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2012-05-16KVM: PPC: Book3S HV: Fix bug leading to deadlock in guest HPT updatesPaul Mackerras
When handling the H_BULK_REMOVE hypercall, we were forgetting to invalidate and unlock the hashed page table entry (HPTE) in the case where the page had been paged out. This fixes it by clearing the first doubleword of the HPTE in that case. This fixes a regression introduced in commit a92bce95f0 ("KVM: PPC: Book3S HV: Keep HPTE locked when invalidating"). The effect of the regression is that the host kernel will sometimes hang when under memory pressure. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2012-05-16powerpc/kvm: Fix VSID usage in 64-bit "PR" KVMBenjamin Herrenschmidt
The code forgot to scramble the VSIDs the way we normally do and was basically using the "proto VSID" directly with the MMU. This means that in practice, KVM used random VSIDs that could collide with segments used by other user space programs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [agraf: simplify ppc32 case] Signed-off-by: Alexander Graf <agraf@suse.de>
2012-05-16KVM: PPC: Book3S: PR: Fix hsrr codeAlexander Graf
When jumping back into the kernel to code that knows that it would be using HSRR registers instead of SRR registers, we need to make sure we pass it all information on where to jump to in HSRR registers. Unfortunately, we used r10 to store the information to distinguish between the HSRR and SRR case. That register got clobbered in between though, rendering the later comparison invalid. Instead, let's use cr1 to store this information. That way we don't need yet another register and everyone's happy. This fixes PR KVM on POWER7 bare metal for me. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-05-16KVM: PPC: Fix PR KVM on POWER7 bare metalAlexander Graf
When running on a system that is HV capable, some interrupts use HSRR SPRs instead of the normal SRR SPRs. These are also used in the Linux handlers to jump back to code after an interrupt got processed. Unfortunately, in our "jump back to the real host handler after we've done the context switch" code, we were only setting the SRR SPRs, rendering Linux to jump back to some invalid IP after it's processed the interrupt. This fixes random crashes on p7 opal mode with PR KVM for me. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-05-16KVM: PPC: Book3S: PR: Handle EMUL_ASSISTAlexander Graf
In addition to normal "priviledged instruction" traps, we can also receive "emulation assist" traps on newer hardware that has the HV bit set. Handle that one the same way as a privileged instruction, including the instruction fetching. That way we don't execute old instructions that we happen to still leave in that field when an emul assist trap comes. This fixes -M mac99 / -M g3beige on p7 bare metal for me. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-05-16isdn: Fix typo in hfcmulti.cMasanari Iida
Correcting spelling "extenal" to "external" in hfcmulti.c Signed-off-by: Masanari Iida <standby24x7@gmail.com>
2012-05-16Merge branch 'for-davem' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless John Linville says: Here are three more fixes that some of my developers are desperate to see included in 3.4... Johan Hedberg went to some length justifyng the inclusion of these two Bluetooth fixes: "The device_connected fix should be quite self-explanatory, but it's actually a wider issue than just for keyboards. All profiles that do incoming connection authorization (e.g. headsets) will break without it with specific hardware. The reason it wasn't caught earlier is that it only occurs with specific Bluetooth adapters. As for the security level patch, this fixes L2CAP socket based security level elevation during a connection. The HID profile needs this (for keyboards) and it is the only way to achieve the security level elevation when using the management interface to talk to the kernel (hence the management enabling patch being the one that exposes this" The rtlwifi fix addresses a regression related to firmware loading, as described in kernel.org bug 43187. It basically just moves a hunk of code to a more appropriate place. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16Merge branch 'delete-tokenring' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
2012-05-16net: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debugJoe Perches
Use the current debugging style and enable dynamic_debug. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net: ipv6: Standardize prefixes for message loggingJoe Perches
Add #define pr_fmt(fmt) as appropriate. Add "IPv6: " to appropriate files. Convert printk(KERN_<LEVEL> to pr_<level> (but not KERN_DEBUG). Standardize on "%s: " not "%s(): " when emitting __func__. Use "%s: ", __func__ instead of embedding function name. Coalesce formats, align arguments. ADDRCONF output is now prefixed with "IPv6: " Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16netdev/phy: Make get_phy_id() static and quit EXPORTing it.David Daney
This function is only referenced from within phy_device.c, so there is no reason to export it. In fact, we can make it static. Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Fixed error flow in rem_slave_eqsJack Morgenstein
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Add XRC domains and counters to resource trackerJack Morgenstein
Add missing resource tracking for XRC domains and complete the tracking for HCA network flow counters. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Fix potential kernel Oops in res tracker during Dom0 driver ↵Jack Morgenstein
unload Currently the slave and master resources are deleted after master freed all bitmaps. If any resources were not properly cleaned up during the shutdown process, an Oops would result. Fix so that delete slave (only) resources during cleanup. Master resources are cleaned up during unload process, and need not separately be cleaned. Note that during cleanup, we need to split the resource-tracker freeing functionality. Before removing all the bitmaps, we free any leftover slave resources. However, we can only remove the resource tracker linked list after all bitmap frees, since some of the freeing functions (e.g., mlx4_cleanup_eq_table) use paravirtualized FW commands which expect the resource tracker linked list to be present. Found-by: Aviad Yehezkel <aviadye@mellanox.com> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Do not reset module-parameter num_vfs when fail to enable sriovJack Morgenstein
Consider the following scenario: 2 HCAs, where only one of which can run SRIOV. If we reset the module parameter, all the VFs of the SRIOV HCA will be claimed by the PPF host (-- the code relies on num_vfs being non-zero to avoid this claiming, and num_vfs was reset when pci_enable_sriov failed for the non-SRIOV HCA). The solution is not to touch the num_vfs parameter. Also, eliminate the unneeded check of num_vfs when disabling sriov (the dev flag bit is sufficient). Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Remove unused *_str functions from the resource trackerJack Morgenstein
Removed unsued *_str helper functions from resource_tracker.c Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Change SYNC_TPT to be native (not wrapped)Jack Morgenstein
The "wrapped" was incorrect, since no wrapper function was defined. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4_core: Fix init_port mask state for slavesJack Morgenstein
In function mlx4_INIT_PORT_wrapper, the port state mask for the slave is only set if we are invoking the INIT_PORT fw command. However, the reference count for the (initialized) port is incremented anyway. This creates a problem in that when we have multiple slaves, then the CLOSE_PORT command will never be invoked. The reason is that in the CLOSE_PORT wrapper, if the port-state mask is zero for the slave (which it is), the wrapper returns without doing anything. The only slave which will not return immediately in the CLOSE_PORT wrapper is that slave for which INIT_PORT was invoked. The fix is to not have the port-state mask setting depend on the logic for calling the INIT_PORT fw command. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16net/mlx4: Address build warnings on set but not used variablesOr Gerlitz
Handle the compiler warnings on variables which are set but not used by removing the relevant variable or casting a return value which is ignored on purpose to void. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15mn10300/CPU hotplug: Add missing call to notify_cpu_starting()Srivatsa S. Bhat
The scheduler depends on receiving the CPU_STARTING notification, without which we end up into a lot of trouble. So add the missing call to notify_cpu_starting() in the bringup code. Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-15parisc/CPU hotplug: Add missing call to notify_cpu_starting()Srivatsa S. Bhat
The scheduler depends on receiving the CPU_STARTING notification, without which we end up into a lot of trouble. So add the missing call to notify_cpu_starting() in the bringup code. Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-and-Tested-by: Mikulas Patocka <mpatocka@redhat.com> Acked-and-Tested-by: Tobias Ulmer <tobiasu@tmux.org> Tested-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-15tokenring: delete all remaining driver supportPaul Gortmaker
This represents the mass deletion of the of the tokenring support. It gets rid of: - the net/tr.c which the drivers depended on - the drivers/net component - the Kbuild infrastructure around it - any tokenring related CONFIG_ settings in any defconfigs - the tokenring headers in the include/linux dir - the firmware associated with the tokenring drivers. - any associated token ring documentation. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-05-15net: delete all instances of special processing for token ringPaul Gortmaker
We are going to delete the Token ring support. This removes any special processing in the core networking for token ring, (aside from net/tr.c itself), leaving the drivers and remaining tokenring support present but inert. The mass removal of the drivers and net/tr.c will be in a separate commit, so that the history of these files that we still care about won't have the giant deletion tied into their history. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-05-15atm: remove the coupling to token ring supportPaul Gortmaker
The token ring support is going away, so decouple the atm support from it in advance. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-05-15s390: delete any traces of token ring supportPaul Gortmaker
The token ring support is going away from the core kernel. Divorce the S390 drivers from it in advance. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-05-15Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2012-05-15Merge tag 'asoc-3.4' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Last minute fixes Some last minute fixes for ASoC. Small, focused changes to specific drivers.
2012-05-15xfrm: Convert several xfrm policy match functions to bool.David S. Miller
xfrm_selector_match xfrm_sec_ctx_match __xfrm4_selector_match __xfrm6_selector_match Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15net: Convert net_ratelimit uses to net_<level>_ratelimitedJoe Perches
Standardize the net core ratelimited logging functions. Coalesce formats, align arguments. Change a printk then vprintk sequence to use printf extension %pV. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15net: Add net_ratelimited_function and net_<level>_ratelimited macrosJoe Perches
__ratelimit() can be considered an inverted bool test because it returns true when not ratelimited. Several tests in the kernel tree use this __ratelimit() function incorrectly. No net_ratelimit uses are incorrect currently though. Most uses of net_ratelimit are to log something via printk or pr_<level>. In order to minimize the uses of net_ratelimit, and to start standardizing the code style used for __ratelimit() and net_ratelimit(), add a net_ratelimited_function() macro and net_<level>_ratelimited() logging macros similar to pr_<level>_ratelimited that use the global net_ratelimit instead of a static per call site "struct ratelimit_state". Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15dummy: documentation is staleAlan Cox
dummy0/1/2 names are always used and there are options to set multiple dummy devices. Remove the obsolete text Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42865 Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15pch_gbe: fix transmit racesEric Dumazet
Andy reported pch_gbe triggered "NETDEV WATCHDOG" errors. May 11 11:06:09 kontron kernel: WARNING: at net/sched/sch_generic.c:261 dev_watchdog+0x1ec/0x200() (Not tainted) May 11 11:06:09 kontron kernel: Hardware name: N/A May 11 11:06:09 kontron kernel: NETDEV WATCHDOG: eth0 (pch_gbe): transmit queue 0 timed out It seems pch_gbe has a racy tx path (races with TX completion path) Remove tx_queue_lock lock since it has no purpose, we must use tx_lock instead. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Andy Cress <andy.cress@us.kontron.com> Tested-by: Andy Cress <andy.cress@us.kontron.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15cdc_ether: add Novatel USB551L device IDs for FLAG_WWANDan Williams
Needs to be tagged with FLAG_WWAN, which since it has generic descriptors, won't happen if we don't override the generic driver info. Cc: Oliver Neukum <oliver@neukum.org> Cc: stable@vger.kernel.org Signed-off-by: Dan Williams <dcbw@redhat.com> Acked-by: Oliver Neukum <oliver@neukum.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15usbnet: fix skb traversing races during unlink(v2)Ming Lei
Commit 4231d47e6fe69f061f96c98c30eaf9fb4c14b96d(net/usbnet: avoid recursive locking in usbnet_stop()) fixes the recursive locking problem by releasing the skb queue lock before unlink, but may cause skb traversing races: - after URB is unlinked and the queue lock is released, the refered skb and skb->next may be moved to done queue, even be released - in skb_queue_walk_safe, the next skb is still obtained by next pointer of the last skb - so maybe trigger oops or other problems This patch extends the usage of entry->state to describe 'start_unlink' state, so always holding the queue(rx/tx) lock to change the state if the referd skb is in rx or tx queue because we need to know if the refered urb has been started unlinking in unlink_urbs. The other part of this patch is based on Huajun's patch: always traverse from head of the tx/rx queue to get skb which is to be unlinked but not been started unlinking. Signed-off-by: Huajun Li <huajun.li.lee@gmail.com> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Cc: Oliver Neukum <oneukum@suse.de> Cc: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15ASoC: wm8994: Fix AIF2ADC power downMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
2012-05-15xfrm_algo: drop an unnecessary inclusionJan Beulich
For several releases, this has not been needed anymore, as no helper functions declared in net/ah.h get implemented by xfrm_algo.c anymore. Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15xfrm: make xfrm_algo.c a moduleJan Beulich
By making this a standalone config option (auto-selected as needed), selecting CRYPTO from here rather than from XFRM (which is boolean) allows the core crypto code to become a module again even when XFRM=y. Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15qlcnic-ethtool: set the ethtool_dump flag by ETH_FW_DUMP_DISABLE value that ↵Manish chopra
is zero, if firmware dump is disabled. Signed-off-by: Manish chopra <manish.chopra@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15linux/ethtool: Added macro ETH_FW_DUMP_DISABLEManish chopra
o flag field of ethtool_dump structure must be initialized by this macro value that is zero, if the firmware dump is disabled. by this we can get the firmware dump capability [enable/disable] via ethtool Signed-off-by: Manish chopra <manish.chopra@qlogic.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15genirq: export handle_edge_irq() and irq_to_desc()Jiri Kosina
Export handle_edge_irq() and irq_to_desc() to modules to allow them to do things such as __irq_set_handler_locked(...., handle_edge_irq); This fixes ERROR: "handle_edge_irq" [drivers/gpio/gpio-pch.ko] undefined! ERROR: "irq_to_desc" [drivers/gpio/gpio-pch.ko] undefined! when gpio-pch is being built as a module. This was introduced by commit df9541a60af0 ("gpio: pch9: Use proper flow type handlers") that added __irq_set_handler_locked(d->irq, handle_edge_irq); but handle_edge_irq() was not exported for modules (and inlined __irq_set_handler_locked() requires irq_to_desc() exported as well) Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-15ALSA: hda/idt - Fix power-map for speaker-pins with some HP laptopsTakashi Iwai
BIOS on some HP laptops don't set the speaker-pins as fixed but expose as jacks, and this confuses the driver as if these pins are jack-detectable. As a result, the machine doesn't get sounds from speakers because the driver prepares the power-map update via jack unsol events which never come up in reality. The bug was introduced in some time in 3.2 for enabling the power-mapping feature. This patch fixes the problem by replacing the check of the persistent power-map bits with a proper is_jack_detectable() call. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43240 Cc: <stable@vger.kernel.org> [v3.2+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-05-14stmmac: fix suspend/resume lockingGiuseppe CAVALLARO
Upon resume from standby, there is a possible interrupt unsafe locking scenario raised when configure the Kernel with CONFIG_PROVE_LOCKING. So this patch fixes that in PM driver stuff by calling lock/unlock_irqsave/restore. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14stmmac: add mixed burst for DMAGiuseppe CAVALLARO
In mixed burst (MB) mode, the AHB master always initiates the bursts with fixed-size when the DMA requests transfers of size less than or equal to 16 beats. This patch adds the MB support and the flag that can be passed from the platform to select it. MB mode can also give some benefits in terms of performances on some platforms. v2: fixed Coding Style Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14stmmac: extend mac addr reg and fix perfect fileringGiuseppe CAVALLARO
This patch is to extend the number of MAC address registers for 16 to 32. In fact, other new 16 registers are available in new chips and this can help on perfect filter mode for unicast. This patch also fixes the perfect filtering mode by setting the bit 31 in the MAC address registers. v2: fixed Coding Style. Signed-off-by: Gianni Antoniazzi <gianni.antoniazzi-ext@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14dm9000: some coldfire boards need thisSteven King
Some coldfire boards (ie m5253demo) have a dm9000 onboard. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14codel: use u16 field instead of 31bits for rec_inv_sqrtEric Dumazet
David pointed out gcc might generate poor code with 31bit fields. Using u16 is more than enough and permits a better code output. Also make the code intent more readable using constants, fixed point arithmetic not being trivial for everybody. Suggested-by: David Miller <davem@davemloft.net> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included changes: * an improvement to avoid to linearise the whole received packet when not needed * an improvement for client traffic rerouting after roaming * a fix for the local translation table state-machine * minor cleanups and fixes
2012-05-14Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
2012-05-14net: codel: fix build errorsSasha Levin
Fix the following build error: net/sched/sch_fq_codel.c: In function 'fq_codel_dump_stats': net/sched/sch_fq_codel.c:464:3: error: unknown field 'qdisc_stats' specified in initializer net/sched/sch_fq_codel.c:464:3: warning: missing braces around initializer net/sched/sch_fq_codel.c:464:3: warning: (near initialization for 'st.<anonymous>') net/sched/sch_fq_codel.c:465:3: error: unknown field 'qdisc_stats' specified in initializer net/sched/sch_fq_codel.c:465:3: warning: excess elements in struct initializer net/sched/sch_fq_codel.c:465:3: warning: (near initialization for 'st') net/sched/sch_fq_codel.c:466:3: error: unknown field 'qdisc_stats' specified in initializer net/sched/sch_fq_codel.c:466:3: warning: excess elements in struct initializer net/sched/sch_fq_codel.c:466:3: warning: (near initialization for 'st') net/sched/sch_fq_codel.c:467:3: error: unknown field 'qdisc_stats' specified in initializer net/sched/sch_fq_codel.c:467:3: warning: excess elements in struct initializer net/sched/sch_fq_codel.c:467:3: warning: (near initialization for 'st') make[1]: *** [net/sched/sch_fq_codel.o] Error 1 Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14net/codel: Add missing #include <linux/prefetch.h>Geert Uytterhoeven
m68k allmodconfig: net/sched/sch_codel.c: In function ‘dequeue’: net/sched/sch_codel.c:70: error: implicit declaration of function ‘prefetch’ make[1]: *** [net/sched/sch_codel.o] Error 1 Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>