- 30 Mar, 2015 20 commits
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Jisheng Zhang authored
commit 62cf983a upstream. Commit 0dcaa249 ("sdhci-pxav3: Fix runtime PM initialization") tries to fix one hang issue caused by calling sdhci_add_host() on a suspended device. The fix enables the clock twice, once by clk_prepare_enable() and another by pm_runtime_get_sync(), meaning that the clock will never be gated at runtime PM suspend. I observed the power consumption regression on Marvell BG2Q SoCs. In fact, the fix is not correct. There still be a very small window during which a runtime suspend might somehow occur after pm_runtime_enable() but before pm_runtime_get_sync(). This patch fixes all of the two problems by just incrementing the usage counter before pm_runtime_enable(). It also adjust the order of disabling runtime pm and storing the usage count in the error path to handle clock gating properly. Signed-off-by:
Jisheng Zhang <jszhang@marvell.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> [ kamal: backport to 3.13-stable: context ] Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
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Christophe Ricard authored
commit c4eadfaf upstream. Add a return value check when reading data from the FIFO register. Reviewed-by:
Jason Gunthorpe <jason.gunthorpe@obsidianresearch.com> Signed-off-by:
Christophe Ricard <christophe-h.ricard@st.com> Reviewed-by:
Peter Huewe <peterhuewe@gmx.de> Signed-off-by:
Luis Henriques <luis.henriques@canonical.com> Signed-off-by:
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Christophe Ricard authored
commit 1ba3b0b6 upstream. When sending data in tpm_stm_i2c_send, each loop iteration send buf. Send buf + i instead as the goal of this for loop is to send a number of byte from buf that fit in burstcnt. Once those byte are sent, we are supposed to send the next ones. The driver was working because the burstcount value returns always the maximum size for a TPM command or response. (0x800 for a command and 0x400 for a response). Reviewed-by:
Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by:
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Hon Ching (Vicky) Lo authored
commit 84eb186b upstream. There was an oops in tpm_ibmvtpm_get_desired_dma, which caused kernel panic during boot when vTPM is enabled in Power partition configured in AMS mode. vio_bus_probe calls vio_cmo_bus_probe which calls tpm_ibmvtpm_get_desired_dma to get the size needed for DMA allocation. The problem is, vio_cmo_bus_probe is called before calling probe, which for vtpm is tpm_ibmvtpm_probe and it's this function that initializes and sets up vtpm's CRQ and gets required data values. Therefore, since this has not yet been done, NULL is returned in attempt to get the size for DMA allocation. We added a NULL check. In addition, a default buffer size will be set when NULL is returned. Signed-off-by:
Hon Ching (Vicky) Lo <honclo@linux.vnet.ibm.com> Signed-off-by:
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Scot Doyle authored
commit 448e9c55 upstream. Some machines, such as the Acer C720 and Toshiba CB35, have TPMs that do not send IRQs while also having an ACPI TPM entry indicating that they will be sent. These machines freeze on resume while the tpm_tis module waits for an IRQ, eventually timing out. When in interrupt mode, the tpm_tis module should receive an IRQ during module init. Fall back to polling mode if none is received when expected. Signed-off-by:
Scot Doyle <lkml14@scotdoyle.com> Tested-by:
Michael Mullin <masmullin@gmail.com> Reviewed-by:
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Kiran Padwal authored
commit bb95cd34 upstream. Currently these driver are missing a check on the return value of devm_kzalloc, which would cause a NULL pointer dereference in a OOM situation. This patch adds a missing check for tpm_i2c_atmel.c and tpm_i2c_nuvoton.c Signed-off-by:
Kiran Padwal <kiran.padwal@smartplayin.com> Reviewed-By:
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David Howells authored
commit 398a1e71 upstream. Add newly registered TPMs to the tail of the list, not the beginning, so that things that are specifying TPM_ANY_NUM don't find that the device they're using has inadvertently changed. Adding a second device would break IMA, for instance. Signed-off-by:
David Howells <dhowells@redhat.com> Reviewed-by:
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Calvin Owens authored
commit 28423ad2 upstream. While debugging an issue with excessive softirq usage, I encountered the following note in commit 3e339b5d ("softirq: Use hotplug thread infrastructure"): [ paulmck: Call rcu_note_context_switch() with interrupts enabled. ] ...but despite this note, the patch still calls RCU with IRQs disabled. This seemingly innocuous change caused a significant regression in softirq CPU usage on the sending side of a large TCP transfer (~1 GB/s): when introducing 0.01% packet loss, the softirq usage would jump to around 25%, spiking as high as 50%. Before the change, the usage would never exceed 5%. Moving the call to rcu_note_context_switch() after the cond_sched() call, as it was originally before the hotplug patch, completely eliminated this problem. Signed-off-by:
Calvin Owens <calvinowens@fb.com> Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
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Matthew Wilcox authored
commit 91117a20 upstream. The 'pfn' returned by axonram was completely bogus, and has been since 2008. Signed-off-by:
Matthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by:
Jan Kara <jack@suse.cz> Reviewed-by:
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by:
Jens Axboe <axboe@fb.com> Signed-off-by:
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Cyrille Pitchen authored
commit 6fbb9bdf upstream. -EDEFER error wasn't handle properly by atmel_serial_probe(). As an example, when atmel_serial_probe() is called for the first time, we pass the test_and_set_bit() test to check whether the port has already been initalized. Then we call atmel_init_port(), which may return -EDEFER, possibly returned before by clk_get(). Consequently atmel_serial_probe() used to return this error code WITHOUT clearing the port bit in the "atmel_ports_in_use" mask. When atmel_serial_probe() was called for the second time, it used to fail on the test_and_set_bit() function then returning -EBUSY. When atmel_serial_probe() fails, this patch make it clear the port bit in the "atmel_ports_in_use" mask, if needed, before returning the error code. Signed-off-by:
Cyrille Pitchen <cyrille.pitchen@atmel.com> Acked-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Cyrille Pitchen authored
commit d4f64187 upstream. atmel_serial_probe() calls atmel_init_port(). In turn, atmel_init_port() calls clk_disable_unprepare() to disable the peripheral clock before returning. Later atmel_serial_probe() accesses some I/O registers such as the Mode and Control registers for RS485 support then the Name and Version registers, through a call to atmel_get_ip_name(), but at that moment the peripheral clock was still disabled. Signed-off-by:
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Sebastian Andrzej Siewior authored
commit 5efd2ea8 upstream. the following error pops up during "testusb -a -t 10" | musb-hdrc musb-hdrc.1.auto: dma_pool_free buffer-128, f134e000/be842000 (bad dma) hcd_buffer_create() creates a few buffers, the smallest has 32 bytes of size. ARCH_KMALLOC_MINALIGN is set to 64 bytes. This combo results in hcd_buffer_alloc() returning memory which is 32 bytes aligned and it might by identified by buffer_offset() as another buffer. This means the buffer which is on a 32 byte boundary will not get freed, instead it tries to free another buffer with the error message. This patch fixes the issue by creating the smallest DMA buffer with the size of ARCH_KMALLOC_MINALIGN (or 32 in case ARCH_KMALLOC_MINALIGN is smaller). This might be 32, 64 or even 128 bytes. The next three pools will have the size 128, 512 and 2048. In case the smallest pool is 128 bytes then we have only three pools instead of four (and zero the first entry in the array). The last pool size is always 2048 bytes which is the assumed PAGE_SIZE / 2 of 4096. I doubt it makes sense to continue using PAGE_SIZE / 2 where we would end up with 8KiB buffer in case we have 16KiB pages. Instead I think it makes sense to have a common size(s) and extend them if there is need to. There is a BUILD_BUG_ON() now in case someone has a minalign of more than 128 bytes. Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Ricardo Ribalda Delgado authored
commit 145b3fe5 upstream. Some implementations of modprobe fail to load the driver for a PCI device automatically because the "interface" part of the modalias from the kernel is lowercase, and the modalias from file2alias is uppercase. The "interface" is the low-order byte of the Class Code, defined in PCI r3.0, Appendix D. Most interface types defined in the spec do not use alpha characters, so they won't be affected. For example, 00h, 01h, 10h, 20h, etc. are unaffected. Print the "interface" byte of the Class Code in uppercase hex, as we already do for the Vendor ID, Device ID, Class, etc. Commit 89ec3dcf ("PCI: Generate uppercase hex for modalias interface class") fixed only half of the problem. Some udev implementations rely on the uevent file and not the modalias file. Fixes: d1ded203 ("PCI: add MODALIAS to hotplug event for pci devices") Fixes: 89ec3dcf ("PCI: Generate uppercase hex for modalias interface class") Signed-off-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Acked-by:
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Sumit.Saxena@avagotech.com authored
commit c2ced171 upstream. Update driver "mask_interrupts" before enable/disable hardware interrupt in order to avoid missing interrupts because of "mask_interrupts" still set to 1 and hardware interrupts are enabled. Signed-off-by:
Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by:
Chaitra Basappa <chaitra.basappa@avagotech.com> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Jiri Kosina authored
commit 8e7b3410 upstream. The ignore check that got added in 6ce901eb ("HID: input: fix confusion on conflicting mappings") needs to properly check for VARIABLE reports as well (ARRAY reports should be ignored), otherwise legitimate keyboards might break. Fixes: 6ce901eb ("HID: input: fix confusion on conflicting mappings") Reported-by:
Fredrik Hallenberg <megahallon@gmail.com> Reported-by:
David Herrmann <dh.herrmann@gmail.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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David Herrmann authored
commit 6ce901eb upstream. On an PC-101/103/104 keyboard (American layout) the 'Enter' key and its neighbours look like this: +---+ +---+ +-------+ | 1 | | 2 | | 5 | +---+ +---+ +-------+ +---+ +-----------+ | 3 | | 4 | +---+ +-----------+ On a PC-102/105 keyboard (European layout) it looks like this: +---+ +---+ +-------+ | 1 | | 2 | | | +---+ +---+ +-+ 4 | +---+ +---+ | | | 3 | | 5 | | | +---+ +---+ +-----+ (Note that the number of keys is the same, but key '5' is moved down and the shape of key '4' is changed. Keys '1' to '3' are exactly the same.) The keys 1-4 report the same scan-code in HID in both layouts, even though the keysym they produce is usually different depending on the XKB-keymap used by user-space. However, key '5' (US 'backslash'/'pipe') reports 0x31 for the upper layout and 0x32 for the lower layout, as defined by the HID spec. This is highly confusing as the linux-input API uses a single keycode for both. So far, this was never a problem as there never has been a keyboard with both of those keys present at the same time. It would have to look something like this: +---+ +---+ +-------+ | 1 | | 2 | | x31 | +---+ +---+ +-------+ +---+ +---+ +-----+ | 3 | |x32| | 4 | +---+ +---+ +-----+ HID can represent such a keyboard, but the linux-input API cannot. Furthermore, any user-space mapping would be confused by this and, luckily, no-one ever produced such hardware. Now, the HID input layer fixed this mess by mapping both 0x31 and 0x32 to the same keycode (KEY_BACKSLASH==0x2b). As only one of both physical keys is present on a hardware, this works just fine. Lets introduce hardware-vendors into this: ------------------------------------------ Unfortunately, it seems way to expensive to produce a different device for American and European layouts. Therefore, hardware-vendors put both keys, (0x31 and 0x32) on the same keyboard, but only one of them is hooked up to the physical button, the other one is 'dead'. This means, they can use the same hardware, with a different button-layout and automatically produce the correct HID events for American *and* European layouts. This is unproblematic for normal keyboards, as the 'dead' key will never report any KEY-DOWN events. But RollOver keyboards send the whole matrix on each key-event, allowing n-key roll-over mode. This means, we get a 0x31 and 0x32 event on each key-press. One of them will always be 0, the other reports the real state. As we map both to the same keycode, we will get spurious key-events, even though the real key-state never changed. The easiest way would be to blacklist 'dead' keys and never handle those. We could simply read the 'country' tag of USB devices and blacklist either key according to the layout. But... hardware vendors... want the same device for all countries and thus many of them set 'country' to 0 for all devices. Meh.. So we have to deal with this properly. As we cannot know which of the keys is 'dead', we either need a heuristic and track those keys, or we simply make use of our value-tracking for HID fields. We simply ignore HID events for absolute data if the data didn't change. As HID tracks events on the HID level, we haven't done the keycode translation, yet. Therefore, the 'dead' key is tracked independently of the real key, therefore, any events on it will be ignored. This patch simply discards any HID events for absolute data if it didn't change compared to the last report. We need to ignore relative and buffered-byte reports for obvious reasons. But those cannot be affected by this bug, so we're fine. Preferably, we'd do this filtering on the HID-core level. But this might break a lot of custom drivers, if they do not follow the HID specs. Therefore, we do this late in hid-input just before we inject it into the input layer (which does the exact same filtering, but on the keycode level). If this turns out to break some devices, we might have to limit filtering to EV_KEY events. But lets try to do the Right Thing first, and properly filter any absolute data that didn't change. This patch is tagged for 'stable' as it fixes a lot of n-key RollOver hardware. We might wanna wait with backporting for a while, before we know it doesn't break anything else, though. Reported-by:
Adam Goode <adam@spicenitz.org> Reported-by:
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Martin Vajnar authored
commit a52d2093 upstream. Since the removal of CONFIG_REGULATOR_DUMMY option, the touchscreen stopped working. This patch enables the "replacement" for REGULATOR_DUMMY and allows the touchscreen to work even though there is no regulator for "vcc". Signed-off-by:
Martin Vajnar <martin.vajnar@gmail.com> Signed-off-by:
Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit baad2dc4 upstream. Add regulator_has_full_constraints() call to spitz board file to let regulator core know that we do not have any additional regulators left. This lets it substitute unprovided regulators with dummy ones. This fixes the following warnings that can be seen on spitz if regulators are enabled: ads7846 spi2.0: unable to get regulator: -517 spi spi2.0: Driver ads7846 requests probe deferral Signed-off-by:
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit 9bc78f32 upstream. Add regulator_has_full_constraints() call to poodle board file to let regulator core know that we do not have any additional regulators left. This lets it substitute unprovided regulators with dummy ones. This fixes the following warnings that can be seen on poodle if regulators are enabled: ads7846 spi1.0: unable to get regulator: -517 spi spi1.0: Driver ads7846 requests probe deferral wm8731 0-001b: Failed to get supply 'AVDD': -517 wm8731 0-001b: Failed to request supplies: -517 wm8731 0-001b: ASoC: failed to probe component -517 Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit 271e8017 upstream. Add regulator_has_full_constraints() call to corgi board file to let regulator core know that we do not have any additional regulators left. This lets it substitute unprovided regulators with dummy ones. This fixes the following warnings that can be seen on corgi if regulators are enabled: ads7846 spi1.0: unable to get regulator: -517 spi spi1.0: Driver ads7846 requests probe deferral wm8731 0-001b: Failed to get supply 'AVDD': -517 wm8731 0-001b: Failed to request supplies: -517 wm8731 0-001b: ASoC: failed to probe component -517 corgi-audio corgi-audio: ASoC: failed to instantiate card -517 Signed-off-by:
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- 26 Mar, 2015 12 commits
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Saran Maruti Ramanara authored
[ Upstream commit cfbf654e ] When making use of RFC5061, section 4.2.4. for setting the primary IP address, we're passing a wrong parameter header to param_type2af(), resulting always in NULL being returned. At this point, param.p points to a sctp_addip_param struct, containing a sctp_paramhdr (type = 0xc004, length = var), and crr_id as a correlation id. Followed by that, as also presented in RFC5061 section 4.2.4., comes the actual sctp_addr_param, which also contains a sctp_paramhdr, but this time with the correct type SCTP_PARAM_IPV{4,6}_ADDRESS that param_type2af() can make use of. Since we already hold a pointer to addr_param from previous line, just reuse it for param_type2af(). Fixes: d6de3097 ("[SCTP]: Add the handling of "Set Primary IP Address" parameter to INIT") Signed-off-by:
Saran Maruti Ramanara <saran.neti@telus.com> Signed-off-by:
Daniel Borkmann <dborkman@redhat.com> Acked-by:
Vlad Yasevich <vyasevich@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Florian Westphal authored
[ Upstream commit e2a4800e ] When we've run out of space in the output buffer to store more data, we will call zlib_deflate with a NULL output buffer until we've consumed remaining input. When this happens, olen contains the size the output buffer would have consumed iff we'd have had enough room. This can later cause skb_over_panic when ppp_generic skb_put()s the returned length. Reported-by:
Iain Douglas <centos@1n6.org.uk> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit bdbbb852 ] In commit be9f4a44 ("ipv4: tcp: remove per net tcp_sock") I tried to address contention on a socket lock, but the solution I chose was horrible : commit 3a7c384f ("ipv4: tcp: unicast_sock should not land outside of TCP stack") addressed a selinux regression. commit 0980e56e ("ipv4: tcp: set unicast_sock uc_ttl to -1") took care of another regression. commit b5ec8eea ("ipv4: fix ip_send_skb()") fixed another regression. commit 811230cd ("tcp: ipv4: initialize unicast_sock sk_pacing_rate") was another shot in the dark. Really, just use a proper socket per cpu, and remove the skb_orphan() call, to re-enable flow control. This solves a serious problem with FQ packet scheduler when used in hostile environments, as we do not want to allocate a flow structure for every RST packet sent in response to a spoofed packet. Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Roopa Prabhu authored
[ Upstream commit 59ccaaaa ] Reported in: https://bugzilla.kernel.org/show_bug.cgi?id=92081 This patch avoids calling rtnl_notify if the device ndo_bridge_getlink handler does not return any bytes in the skb. Alternately, the skb->len check can be moved inside rtnl_notify. For the bridge vlan case described in 92081, there is also a fix needed in bridge driver to generate a proper notification. Will fix that in subsequent patch. v2: rebase patch on net tree Signed-off-by:
Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by:
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Christoph Hellwig authored
[ Upstream commit 06539d30 ] Signed-off-by:
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Govindarajulu Varadarajan authored
[ Upstream commit 24e579c8 ] With the commit d75b1ade ("net: less interrupt masking in NAPI") napi repoll is done only when work_done == budget. When in busy_poll is we return 0 in napi_poll. We should return budget. Signed-off-by:
Govindarajulu Varadarajan <_govind@gmx.com> Acked-by:
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subashab@codeaurora.org authored
[ Upstream commit fc752f1f ] An exception is seen in ICMP ping receive path where the skb destructor sock_rfree() tries to access a freed socket. This happens because ping_rcv() releases socket reference with sock_put() and this internally frees up the socket. Later icmp_rcv() will try to free the skb and as part of this, skb destructor is called and which leads to a kernel panic as the socket is freed already in ping_rcv(). -->|exception -007|sk_mem_uncharge -007|sock_rfree -008|skb_release_head_state -009|skb_release_all -009|__kfree_skb -010|kfree_skb -011|icmp_rcv -012|ip_local_deliver_finish Fix this incorrect free by cloning this skb and processing this cloned skb instead. This patch was suggested by Eric Dumazet Signed-off-by:
Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by:
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Herbert Xu authored
[ Upstream commit 86f3cddb ] While working on rhashtable walking I noticed that the UDP diag dumping code is buggy. In particular, the socket skipping within a chain never happens, even though we record the number of sockets that should be skipped. As this code was supposedly copied from TCP, this patch does what TCP does and resets num before we walk a chain. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Acked-by:
Pavel Emelyanov <xemul@parallels.com> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit 6088beef ] NAPI poll logic now enforces that a poller returns exactly the budget when it wants to be called again. If a driver limits TX completion, it has to return budget as well when the limit is hit, not the number of received packets. Reported-and-tested-by:
Mike Galbraith <umgwanakikbuti@gmail.com> Signed-off-by:
Manish Chopra <manish.chopra@qlogic.com> Signed-off-by:
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Hagen Paul Pfeifer authored
[ Upstream commit 9d289715 ] Reduce the attack vector and stop generating IPv6 Fragment Header for paths with an MTU smaller than the minimum required IPv6 MTU size (1280 byte) - called atomic fragments. See IETF I-D "Deprecating the Generation of IPv6 Atomic Fragments" [1] for more information and how this "feature" can be misused. [1] https://tools.ietf.org/html/draft-ietf-6man-deprecate-atomfrag-generation-00Signed-off-by:
Fernando Gont <fgont@si6networks.com> Signed-off-by:
Hagen Paul Pfeifer <hagen@jauu.net> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit ac64da0b ] softnet_data.input_pkt_queue is protected by a spinlock that we must hold when transferring packets from victim queue to an active one. This is because other cpus could still be trying to enqueue packets into victim queue. A second problem is that when we transfert the NAPI poll_list from victim to current cpu, we absolutely need to special case the percpu backlog, because we do not want to add complex locking to protect process_queue : Only owner cpu is allowed to manipulate it, unless cpu is offline. Based on initial patch from Prasad Sodagudi & Subash Abhinov Kasiviswanathan. This version is better because we do not slow down packet processing, only make migration safer. Reported-by:
Prasad Sodagudi <psodagud@codeaurora.org> Reported-by:
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Willem de Bruijn authored
[ Upstream commit f812116b ] The sockaddr is returned in IP(V6)_RECVERR as part of errhdr. That structure is defined and allocated on the stack as struct { struct sock_extended_err ee; struct sockaddr_in(6) offender; } errhdr; The second part is only initialized for certain SO_EE_ORIGIN values. Always initialize it completely. An MTU exceeded error on a SOCK_RAW/IPPROTO_RAW is one example that would return uninitialized bytes. Signed-off-by:
Willem de Bruijn <willemb@google.com> ---- Also verified that there is no padding between errhdr.ee and errhdr.offender that could leak additional kernel data. Acked-by:
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- 25 Mar, 2015 1 commit
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Jan Kara authored
commit b10a0819 upstream. Currently maximum space limit quota format supports is in blocks however since we store space limits in bytes, this is somewhat confusing. So store the maximum limit in bytes as well. Also rename the field to match the new unit and related inode field to match the new naming scheme. Reviewed-by:
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- 24 Mar, 2015 1 commit
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Kamal Mostafa authored
Signed-off-by:
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- 20 Mar, 2015 6 commits
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Andy Shevchenko authored
commit 9d239d35 upstream. The commit d297933c (spi: dw: Fix detecting FIFO depth) tries to fix the logic of the FIFO detection based on the description on the comments. However, there is a slight difference between numbers in TX Level and TX FIFO size. So, by specification the FIFO size would be in a range 2-256 bytes. From TX Level prospective it means we can set threshold in the range 0-(FIFO size - 1) bytes. Hence there are currently two issues: a) FIFO size 2 bytes is actually skipped since TX Level is 1 bit and could be either 0 or 1 byte; b) FIFO size is incorrectly decreased by 1 which already done by meaning of TX Level register. This patch fixes it eventually right. Fixes: d297933c (spi: dw: Fix detecting FIFO depth) Reviewed-by:
Axel Lin <axel.lin@ingics.com> Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Sabrina Dubroca authored
commit d1e158e2 upstream. info is in network byte order, change it back to host byte order before use. In particular, the current code sets the MTU of the tunnel to a wrong (too big) value. Fixes: c12b395a ("gre: Support GRE over IPv6") Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Acked-by:
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Marcelo Leitner authored
commit 61132bf7 upstream. Currently qlge_update_hw_vlan_features() will always first put the interface down, then update features and then bring it up again. But it is possible to hit this code while the adapter is down and this causes a non-paired call to napi_disable(), which will get stuck. This patch fixes it by skipping these down/up actions if the interface is already down. Fixes: a45adbe8 ("qlge: Enhance nested VLAN (Q-in-Q) handling.") Cc: Harish Patil <harish.patil@qlogic.com> Signed-off-by:
Marcelo Ricardo Leitner <mleitner@redhat.com> Signed-off-by:
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Nicolas Dichtel authored
commit 8997c27e upstream. src_net points to the netns where the netlink message has been received. This netns may be different from the netns where the interface is created (because the user may add IFLA_NET_NS_[PID|FD]). In this case, src_net is the link netns. It seems wrong to override the netns in the newlink() handler because if it was not already src_net, it means that the user explicitly asks to create the netdevice in another netns. CC: Sjur Brændeland <sjur.brandeland@stericsson.com> CC: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> Fixes: 8391c4aa ("caif: Bugfixes in CAIF netdevice for close and flow control") Fixes: c4125400 ("caif-hsi: Add rtnl support") Signed-off-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by:
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Eric Dumazet authored
commit 811230cd upstream. When I added sk_pacing_rate field, I forgot to initialize its value in the per cpu unicast_sock used in ip_send_unicast_reply() This means that for sch_fq users, RST packets, or ACK packets sent on behalf of TIME_WAIT sockets might be sent to slowly or even dropped once we reach the per flow limit. Signed-off-by:
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Ryusuke Konishi authored
commit 7ef3ff2f upstream. Nilfs2 eventually hangs in a stress test with fsstress program. This issue was caused by the following deadlock over I_SYNC flag between nilfs_segctor_thread() and writeback_sb_inodes(): nilfs_segctor_thread() nilfs_segctor_thread_construct() nilfs_segctor_unlock() nilfs_dispose_list() iput() iput_final() evict() inode_wait_for_writeback() * wait for I_SYNC flag writeback_sb_inodes() * set I_SYNC flag on inode->i_state __writeback_single_inode() do_writepages() nilfs_writepages() nilfs_construct_dsync_segment() nilfs_segctor_sync() * wait for completion of segment constructor inode_sync_complete() * clear I_SYNC flag after __writeback_single_inode() completed writeback_sb_inodes() calls do_writepages() for dirty inodes after setting I_SYNC flag on inode->i_state. do_writepages() in turn calls nilfs_writepages(), which can run segment constructor and wait for its completion. On the other hand, segment constructor calls iput(), which can call evict() and wait for the I_SYNC flag on inode_wait_for_writeback(). Since segment constructor doesn't know when I_SYNC will be set, it cannot know whether iput() will block or not unless inode->i_nlink has a non-zero count. We can prevent evict() from being called in iput() by implementing sop->drop_inode(), but it's not preferable to leave inodes with i_nlink == 0 for long periods because it even defers file truncation and inode deallocation. So, this instead resolves the deadlock by calling iput() asynchronously with a workqueue for inodes with i_nlink == 0. Signed-off-by:
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Al Viro <viro@zeniv.linux.org.uk> Tested-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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