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2006-08-02Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (24 commits) Revert "[PATCH] USB: move usb_device_class class devices to be real devices" Revert "[PATCH] USB: convert usb class devices to real devices" USB: UHCI: Don't test the Short Packet Detect bit USB: unusual_devs entry for Nokia 3250 USB: dummy-hcd: disable interrupts during req->complete USB: fix the USB_GADGET_DUMMY_HCD dependencies USB: ati_remote.c: autorepeat fix USB: doc: fixes devio.c location in proc_usb_info.txt. USB: doc: usb-help.txt update. USB: Patch for rtl8150 to fix unplug problems USB: cypress driver comment updates USB: unusual_devs device removal usb-storage: Add US_FL_IGNORE_DEVICE flag; ignore ZyXEL G220F USB: New USB ID for Belkin Serial Adapter USB: Additional PID for the ftdi_sio driver USB: adding support for SHARP WS003SH to ipaq.c USB: Fix Freescale high-speed USB host dependency USB: Removed 3-port device handler from Option driver USB: Drop Sierra Wireless MC8755 from the Option driver USB: Let option driver handle Anydata CDMA modems. Remove anydata driver. ...
2006-08-02Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3743/1: ARM: OMAP: Fix compile for OMAP [ARM] 3739/1: genirq updates: irq_chip, add and use irq_chip.name
2006-08-02[PATCH] x86_64: Fix CONFIG_IOMMU_DEBUGMuli Ben-Yehuda
If CONFIG_IOMMU_DEBUG is set force_iommu defaults to 1. In the case where no HW IOMMU is present in the machine and we end up using nommu, leaving force_iommu set to 1 causes dma_alloc_coherent to do the wrong thing. Therefore, if we end up using nommu, make sure force_iommu is 0. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-02[PATCH] x86_64: Fix backtracing for interrupt stacksAndi Kleen
Re-add backlink for old style unwinder to stack switching. Add proper stack frame and CFI annotations to call_softirq This prevents a oops when backtracing with fallback through the interrupt stack top. Suggested by Jan Beulich and Herbert Xu wanted it in 2.6.18. Cc: jbeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-02Fix force_sig_info() semantics after cleanupsLinus Torvalds
Suresh points out that commit b0423a0d9cc836b2c3d796623cd19236bfedfe63 broke the semantics of a synchronous signal like SIGSEGV occurring recursively inside its own handler handler (or, indeed, any other context when the signal was blocked). That was unintentional, and this fixes things up by reinstating the old semantics, but without reverting the cleanups. Cc: Paul E. McKenney <paulmck@us.ibm.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-2.6.18Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-2.6.18: gitignore: gitignore quilt's files kbuild: always use $(CC) for $(call cc-version) kconfig: correct oldconfig for unset choice options kbuild: -fno-stack-protector is not good kbuild: fix typo in modpost kbuild: improve error from file2alias kbuild: .gitignore utsrelease.h kbuild: version.h and new headers_* targets does not require a kernel config kbuild: hardcode value of YACC&LEX for aic7-triple-x
2006-08-02Revert "[PATCH] USB: move usb_device_class class devices to be real devices"Greg Kroah-Hartman
This reverts c182274ffe1277f4e7c564719a696a37cacf74ea commit because it required a newer version of udev to work properly than what is currently documented in Documentation/Changes. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02Revert "[PATCH] USB: convert usb class devices to real devices"Greg Kroah-Hartman
This reverts bd00949647ddcea47ce4ea8bb2cfcfc98ebf9f2a commit because it required a newer version of udev to work properly than what is currently documented in Documentation/Changes. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: UHCI: Don't test the Short Packet Detect bitAlan Stern
Apparently some UHCI controllers change the value of the Short Packet Detect (SPD) bit in the TD status word -- presumably when they receive a short packet. This patch (as759) changes uhci-hcd to avoid assuming that the bit is unchanged; in fact, the driver no longer looks at SPD at all. This fixes the second problem reported in Bugzilla #6752. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: unusual_devs entry for Nokia 3250Alan Stern
Here is another unusual_devs entry (as760) for another Nokia device, this time the 3250. From: Mario Rettig <mariorettig@web.de> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: dummy-hcd: disable interrupts during req->completeAlan Stern
This patch (as756) fixes a bug in dummy-hcd found by the lockdep checker. In one of the code paths, the driver did not disable interrupts before calling a request completion routine. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: fix the USB_GADGET_DUMMY_HCD dependenciesAdrian Bunk
If USB=m, USB_GADGET=y, the option USB_GADGET_DUMMY_HCD mustn't be offered since selecting it results in a compile error. This patch fixes kernel Bugzilla #6534 reported by Toralf Förster. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: ati_remote.c: autorepeat fixMarko Macek
When HZ is set to 250 (new default) or 100, the time span during which repeated events from the device are ignored could be too small due to ms->jiffies rounding. This causes the auto repeat to kick in early making it impossible for the user to generate individual press/release events. Increate the timeout to compensate. Signed-off-by: Marko Macek <Marko.Macek@gmx.net> Cc: Dmitry Torokhov <dtor_core@ameritech.net> Cc: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: doc: fixes devio.c location in proc_usb_info.txt.Luiz Fernando N. Capitulino
Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: doc: usb-help.txt update.Luiz Fernando N. Capitulino
http://www.suse.cz/development/linux-usb/ doesn't exist anymore. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Patch for rtl8150 to fix unplug problemsPeter Chubb
The RTL8150 driver currently crashes the kernel if the USB lead is unplugged while the device is active. The attached patch adds error handling to tell the network layer that the device has gone away when the device is unplugged. With this patch, the device can be plugged and unplugged to one's hearts' content, without crashing anything. Oh, I've also added rudimentary suspend and resume methods. Signed-off-by: Peter Chubb <peter@gelato.unsw.edu.au> Acked-by: Petko Manolov <petkan@nucleusys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: cypress driver comment updatesOliver Bock
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: unusual_devs device removalPhil Dibowitz
This entry has been a mystery for some time. I had sent this patch as an RFC a while ago, and now we've had two reports of this not being needed, so I'm removing it. In the event there are reports of breakage, we should revert this patch, but add a US_FL_NEED_OVERRIDE flag. Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02usb-storage: Add US_FL_IGNORE_DEVICE flag; ignore ZyXEL G220FDaniel Drake
This patch adds a new unusual_devs flag for when usb-storage needs to ignore a device that it would otherwise claim. We need to ignore the ZyXEL G220F as it is a virtual CDROM drive which includes the windows driver for this USB-WLAN adapter. After the windows driver is installed on a windows system, it converts it into a WLAN adapter (by ejecting the virtual disc). The virtual CDROM is of no interest to Linux users. The zd1211rw driver will automatically perform the eject operation, we just need to ensure that usb-storage does not claim the device. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: New USB ID for Belkin Serial AdapterKim Oldfield
Can you add the USB IDs for the Belkin USB Serial adapter (P/N F5U257) to the pl2303 driver in the Linux Kernel? Are you the appropriate person to approach for this? I recently purchased a Belkin USB Serial adapter (P/N F5U257) and found that it didn't work. After a bit of experimentation I found that it works with the pl2303 driver once the ID has been added. See attached patch to fix this. Also attached is the output from lsusb -v just in case you require any information from there. From: Kim Oldfield <luv@oldfield.wattle.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Additional PID for the ftdi_sio driverDave Platt
Here's a short patch which adds one PID to the set of devices supported by the ftdi_sio driver. The device in question is a DLP module used as part of a ham radio USB-to-packet adapter. From: Dave Platt <dplatt@radagast.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: adding support for SHARP WS003SH to ipaq.cNorihiko Tomiyama
This small patch enables a support of "SHARP WS003SH". "SHARP WS003SH" (usullary called "W-ZERO3") is most polular All-in-one handheld CellPhone-plus-WindowsMobile5.0 in Japan. "SHARP WS003SH" has two modes, "Modem" and "ActiveSync". But, "ActiveSync" mode uses NDIS connection. Therefore, ipaq.c can only support "Modem" mode. http://www.sharp.co.jp/ws/ (Japanese Site) http://greggman.com/edit/editheadlines/2005-12-24.htm From: Norihiko Tomiyama <norihiko.tomiyama@ctc-g.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Fix Freescale high-speed USB host dependencyLi Yang
The high-speed USB SOC only exists on MPC834x family not MPC83xx family. Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Removed 3-port device handler from Option driverMatthias Urlichs
Dead code. From: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Drop Sierra Wireless MC8755 from the Option driverMatthias Urlichs
This device is now supported by sierra.c. From: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Let option driver handle Anydata CDMA modems. Remove anydata driver.Matthias Urlichs
Signed-off-by: Jon K Hellan <hellan@acm.org> Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Option driver: Short driver names were identicalMatthias Urlichs
The short driver names were not unique, which prevented the driver from actually loading. Also, one of the ioctl pointers was missing. Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: Option driver: removed change history and linux/version.h includeMatthias Urlichs
Signed-off-by: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: AT91 OHCI updates, mostly power managementDavid Brownell
OHCI updates for AT91 series processors: - Get ready for at91sam926x processors (ARMv5tej not ARMv4t) - Suspend/resume support now behaves properly - In "standby" mode, OHCI can be a source of system wakeup events (remote wakeup, device connect/disconnect, etc) And minor cleanups. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: AT91 UDC updates, mostly power managementDavid Brownell
UDC updates for AT91 series processors: - Get ready for at91sam926x processors (ARMv5tej not ARMv4t) - Suspend/resume support now behaves properly - In "standby" mode, UDC can be a source of system wakeup events (host resume, device connect/disconnect, etc) - Fix IRQ storming issues, seemingly related to clock disabling changes that went in a while back And minor cleanups, especially whitespace. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02[IA64] Don't alloc empty frame in ia64_switch_mode_physZou Nan hai
I think ia64_switch_mode_phys and ia64_switch_mode_virt does not need to alloc an empty frame. An empty frame is required by loadrs but flushrs does not need that. Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-02[IA64] Do not assume output registers be reservered.Zou Nan hai
We found an issue in pal.S. According to the software runtime SPEC, The caller's output registers do not need to be preserved for caller. The callee may reuse input registers for any other purpose within the procedure. in ia64_pal_call_phys_stacked, input registers are copied to output registers before call into ia64_switch_mode_phys, then used to call into PAL. This assumes output registers are preserved in ia64_switch_mode_phys, which may not be true. In this particular case, ia64_switch_mode_phys alloc a null frame , and mask off psr.i. If an interrupt comes at this small window, or an MCA comes inside the procedure, output registers maybe changed, then the pal call may got some staled input registers. This patch moves the copies from input to output after ia64_switch_mode_phys to follow the software runtime convention. It also removed some unused labels in ia64_pal_call_phys_stacked. Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-02[IA64] add platform check to snsc driver initGreg Edwards
Add a platform check to the snsc driver init function, to prevent loading on non-sn2 systems. Signed-off-by: Greg Edwards <edwardsg@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-02[IA64] sparse cleanupsKeith Owens
Fix some sparse warnings on ia64. Large constants that should be long instead of int. Use NULL instead of 0. Add some missing __iomem casts. Replace a non-C99 structure assignment. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-02[NET]: Fix more per-cpu typosAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[SECURITY]: Fix build with CONFIG_SECURITY disabled.David S. Miller
include/linux/security.h: In function ‘security_release_secctx’: include/linux/security.h:2757: warning: ‘return’ with a value, in function returning void Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[I/OAT]: Remove CPU hotplug lock from net_dma_rebalanceChris Leech
Remove the lock_cpu_hotplug()/unlock_cpu_hotplug() calls from net_dma_rebalance The lock_cpu_hotplug()/unlock_cpu_hotplug() sequence in net_dma_rebalance is both incorrect (as pointed out by David Miller) because lock_cpu_hotplug() may sleep while the net_dma_event_lock spinlock is held, and unnecessary (as pointed out by Andrew Morton) as spin_lock() disables preemption which protects from CPU hotplug events. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[DECNET]: Fix for routing bugPatrick Caulfield
This patch fixes a bug in the DECnet routing code where we were selecting a loopback device in preference to an outward facing device even when the destination was known non-local. This patch should fix the problem. Signed-off-by: Patrick Caulfield <patrick@tykepenguin.com> Signed-off-by: Steven Whitehouse <steve@chygwyn.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[AF_UNIX]: Kernel memory leak fix for af_unix datagram getpeersec patchCatherine Zhang
From: Catherine Zhang <cxzhang@watson.ibm.com> This patch implements a cleaner fix for the memory leak problem of the original unix datagram getpeersec patch. Instead of creating a security context each time a unix datagram is sent, we only create the security context when the receiver requests it. This new design requires modification of the current unix_getsecpeer_dgram LSM hook and addition of two new hooks, namely, secid_to_secctx and release_secctx. The former retrieves the security context and the latter releases it. A hook is required for releasing the security context because it is up to the security module to decide how that's done. In the case of Selinux, it's a simple kfree operation. Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[NET]: skb_queue_lock_key() is no longer used.Adrian Bunk
Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[NET]: Remove lockdep_set_class() call from skb_queue_head_init().Arjan van de Ven
The skb_queue_head_init() function is used both in drivers for private use and in the core networking code. The usage models are vastly set of functions that is only softirq safe; while the driver usage tends to be more limited to a few hardirq safe accessor functions. Rather than annotating all 133+ driver usages, for now just split this lock into a per queue class. This change is obviously safe and probably should make 2.6.18. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[IPV6]: SNMPv2 "ipv6IfStatsOutFragCreates" counter errorWei Dong
When I tested linux kernel 2.6.71.7 about statistics "ipv6IfStatsOutFragCreates", and found that it couldn't increase correctly. The criteria is RFC 2465: ipv6IfStatsOutFragCreates OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of output datagram fragments that have been generated as a result of fragmentation at this output interface." ::= { ipv6IfStatsEntry 15 } I think there are two issues in Linux kernel. 1st: RFC2465 specifies the counter is "The number of output datagram fragments...". I think increasing this counter after output a fragment successfully is better. And it should not be increased even though a fragment is created but failed to output. 2nd: If we send a big ICMP/ICMPv6 echo request to a host, and receive ICMP/ICMPv6 echo reply consisted of some fragments. As we know that in Linux kernel first fragmentation occurs in ICMP layer(maybe saying transport layer is better), but this is not the "real" fragmentation,just do some "pre-fragment" -- allocate space for date, and form a frag_list, etc. The "real" fragmentation happens in IP layer -- set offset and MF flag and so on. So I think in "fast path" for ip_fragment/ip6_fragment, if we send a fragment which "pre-fragment" by upper layer we should also increase "ipv6IfStatsOutFragCreates". Signed-off-by: Wei Dong <weid@nanjing-fnst.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[IPV6]: SNMPv2 "ipv6IfStatsInHdrErrors" counter errorWei Dong
When I tested Linux kernel 2.6.17.7 about statistics "ipv6IfStatsInHdrErrors", found that this counter couldn't increase correctly. The criteria is RFC2465: ipv6IfStatsInHdrErrors OBJECT-TYPE SYNTAX Counter3 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of input datagrams discarded due to errors in their IPv6 headers, including version number mismatch, other format errors, hop count exceeded, errors discovered in processing their IPv6 options, etc." ::= { ipv6IfStatsEntry 2 } When I send TTL=0 and TTL=1 a packet to a router which need to be forwarded, router just sends an ICMPv6 message to tell the sender that TIME_EXCEED and HOPLIMITS, but no increments for this counter(in the function ip6_forward). Signed-off-by: Wei Dong <weid@nanjing-fnst.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[NET]: Kill the WARN_ON() calls for checksum fixups.David S. Miller
We have a more complete solution in the works, involving the seperation of CHECKSUM_HW on input vs. output, and having netfilter properly do incremental checksums. But that is a very involved patch and is thus 2.6.19 material. What we have now is infinitely better than the past, wherein all TSO packets were dropped due to corrupt checksums as soon at the NAT module was loaded. At least now, the checksums do get fixed up, it just isn't the cleanest nor most optimal solution. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[NETFILTER]: xt_hashlimit/xt_string: missing string validationPatrick McHardy
The hashlimit table name and the textsearch algorithm need to be terminated, the textsearch pattern length must not exceed the maximum size. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[NETFILTER]: SIP helper: expect RTP streams in both directionsPatrick McHardy
Since we don't know in which direction the first packet will arrive, we need to create one expectation for each direction, which is currently prevented by max_expected beeing set to 1. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[E1000]: Convert to netdev_alloc_skbDavid S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[TG3]: Convert to netdev_alloc_skbDavid S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[NET]: Add netdev_alloc_skb().Christoph Hellwig
Add a dev_alloc_skb variant that takes a struct net_device * paramater. For now that paramater is unused, but I'll use it to allocate the skb from node-local memory in a follow-up patch. Also there have been some other plans mentioned on the list that can use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02[TCP]: Process linger2 timeout consistently.David S. Miller
Based upon guidance from Alexey Kuznetsov. When linger2 is active, we check to see if the fin_wait2 timeout is longer than the timewait. If it is, we schedule the keepalive timer for the difference between the timewait timeout and the fin_wait2 timeout. When this orphan socket is seen by tcp_keepalive_timer() it will try to transform this fin_wait2 socket into a fin_wait2 mini-socket, again if linger2 is active. Not all paths were setting this initial keepalive timer correctly. The tcp input path was doing it correctly, but tcp_close() wasn't, potentially making the socket linger longer than it really needs to. Signed-off-by: David S. Miller <davem@davemloft.net>