- Nov 17, 2009
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H. Peter Anvin authored
The 32- and 64-bit code used very different mechanisms for enabling NX, but even the 32-bit code was enabling NX in head_32.S if it is available. Furthermore, we had a bewildering collection of tests for the available of NX. This patch: a) merges the 32-bit set_nx() and the 64-bit check_efer() function into a single x86_configure_nx() function. EFER control is left to the head code. b) eliminates the nx_enabled variable entirely. Things that need to test for NX enablement can verify __supported_pte_mask directly, and cpu_has_nx gives the supported status of NX. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Cc: Tejun Heo <tj@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Chris Wright <chrisw@sous-sol.org> LKML-Reference: <1258154897-6770-5-git-send-email-hpa@zytor.com> Acked-by:
Kees Cook <kees.cook@canonical.com>
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H. Peter Anvin authored
Make set_memory_x/set_memory_nx directly aware of if NX is supported in the system or not, rather than requiring that every caller assesses that support independently. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Tejun Heo <tj@kernel.org> Cc: Tim Starling <tstarling@wikimedia.org> Cc: Hannes Eder <hannes@hanneseder.net> LKML-Reference: <1258154897-6770-4-git-send-email-hpa@zytor.com> Acked-by:
Kees Cook <kees.cook@canonical.com>
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H. Peter Anvin authored
Always save the value of EFER, regardless of the state of NX. Since EFER may not actually exist, use rdmsr_safe() to do so. v2: check the return value from rdmsr_safe() instead of relying on the output values being unchanged on error. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Acked-by:
Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@tuxonice.net> LKML-Reference: <1258154897-6770-3-git-send-email-hpa@zytor.com> Acked-by:
Kees Cook <kees.cook@canonical.com>
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H. Peter Anvin authored
Use symbolic constants rather than hard-coded values when setting EFER.NX in head_32.S, and do a more rigorous test for the validity of the response when probing for the extended CPUID range. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> LKML-Reference: <1258154897-6770-2-git-send-email-hpa@zytor.com> Acked-by:
Kees Cook <kees.cook@canonical.com>
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- Nov 12, 2009
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Yinghai Lu authored
Instead of using bootmem, try find_e820_area()/reserve_early(), and call acpi_reserve_memory() early, to allocate the wakeup trampoline code area below 1M. This is more reliable, and it also removes a dependency on bootmem. -v2: change function name to acpi_reserve_wakeup_memory(), as suggested by Rafael. Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Acked-by:
H. Peter Anvin <hpa@zytor.com> Acked-by:
Rafael J. Wysocki <rjw@sisk.pl> Cc: pm list <linux-pm@lists.linux-foundation.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4AFA210B.3020207@kernel.org> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Nov 08, 2009
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Randy Dunlap authored
k8.h uses struct bootnode but does not #include a header file for it, so provide a simple declaration for it. arch/x86/include/asm/k8.h:13: warning: 'struct bootnode' declared inside parameter list arch/x86/include/asm/k8.h:13: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Acked-by:
David Rientjes <rientjes@google.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> LKML-Reference: <20091028160955.d27ccb16.randy.dunlap@oracle.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Nov 03, 2009
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Suresh Siddha authored
set_kernel_text_rw()/set_kernel_text_ro() are marking pages starting from _text to __start_rodata as RW or RO. With CONFIG_DEBUG_RODATA, there might be free pages (associated with padding the sections to 2MB large page boundary) between text and rodata sections that are given back to page allocator. So we should use only use the start (__text) and end (__stop___ex_table) of the text section in set_kernel_text_rw()/set_kernel_text_ro(). Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Acked-by:
Steven Rostedt <rostedt@goodmis.org> Tested-by:
Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20091029024821.164525222@sbs-t61.sc.intel.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Suresh Siddha authored
On x86_64, kernel text mappings are mapped read-only with CONFIG_DEBUG_RODATA. So use the kernel identity mapping instead of the kernel text mapping to modify the kernel text. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Acked-by:
Steven Rostedt <rostedt@goodmis.org> Tested-by:
Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20091029024821.080941108@sbs-t61.sc.intel.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Suresh Siddha authored
Steven Rostedt reported that we are unconditionally making the kernel text mapping as read-only. i.e., if someone does cpa() to the kernel text area for setting/clearing any page table attribute, we unconditionally clear the read-write attribute for the kernel text mapping that is set at compile time. We should delay (to forbid the write attribute) and enforce only after the kernel has mapped the text as read-only. Reported-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Acked-by:
Steven Rostedt <rostedt@goodmis.org> Tested-by:
Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20091029024820.996634347@sbs-t61.sc.intel.com> [ marked kernel_set_to_readonly as __read_mostly ] Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Oct 28, 2009
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Steven Rostedt authored
The commit 74e08179 x86-64: align RODATA kernel section to 2MB with CONFIG_DEBUG_RODATA prevents text sections from becoming read/write using set_memory_rw. The dynamic ftrace changes all text pages to read/write just before converting the calls to tracing to nops, and vice versa. I orginally just added a flag to allow this transaction when ftrace did the change, but I also found that when the CPA testing was running it would remove the read/write as well, and ftrace does not do the text conversion on boot up, and the CPA changes caused the dynamic tracer to fail on self tests. The current solution I have is to simply not to prevent change_page_attr from setting the RW bit for kernel text pages. Reported-by:
Ingo Molnar <mingo@elte.hu> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Steven Rostedt <rostedt@goodmis.org>
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- Oct 24, 2009
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Alexander Potashev authored
A single 'movl' is shorter than the 'xorl'-'orl' pair. No change in behaviour. Signed-off-by:
Alexander Potashev <aspotashev@gmail.com> LKML-Reference: <1256341043-4928-1-git-send-email-aspotashev@gmail.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Oct 23, 2009
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Minchan Kim authored
commit cc9f7a0c changed add_one_highpage_init. We don't use pfn any more. Let's remove unnecessary argument. This patch doesn't chage function behavior. This patch is based on v2.6.32-rc5. Signed-off-by:
Minchan Kim <minchan.kim@gmail.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> LKML-Reference: <20091022112722.adc8e55c.minchan.kim@barrios-desktop> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Oct 20, 2009
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Suresh Siddha authored
Add a comment explaining why RODATA is aligned to 2 MB. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com>
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Suresh Siddha authored
CONFIG_DEBUG_RODATA chops the large pages spanning boundaries of kernel text/rodata/data to small 4KB pages as they are mapped with different attributes (text as RO, RODATA as RO and NX etc). On x86_64, preserve the large page mappings for kernel text/rodata/data boundaries when CONFIG_DEBUG_RODATA is enabled. This is done by allowing the RODATA section to be hugepage aligned and having same RWX attributes for the 2MB page boundaries Extra Memory pages padding the sections will be freed during the end of the boot and the kernel identity mappings will have different RWX permissions compared to the kernel text mappings. Kernel identity mappings to these physical pages will be mapped with smaller pages but large page mappings are still retained for kernel text,rodata,data mappings. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <20091014220254.190119924@sbs-t61.sc.intel.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com>
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Suresh Siddha authored
In the first 2MB, kernel text is co-located with kernel static page tables setup by head_64.S. CONFIG_DEBUG_RODATA chops this 2MB large page mapping to small 4KB pages as we mark the kernel text as RO, leaving the static page tables as RW. With CONFIG_DEBUG_RODATA disabled, OLTP run on NHM-EP shows 1% improvement with 2% reduction in system time and 1% improvement in iowait idle time. To recover this, move the kernel static page tables to .data section, so that we don't have to break the first 2MB of kernel text to small pages with CONFIG_DEBUG_RODATA. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <20091014220254.063193621@sbs-t61.sc.intel.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com>
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- Oct 13, 2009
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David Rientjes authored
Add interleaved NUMA emulation support This patch interleaves emulated nodes over the system's physical nodes. This is required for interleave optimizations since mempolicies, for example, operate by iterating over a nodemask and act without knowledge of node distances. It can also be used for testing memory latencies and NUMA bugs in the kernel. There're a couple of ways to do this: - divide the number of emulated nodes by the number of physical nodes and allocate the result on each physical node, or - allocate each successive emulated node on a different physical node until all memory is exhausted. The disadvantage of the first option is, depending on the asymmetry in node capacities of each physical node, emulated nodes may substantially differ in size on a particular physical node compared to another. The disadvantage of the second option is, also depending on the asymmetry in node capacities of each physical node, there may be more emulated nodes allocated on a single physical node as another. This patch implements the second option; we sacrifice the possibility that we may have slightly more emulated nodes on a particular physical node compared to another in lieu of node size asymmetry. [ Note that "node capacity" of a physical node is not only a function of its addressable range, but also is affected by subtracting out the amount of reserved memory over that range. NUMA emulation only deals with available, non-reserved memory quantities. ] We ensure there is at least a minimal amount of available memory allocated to each node. We also make sure that at least this amount of available memory is available in ZONE_DMA32 for any node that includes both ZONE_DMA32 and ZONE_NORMAL. This patch also cleans the emulation code up by no longer passing the statically allocated struct bootnode array among the various functions. This init.data array is not allocated on the stack since it may be very large and thus it may be accessed at file scope. The WARN_ON() for nodes_cover_memory() when faking proximity domains is removed since it relies on successive nodes always having greater start addresses than previous nodes; with interleaving this is no longer always true. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Ankita Garg <ankita@in.ibm.com> Cc: Len Brown <len.brown@intel.com> LKML-Reference: <alpine.DEB.1.00.0909251519150.14754@chino.kir.corp.google.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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David Rientjes authored
This is the counterpart to "x86: export k8 physical topology" for SRAT. It is not as invasive because the acpi code already seperates node setup into detection and registration steps, with the exception of registering e820 active regions in acpi_numa_memory_affinity_init(). This is now moved to acpi_scan_nodes() if NUMA emulation is disabled or deferred. acpi_numa_init() now returns a value which specifies whether an underlying SRAT was located. If so, that topology can be used by the emulation code to interleave emulated nodes over physical nodes or to register the nodes for ACPI. acpi_get_nodes() may now be used to export the srat physical topology of the machine for NUMA emulation. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Ankita Garg <ankita@in.ibm.com> Cc: Len Brown <len.brown@intel.com> LKML-Reference: <alpine.DEB.1.00.0909251518580.14754@chino.kir.corp.google.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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David Rientjes authored
To eventually interleave emulated nodes over physical nodes, we need to know the physical topology of the machine without actually registering it. This does the k8 node setup in two parts: detection and registration. NUMA emulation can then used the physical topology detected to setup the address ranges of emulated nodes accordingly. If emulation isn't used, the k8 nodes are registered as normal. Two formals are added to the x86 NUMA setup functions: `acpi' and `k8'. These represent whether ACPI or K8 NUMA has been detected; both cannot be true at the same time. This specifies to the NUMA emulation code whether an underlying physical NUMA topology exists and which interface to use. This patch deals solely with separating the k8 setup path into Northbridge detection and registration steps and leaves the ACPI changes for a subsequent patch. The `acpi' formal is added here, however, to avoid touching all the header files again in the next patch. This approach also ensures emulated nodes will not span physical nodes so the true memory latency is not misrepresented. k8_get_nodes() may now be used to export the k8 physical topology of the machine for NUMA emulation. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Ankita Garg <ankita@in.ibm.com> Cc: Len Brown <len.brown@intel.com> LKML-Reference: <alpine.DEB.1.00.0909251518400.14754@chino.kir.corp.google.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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David Rientjes authored
Convert all printk's in arch/x86/mm/k8topology_64.c to use pr_info() or pr_err() appropriately. Adds log levels for messages currently lacking them. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Ankita Garg <ankita@in.ibm.com> Cc: Len Brown <len.brown@intel.com> LKML-Reference: <alpine.DEB.1.00.0909251517440.14754@chino.kir.corp.google.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Oct 12, 2009
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Linus Torvalds authored
This reverts commit db8be50c , as per http://bugzilla.kernel.org/show_bug.cgi?id=14374 http://marc.info/?l=linux-kernel&m=125446885705223&w=4 We simply can't do the USB handoff at FIXUP_HEADER time, since it will often require us to have valid IO mappings etc. But that in turn requires a whole different approach, not this trivial one-liner. Maybe we could teach all the USB quirk handoff handlers to only do the quirk if the device has all its registers set up (since if it isn't initialized, it's unlikely to be active), but regardless that will need a whole lot more code than just saying "let's do it really early". The proper fix is almost certainly to just leave the legacy IOMMU mappings active until after all devices have been initialized. Reported-by:
Nick Piggin <npiggin@suse.de> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
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Yinghai Lu authored
As reported in http://bugzilla.kernel.org/show_bug.cgi?id=13940 on some system when acpi are enabled, acpi clears some BAR for some devices without reason, and kernel will need to allocate devices for them. It then apparently hits some undocumented resource conflict, resulting in non-working devices. Try to increase alignment to get more safe range for unassigned devices. Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds authored
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits) [S390] dasd: fix race condition in resume code [S390] Add EX_TABLE for addressing exception in usercopy functions. [S390] 64-bit register support for 31-bit processes [S390] hibernate: Use correct place for CPU address in lowcore [S390] pm: ignore time spend in suspended state [S390] zcrypt: Improve some comments [S390] zcrypt: Fix sparse warning. [S390] perf_counter: fix vdso detection [S390] ftrace: drop nmi protection [S390] compat: fix truncate system call wrapper [S390] Provide arch specific mdelay implementation. [S390] Fix enabled udelay for short delays. [S390] cio: allow setting boxed devices offline [S390] cio: make not operational handling consistent [S390] cio: make disconnected handling consistent [S390] Fix memory leak in /proc/cio_ignore [S390] cio: channel path memory leak [S390] module: fix memory leak in s390 module loader [S390] Enable kmemleak on s390. [S390] 3270 console build fix ...
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Bernd Schmidt authored
An interestingly corrupted romfs file system exposed a problem with the romfs_dev_strnlen function: it's passing the wrong value to its helpers. Rather than limit the string to the length passed in by the callers, it uses the size of the device as the limit. Signed-off-by:
Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (32 commits) USB: serial: no unnecessary GFP_ATOMIC in oti6858 USB: serial: fix race between unthrottle and completion handler in visor USB: serial: fix assumption that throttle/unthrottle cannot sleep USB: serial: fix race between unthrottle and completion handler in symbolserial USB: serial: fix race between unthrottle and completion handler in opticon USB: ehci: Fix isoc scheduling boundary checking. USB: storage: When a device returns no sense data, call it a Hardware Error USB: small fix in error case of suspend in generic usbserial code USB: visor: fix trivial accounting bug in visor driver USB: Fix throttling in generic usbserial driver USB: cp210x: Add support for the DW700 UART USB: ipaq: fix oops when device is plugged in USB: isp1362: fix build warnings on 64-bit systems USB: gadget: imx_udc: Use resource size USB: storage: iRiver P7 UNUSUAL_DEV patch USB: musb: make HAVE_CLK support optional USB: xhci: Fix dropping endpoints from the xHC schedule. USB: xhci: Don't wait for a disable slot cmd when HC dies. USB: xhci: Handle canceled URBs when HC dies. USB: xhci: Stop debugging polling loop when HC dies. ...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: Staging: comedi: fix build on arches that don't want comedi drivers Staging: comedi: pcmcia irq fixes Staging: comedi: ni_pcimio: Added device id for pxi-6225. Staging: comedi: ni_65xx.c: fix output inversion problem. Staging: comedi: ni_65xx.c: fix insn_bits shift calculation. Staging: comedi: s526: fixes for pulse generator Staging: comedi: s526: Take account of arch's byte order. Staging: comedi: s526: Get rid of global variable 'cmReg'. Staging: comedi: s526: Fix number of channels on DIO subdevice Staging: comedi: cb_pcidio: fix "section mismatch" error Staging: comedi: jr3_pci: Initialize transf variable fully in jr3_pci_poll_subdevice(). Staging: comedi: Corrected type of a printk argument in resize_async_buffer(). Staging: p9auth: a few fixes Staging: rtl8192e: Add #include <linux/vmalloc.h> Staging: iio: Don't build on s390 Staging: winbond: implement prepare_multicast and fix API usage Staging: w35und: Fix ->beacon_int breakage Staging: remove cowloop driver Staging: remove agnx driver Staging: comedi: serial2002: fix include build issue
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/stagingLinus Torvalds authored
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (s3c-hwmon) Disable build for S3C64xx MAINTAINERS: Fix Riku Voipio's address hwmon: (asus_atk0110) Enable the EC hwmon: (asus_atk0110) Refactor the code hwmon: (sht15) Fix spurious section mismatch warning
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: fix file clone ioctl for bookend extents Btrfs: fix uninit compiler warning in cow_file_range_nocow Btrfs: constify dentry_operations Btrfs: optimize back reference update during btrfs_drop_snapshot Btrfs: remove negative dentry when deleting subvolumne Btrfs: optimize fsync for the single writer case Btrfs: async delalloc flushing under space pressure Btrfs: release delalloc reservations on extent item insertion Btrfs: delay clearing EXTENT_DELALLOC for compressed extents Btrfs: cleanup extent_clear_unlock_delalloc flags Btrfs: fix possible softlockup in the allocator Btrfs: fix deadlock on async thread startup
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Alexey Dobriyan authored
After m68k's task_thread_info() doesn't refer to current, it's possible to remove sched.h from interrupt.h and not break m68k! Many thanks to Heiko Carstens for allowing this. Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (34 commits) [SCSI] qla2xxx: Fix NULL ptr deref bug in fail path during queue create [SCSI] st: fix possible memory use after free after MTSETBLK ioctl [SCSI] be2iscsi: Moving to pci_pools v3 [SCSI] libiscsi: iscsi_session_setup to allow for private space [SCSI] be2iscsi: add 10Gbps iSCSI - BladeEngine 2 driver [SCSI] zfcp: Fix hang when offlining device with offline chpid [SCSI] zfcp: Fix lockdep warning when offlining device with offline chpid [SCSI] zfcp: Fix oops during shutdown of offline device [SCSI] zfcp: Fix initial device and cfdc for delayed adapter allocation [SCSI] zfcp: correctly initialize unchained requests [SCSI] mpt2sas: Bump version 02.100.03.00 [SCSI] mpt2sas: Support dev remove when phy status is MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT [SCSI] mpt2sas: Timeout occurred within the HANDSHAKE logic while waiting on firmware to ACK. [SCSI] mpt2sas: Call init_completion on a per request basis. [SCSI] mpt2sas: Target Reset will be issued from Interrupt context. [SCSI] mpt2sas: Added SCSIIO, Internal and high priority memory pools to support multiple TM [SCSI] mpt2sas: Copyright change to 2009. [SCSI] mpt2sas: Added mpi2_history.txt for MPI2 headers. [SCSI] mpt2sas: Update driver to MPI2 REV K headers. [SCSI] bfa: Brocade BFA FC SCSI driver ...
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- Oct 10, 2009
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Oliver Neukum authored
GFP_ATOMIC without good cause is evil. Signed-off-by:
Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Oliver Neukum authored
usb:usbserial:visor: fix race between unthrottle and completion handler visor_unthrottle() mustn't resubmit the URB unconditionally as the URB may still be running. the same bug as opticon. Signed-off-by:
Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Oliver Neukum authored
many serial subdrivers are clearly written as if throttle/unthrottle cannot sleep. This leads to unneeded atomic submissions. This patch converts affected drivers in a way to makes very clear that throttle/unthrottle can sleep. Thus future misdesigns can be avoided and efficiency and reliability improved. This removes any such assumption using GFP_KERNEL and spin_lock_irq() Signed-off-by:
Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Oliver Neukum authored
usb:usbserial:symbolserial: fix race between unthrottle and completion handler symbol_unthrottle() mustn't resubmit the URB unconditionally as the URB may still be running. the same bug as opticon. Signed-off-by:
Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Oliver Neukum authored
usb:usbserial:opticon: fix race between unthrottle and completion handler opticon_unthrottle() mustn't resubmit the URB unconditionally as the URB may still be running. Signed-off-by:
Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Sarah Sharp authored
The EHCI driver does some bounds checking when it's scheduling an iTD for an active endpoint. It sets the local variable start to stream->next_uframe and moves that variable further in the schedule if necessary. However, the driver fails to do anything with start before jumping to the ready label and setting the URB's starting frame to stream->next_uframe. Alan Stern confirms the EHCI driver should set stream->next_uframe to start before jumping. Signed-off-by:
Sarah Sharp <sarah.a.sharp@linux.intel.com> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
This patch (as1294) fixes a problem that has plagued users for several kernel releases. Some USB mass-storage devices don't return any sense data when they encounter certain kinds of errors. The SCSI layer interprets this to mean that the operation should be retried, and the same thing happens -- over and over again with no limit. In some circumstances (such as when a bus reset occurs) that is the right thing to do, but not here. The patch checks for this condition (a transport failure with no sense data) and changes the result code to DID_ERROR and the sense code to Hardware Error. This does get only a limited number of retries, and so the command will fail relatively quickly instead of getting stuck in an infinite loop. This fixes a large part of Bugzilla #14118. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Tested-by:
Mantas Mikulenas <grawity@gmail.com> CC: stable <stable@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Oliver Neukum authored
usb:usbserial: fix flags in error case of suspension suspended flag must be reset in error case Signed-off-by:
Oliver Neukum <oliver@neukum.org> Cc: stable <stable@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Oliver Neukum authored
usb:usbserial:visor: fix accounting in error case data not pushed to the tty layer due to an error mustn't be counted Signed-off-by:
Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Joris van Rantwijk authored
The generic usbserial driver in Linux 2.6.31 halts its receiving channel in response to throttle requests from the line discipline. Unfortunately it drops the contents of the first URB received after throttling takes effect. This patch corrects that problem. Signed-off-by:
Joris van Rantwijk <jorispubl@xs4all.nl> Acked-by:
Johan Hovold <jhovold@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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