | | | | | | | | | | | | | | These are the last remaining device drivers using the ->ioctl file operation in the drivers directory (except from v4l drivers). [fweisbec: drop i8k pushdown as it has been done from procfs pushdown branch already] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | USB: Change the scatterlist type in struct urbMatthew Wilcox2010-05-202-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the type of the URB's 'sg' pointer from a usb_sg_request to a scatterlist. This allows drivers to submit scatter-gather lists without using the usb_sg_wait() interface. It has the added benefit of removing the typecasts that were added as part of patch as1368 (and slightly decreasing the number of pointer dereferences). Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | USB: fix usbmon and DMA mapping for scatter-gather URBsAlan Stern2010-05-202-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1368) fixes a rather obscure bug in usbmon: When tracing URBs sent by the scatter-gather library, it accesses the data buffers while they are still mapped for DMA. The solution is to move the mapping and unmapping out of the s-g library and into the usual place in hcd.c. This requires the addition of new URB flag bits to describe the kind of mapping needed, since we have to call dma_map_sg() if the HCD supports native scatter-gather operation and dma_map_page() if it doesn't. The nice thing about having the new flags is that they simplify the testing for unmapping. The patch removes the only caller of usb_buffer_[un]map_sg(), so those functions are #if'ed out. A later patch will remove them entirely. As a result of this change, urb->sg will be set in situations where it wasn't set previously. Hence the xhci and whci drivers are adjusted to test urb->num_sgs instead, which retains its original meaning and is nonzero only when the HCD has to handle a scatterlist. Finally, even when a submission error occurs we don't want to hand URBs to usbmon before they are unmapped. The submission path is rearranged so that map_urb_for_dma() is called only for non-root-hub URBs and unmap_urb_for_dma() is called immediately after a submission error. This simplifies the error handling. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | USB: make hcd.h public (drivers dependency)Eric Lescouet2010-05-201-1/+2
|/ | | | | | | | | | | | | The usbcore headers: hcd.h and hub.h are shared between usbcore, HCDs and a couple of other drivers (e.g. USBIP modules). So, it makes sense to move them into a more public location and to cleanup dependency of those modules on kernel internal headers. This patch moves hcd.h from drivers/usb/core into include/linux/usb/ Signed-of-by: Eric Lescouet <eric@lescouet.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-304-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* USB: usbmon: mask seconds properly in text APIPete Zaitcev2010-03-021-1/+1
| | | | | | | | | | | | | The code does not implement the comment, so timestamps for long traces become confusing instead of wrapping neatly as expected. This was actually observed. Fortunately for API being in debugfs, we can just fix this instead of staying bug-for-bug compatible. Double fortunately, the stable binary API is not affected. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbmon: add bus number to text APIPete Zaitcev2010-03-022-3/+8
| | | | | | | | | | | | | | | | | Due to a simple oversight when bus zero was added, the text API fails to deliver the bus number in 'E' messages (which are equivalent of 'C' messages, only for error case). This makes it harder, for instance, use a search-and-highlight in a text editor. So fix it. Also, Alan Stern requested adding timestamps to 'E' messages. This is purely cosmetic, but makes it easier to read the trace. This is done for both text and binary APIs. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: add scatter-gather support to usbmonAlan Stern2009-12-112-12/+62
| | | | | | | | | | | | | This patch (as1301) adds support to usbmon for scatter-gather URBs. The text interface looks at only the first scatterlist element, since it never copies more than 32 bytes of data anyway. The binary interface copies as much data as possible up to the first non-addressable buffer. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: fix bug in mon_buff_area_shrinkAlan Stern2009-11-181-4/+7
| | | | | | | | | | | | | | | | | | | | | | This patch (as1299b) fixes a bug in an error-handling path of usbmon's binary interface. The storage area for URB data is divided into fixed-size blocks. If an URB's data can't be copied, the area reserved for it should be decreased to the size of the truncated information (rounded up to a block boundary). Rounding up the amount to be removed and subtracting it from the reserved size is definitely the wrong thing to do. Also, when the data for an isochronous URB can't be copied, we can still copy the isoc packet descriptors. In fact the current code does copy the descriptors, but then sets the capture length to 0 so they remain inaccessible. The capture length should be reduced to the length of the descriptors, not set to 0. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Pete Zaitcev <zaitcev@redhat.com> CC: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* const: mark struct vm_struct_operationsAlexey Dobriyan2009-09-271-1/+1
| | | | | | | | | | | * mark struct vm_area_struct::vm_ops as const * mark vm_ops in AGP code But leave TTM code alone, something is fishy there with global vm_ops being used. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* USB: usbmon: end ugly tricks with DMA peekingPete Zaitcev2009-09-236-136/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes crashes when usbmon attempts to access GART aperture. The old code attempted to take a bus address and convert it into a virtual address, which clearly was impossible on systems with actual IOMMUs. Let us not persist in this foolishness, and use transfer_buffer in all cases instead. I think downsides are negligible. The ones I see are: - A driver may pass an address of one buffer down as transfer_buffer, and entirely different entity mapped for DMA, resulting in misleading output of usbmon. Note, however, that PIO based controllers would do transfer the same data that usbmon sees here. - Out of tree drivers may crash usbmon if they store garbage in transfer_buffer. I inspected the in-tree drivers, and clarified the documentation in comments. - Drivers that use get_user_pages will not be possible to monitor. I only found one driver with this problem (drivers/staging/rspiusb). - Same happens with with usb_storage transferring from highmem, but it works fine on 64-bit systems, so I think it's not a concern. At least we don't crash anymore. Why didn't we do this in 2.6.10? That's because back in those days it was popular not to fill in transfer_buffer, so almost all traffic would be invisible (e.g. all of HID was like that). But now, the tree is almost 100% PIO friendly, so we can do the right thing at last. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: drop Kconfig defaultsPete Zaitcev2009-09-231-3/+1
| | | | | | | | | | | | These statements seem to be unnecessary. No idea why, but I built all possible configurations and everything gets built just as before. It's an old patch that popped from discussion with Paul in November 2008. Obviously not a very high priority but better late than never. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Fix virt_to_phys() warningsKevin Cernekee2009-07-061-1/+1
| | | | | | | | | | | | | | | | | | These warnings were observed on MIPS32 using 2.6.31-rc1 and gcc-4.2.0: mm/page_alloc.c: In function 'alloc_pages_exact': mm/page_alloc.c:1986: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast drivers/usb/mon/mon_bin.c: In function 'mon_alloc_buff': drivers/usb/mon/mon_bin.c:1264: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast [akpm@linux-foundation.org: fix kernel/perf_counter.c too] Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* USB: usbmon: use the new usb debugfs directoryGreg Kroah-Hartman2009-06-161-1/+1
| | | | | | | | All usb debugfs files should be behind the usb directory, not at the root of debugfs. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: Add binary API v1Pete Zaitcev2009-03-251-26/+116
| | | | | | | | | | This patch adds an extension to the binary API so it reaches parity with existing text API (so-called "1u"). The extension delivers additional data, such as ISO descriptors and the interrupt interval. Signed-Off-By: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: Implement compat_ioctlPete Zaitcev2009-01-281-39/+66
| | | | | | | | | | | | | | | | Running a 32-bit usbmon(8) on 2.6.28-rc9 produces the following: ioctl32(usbmon:28563): Unknown cmd fd(3) cmd(400c9206){t:ffffff92;sz:12} arg(ffd3f458) on /dev/usbmon0 It happens because the compatibility mode was implemented for 2.6.18 and not updated for the fsops.compat_ioctl API. This patch relocates the pieces from under #ifdef CONFIG_COMPAT into compat_ioctl with no other changes except one new whitespace. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Allow usbmon as a module even if usbcore is builtinPete Zaitcev2009-01-072-9/+7
| | | | | | | | | | | | | | | usbmon can only be built as a module if usbcore is a module too. Trivial changes to the relevant Kconfig and Makefile (and a few trivial changes elsewhere) allow usbmon to be built as a module even if usbcore is builtin. This is verified to work in all 9 permutations (3 correctly prohibited by Kconfig, 6 build a suitable result). Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: fix read(2)Pete Zaitcev2008-11-201-1/+4
| | | | | | | | | | | | | | | | | There's a bug in the usbmon binary reader: When using read() to fetch the packets and a packet's data is partially read, the next read call will once again return up to len_cap bytes of data. The b_read counter is not regarded when determining the remaining chunk size. So, when dumping USB data with "cat /dev/usbmon0 > usbmon.trace" while reading from a USB storage device and analyzing the dump file afterwards it will get out of sync after a couple of packets. Signed-off-by: Ingo van Lil <inguin@gmx.de> Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usbmon: fix tiny race exposed by the fastboot patchesArjan van de Ven2008-10-171-1/+1
| | | | | | | | | | | | | | | | | | usbmon registers the notifier chain, takes the bus lock and then goes to scan the existing devices for hooking up. Unfortunately, if usb_mon gets initialized while USB bus discovery is going on, it's possible that usbmon gets a notifier on one cpu (which runs without USB locks), and the scan is going on and also finds the new bus, resulting in a double sysfs registration, which then produces a WARNING. Pete Zaitcev did the bug diagnostics on this one Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: usb: convert device_create_drvdata to device_createGreg Kroah-Hartman2008-10-161-3/+3
| | | | | | | | Now that device_create() has been audited, rename things back to the original call to be sane. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* SL*B: drop kmem cache argument from constructorAlexey Dobriyan2008-07-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Kmem cache passed to constructor is only needed for constructors that are themselves multiplexeres. Nobody uses this "feature", nor does anybody uses passed kmem cache in non-trivial way, so pass only pointer to object. Non-trivial places are: arch/powerpc/mm/init_64.c arch/powerpc/mm/hugetlbpage.c This is flag day, yes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Matt Mackall <mpm@selenic.com> [akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c] [akpm@linux-foundation.org: fix mm/slab.c] [akpm@linux-foundation.org: fix ubifs] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* device create: usb: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-221-2/+3
| | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbmon: use simple_read_from_buffer()Akinobu Mita2008-07-221-12/+2
| | | | | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB Monitor: BKL pushdownJonathan Corbet2008-06-201-0/+6
| | | | | | Add explicit lock_kernel() calls to mon_bin_open() Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* usbmon: restore mmapPete Zaitcev2008-04-252-8/+4
| | | | | | | | | | | Paolo asked to enable the mmap. I kept it off because I'm do not entirely understand how it workse these days after ->nopage etc. But it seems like working somewhat at least. Signed-Off-By: Pete Zaitcev <zaitcev@gmail.com> Cc: Paolo Abeni <paolo.abeni@email.it> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Fix "cut and paste" booboo in usbmon Makefile.Robert P. J. Day2008-04-251-1/+1
| | | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Fix memory leak in mon_stat_releaseMing Lei2008-04-251-0/+3
| | | | | | | | | Fix the leak of the snap structure allocated in mon_stat_open(). Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: constify function pointer tablesJan Engelhardt2008-02-011-1/+1
| | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: mon nopageNick Piggin2008-02-011-9/+7
| | | | | | | | | | Convert USB mon driver from nopage to fault. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usb/mon/mon_bin.c: cleanupsAdrian Bunk2008-02-011-1/+5
| | | | | | | | | | | | | - make the needlessly global struct mon_fops_binary static - #if 0 the unused mon_bin_mmap() and related code Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Greg KH <greg@kroah.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Slab API: remove useless ctor parameter and reorder parametersChristoph Lameter2007-10-171-2/+2
| | | | | | | | | | | | | | | | | | | | | Slab constructors currently have a flags parameter that is never used. And the order of the arguments is opposite to other slab functions. The object pointer is placed before the kmem_cache pointer. Convert ctor(void *object, struct kmem_cache *s, unsigned long flags) to ctor(struct kmem_cache *s, void *object) throughout the kernel [akpm@linux-foundation.org: coupla fixes] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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