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2017-01-05net: phy: convert micrel to new read_mmd/write_mmd driver methodsRussell King
Convert micrel to the new read_mmd/write_mmd driver methods. This Clause 22 PHY does not support any MMD access method. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-01-05net: phy: switch all users to phy_(read|write)_mmd()Russell King
Switch everyone over to using phy_read_mmd() and phy_write_mmd() now that it is able to handle both Clause 22 indirect addressing and Clause 45 direct addressing. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-01-05net: phy: make phy_(read|write)_mmd() generic MMD accessorsRussell King
Make phy_(read|write)_mmd() generic 802.3 clause 45 register accessors for both Clause 22 and Clause 45 PHYs, using either the direct register reading for Clause 45, or the indirect method for Clause 22 PHYs. Allow this behaviour to be overriden by PHY drivers where necessary. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-01-05net: phy: move phy MMD accessors to phy-core.cRussell King
Move the phy_(read|write)__mmd() helpers out of line, they will become our main MMD accessor functions, and so will be a little more complex. This complexity doesn't belong in an inline function. Also move the _indirect variants as well to keep like functionality together. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-01-05net: phy: don't double-read clause 45 status registerRussell King
One of the design decisions behind the link status bit in the status register is that it latches low on link loss. This is so that link loss events are not missed. Double-reading the status register means that we always read the current state of the link, clearing any link loss event. This can cause problems - for example, if the link has negotiated a different set of operating parameters, these will not be communicated to the MAC as the PHY state machine will still think that the link has remained active. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-01-05net: phy: add 802.3 clause 45 support to phylibRussell King
Add generic helpers for 802.3 clause 45 PHYs for >= 10Gbps support. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2016-12-09net: mlx5: Fix Kconfig help textChristopher Covington
Since the following commit, Infiniband and Ethernet have not been mutually exclusive. Fixes: 4aa17b28 mlx5: Enable mutual support for IB and Ethernet Signed-off-by: Christopher Covington <cov@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-09net: smsc911x: back out silently on probe deferralsLinus Walleij
When trying to get a regulator we may get deferred and we see this noise: smsc911x 1b800000.ethernet-ebi2 (unnamed net_device) (uninitialized): couldn't get regulators -517 Then the driver continues anyway. Which means that the regulator may not be properly retrieved and reference counted, and may be switched off in case noone else is using it. Fix this by returning silently on deferred probe and let the system work it out. Cc: Jeremy Linton <jeremy.linton@arm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-09ibmveth: set correct gso_size and gso_typeThomas Falcon
This patch is based on an earlier one submitted by Jon Maxwell with the following commit message: "We recently encountered a bug where a few customers using ibmveth on the same LPAR hit an issue where a TCP session hung when large receive was enabled. Closer analysis revealed that the session was stuck because the one side was advertising a zero window repeatedly. We narrowed this down to the fact the ibmveth driver did not set gso_size which is translated by TCP into the MSS later up the stack. The MSS is used to calculate the TCP window size and as that was abnormally large, it was calculating a zero window, even although the sockets receive buffer was completely empty." We rely on the Virtual I/O Server partition in a pseries environment to provide the MSS through the TCP header checksum field. The stipulation is that users should not disable checksum offloading if rx packet aggregation is enabled through VIOS. Some firmware offerings provide the MSS in the RX buffer. This is signalled by a bit in the RX queue descriptor. Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Reviewed-by: Jonathan Maxwell <jmaxwell37@gmail.com> Reviewed-by: David Dai <zdai@us.ibm.com> Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08net: ethernet: cpmac: Call SET_NETDEV_DEV()Florian Fainelli
The TI CPMAC driver calls into PHYLIB which now checks for net_device->dev.parent, so make sure we do set it before calling into any MDIO/PHYLIB related function. Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a different owner") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08net: ethernet: lantiq_etop: Call SET_NETDEV_DEV()Florian Fainelli
The Lantiq Etop driver calls into PHYLIB which now checks for net_device->dev.parent, so make sure we do set it before calling into any MDIO/PHYLIB related function. Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a different owner") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08Merge tag 'linux-can-fixes-for-4.9-20161208' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2016-12-08 this is a pull request for one patch. Jiho Chu found and fixed a use-after-free error in the cleanup path in the peak pcan USB CAN driver. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08cxgb4/cxgb4vf: Assign netdev->dev_port with port IDArjun V
Added missing dev_port assignment in cxgb4vf driver. Also made dev_port assignment of cxgb4 in sync with cxgb4vf driver. Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: Arjun V <arjun@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08driver: ipvlan: Unlink the upper dev when ipvlan_link_new failedGao Feng
When netdev_upper_dev_unlink failed in ipvlan_link_new, need to unlink the ipvlan dev with upper dev. Signed-off-by: Gao Feng <fgao@ikuai8.com> Acked-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08NET: usb: cdc_mbim: add quirk for supporting Telit LE922ADaniele Palmas
Telit LE922A MBIM based composition does not work properly with altsetting toggle done in cdc_ncm_bind_common. This patch adds CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE quirk to avoid this procedure that, instead, is mandatory for other modems. Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Reviewed-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08can: peak: fix bad memory access and free sequence추지호
Fix for bad memory access while disconnecting. netdev is freed before private data free, and dev is accessed after freeing netdev. This makes a slub problem, and it raise kernel oops with slub debugger config. Signed-off-by: Jiho Chu <jiho.chu@samsung.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2016-12-07phy: Don't increment MDIO bus refcount unless it's a different ownerFlorian Fainelli
Commit 3e3aaf649416 ("phy: fix mdiobus module safety") fixed the way we dealt with MDIO bus module reference count, but sort of introduced a regression in that, if an Ethernet driver registers its own MDIO bus driver, as is common, we will end up with the Ethernet driver's module->refnct set to 1, thus preventing this driver from any removal. Fix this by comparing the network device's device driver owner against the MDIO bus driver owner, and only if they are different, increment the MDIO bus module refcount. Fixes: 3e3aaf649416 ("phy: fix mdiobus module safety") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-07netvsc: reduce maximum GSO sizestephen hemminger
Hyper-V (and Azure) support using NVGRE which requires some extra space for encapsulation headers. Because of this the largest allowed TSO packet is reduced. For older releases, hard code a fixed reduced value. For next release, there is a better solution which uses result of host offload negotiation. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-07drivers: net: cpsw-phy-sel: Clear RGMII_IDMODE on "rgmii" linksAlex
Support for setting the RGMII_IDMODE bit was added in the commit referenced below. However, that commit did not add the symmetrical clearing of the bit by way of setting it in "mask". Add it here. Note that the documentation marks clearing this bit as "reserved", however, according to TI, support for delaying the clock does exist in the MAC, although it is not officially supported. We tested this on a board with an RGMII to RGMII link that will not work unless this bit is cleared. Fixes: 0fb26c3063ea ("drivers: net: cpsw-phy-sel: add support to configure rgmii internal delay") Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net/mlx5e: Change the SQ/RQ operational state to positive logicMohamad Haj Yahia
When using the negative logic (i.e. FLUSH state), after the RQ/SQ reopen we will have a time interval that the RQ/SQ is not really ready and the state indicates that its not in FLUSH state because the initial SQ/RQ struct memory starts as zeros. Now we changed the state to indicate if the SQ/RQ is opened and we will set the READY state after finishing preparing all the SQ/RQ resources. Fixes: 6e8dd6d6f4bd ("net/mlx5e: Don't wait for SQ completions on close") Fixes: f2fde18c52a7 ("net/mlx5e: Don't wait for RQ completions on close") Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net/mlx5e: Don't flush SQ on errorSaeed Mahameed
We are doing SQ descriptors cleanup in driver. Fixes: 6e8dd6d6f4bd ("net/mlx5e: Don't wait for SQ completions on close") Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net/mlx5e: Don't notify HW when filling the edge of ICO SQSaeed Mahameed
We are going to do this a couple of steps ahead anyway. Fixes: d3c9bc2743dc ("net/mlx5e: Added ICO SQs") Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net/mlx5: Fix query ISSI flowKamal Heib
In old FWs query ISSI command is not supported and for some of those FWs it might fail with status other than "MLX5_CMD_STAT_BAD_OP_ERR". In such case instead of failing the driver load, we will treat any FW status other than 0 for Query ISSI FW command as ISSI not supported and assume ISSI=0 (most basic driver/FW interface). In case of driver syndrom (query ISSI failure by driver) we will fail driver load. Fixes: f62b8bb8f2d3 ('net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality') Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net/mlx5: Remove duplicate pci dev name printKamal Heib
Remove duplicate pci dev name printing from mlx5_core_warn/dbg. Fixes: 5a7883989b1c ('net/mlx5_core: Improve mlx5 messages') Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net/mlx5: Verify module parametersKamal Heib
Verify the mlx5_core module parameters by making sure that they are in the expected range and if they aren't restore them to their default values. Fixes: 9603b61de1ee ('mlx5: Move pci device handling from mlx5_ib to mlx5_core') Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net: fec: fix compile with CONFIG_M5272Nikita Yushchenko
Commit 80cca775cdc4 ("net: fec: cache statistics while device is down") introduced unconditional statistics-related actions. However, when driver is compiled with CONFIG_M5272, staticsics-related definitions do not exist, which results into build errors. Fix that by adding explicit handling of !defined(CONFIG_M5272) case. Fixes: 80cca775cdc4 ("net: fec: cache statistics while device is down") Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06be2net: Add DEVSEC privilege to SET_HSW_CONFIG command.Venkat Duvvuru
OPCODE_COMMON_GET_FN_PRIVILEGES is returning only DEVSEC privilege (Unrestricted Administrative Privilege) for Lancer NIC functions. So, driver is failing SET_HSW_CONFIG command, as DEVSEC privilege was not set in the privilege bitmap. This patch fixes the problem by setting DEVSEC privilege in SET_HSW_CONFIG’s privilege bitmap. Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com> Signed-off-by: Suresh Reddy <suresh.reddy@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06virtio-net: Fix DMA-from-the-stack in virtnet_set_mac_address()Andy Lutomirski
With CONFIG_VMAP_STACK=y, virtnet_set_mac_address() can be passed a pointer to the stack and it will OOPS. Copy the address to the heap to prevent the crash. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Laura Abbott <labbott@redhat.com> Reported-by: zbyszek@in.waw.pl Signed-off-by: Andy Lutomirski <luto@kernel.org> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06net: stmmac: clear reset value of snps, wr_osr_lmt/snps, rd_osr_lmt before ↵Niklas Cassel
writing WR_OSR_LMT and RD_OSR_LMT have a reset value of 1. Since the reset value wasn't cleared before writing, the value in the register would be incorrect if specifying an uneven value for snps,wr_osr_lmt/snps,rd_osr_lmt. Zero is a valid value for the properties, since the databook specifies: maximum outstanding requests = WR_OSR_LMT + 1. We do not want to change the behavior for existing users when the property is missing. Therefore, default to 1 if the property is missing, since that is the same as the reset value. Signed-off-by: Niklas Cassel <niklas.cassel@axis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05net: ep93xx_eth: Do not crash unloading moduleFlorian Fainelli
When we unload the ep93xx_eth, whether we have opened the network interface or not, we will either hit a kernel paging request error, or a simple NULL pointer de-reference because: - if ep93xx_open has been called, we have created a valid DMA mapping for ep->descs, when we call ep93xx_stop, we also call ep93xx_free_buffers, ep->descs now has a stale value - if ep93xx_open has not been called, we have a NULL pointer for ep->descs, so performing any operation against that address just won't work Fix this by adding a NULL pointer check for ep->descs which means that ep93xx_free_buffers() was able to successfully tear down the descriptors and free the DMA cookie as well. Fixes: 1d22e05df818 ("[PATCH] Cirrus Logic ep93xx ethernet driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05bnx2x: Prevent tunnel config for 577xxMintz, Yuval
Only the 578xx adapters are capable of configuring UDP ports for the purpose of tunnelling - doing the same on 577xx might lead to a firmware assertion. We're already not claiming support for any related feature for such devices, but we also need to prevent the configuration of the UDP ports to the device in this case. Fixes: f34fa14cc033 ("bnx2x: Add vxlan RSS support") Reported-by: Anikina Anna <anikina@gmail.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05bnx2x: Correct ringparam estimate when DOWNMintz, Yuval
Until interface is up [and assuming ringparams weren't explicitly configured] when queried for the size of its rings bnx2x would claim they're the maximal size by default. That is incorrect as by default the maximal number of buffers would be equally divided between the various rx rings. This prevents the user from actually setting the number of elements on each rx ring to be of maximal size prior to transitioning the interface into up state. To fix this, make a rough estimation about the number of buffers. It wouldn't always be accurate, but it would be much better than current estimation and would allow users to increase number of buffers during early initialization of the interface. Reported-by: Seymour, Shane <shane.seymour@hpe.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05net: bnx2x: fix improper return valuePan Bian
Macro BNX2X_ALLOC_AND_SET(arr, lbl, func) calls kmalloc() to allocate memory, and jumps to label "lbl" if the allocation fails. Label "lbl" first cleans memory and then returns variable rc. Before calling the macro, the value of variable rc is 0. Because 0 means no error, the callers of bnx2x_init_firmware() may be misled. This patch fixes the bug, assigning "-ENOMEM" to rc before calling macro NX2X_ALLOC_AND_SET(). Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=189141 Signed-off-by: Pan Bian <bianpan2016@163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05net: ethernet: qlogic: set error code on failurePan Bian
When calling dma_mapping_error(), the value of return variable rc is 0. And when the call returns an unexpected value, rc is not set to a negative errno. Thus, it will return 0 on the error path, and its callers cannot detect the bug. This patch fixes the bug, assigning "-ENOMEM" to err. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=189041 Signed-off-by: Pan Bian <bianpan2016@163.com> Acked-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05net: irda: set error code on failuresPan Bian
When the calls to kzalloc() fail, the value of return variable ret may be 0. 0 means success in this context. This patch fixes the bug, assigning "-ENOMEM" to ret before calling kzalloc(). Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188971 Signed-off-by: Pan Bian <bianpan2016@163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05net: usb: set error code when usb_alloc_urb failsPan Bian
In function lan78xx_probe(), variable ret takes the errno code on failures. However, when the call to usb_alloc_urb() fails, its value will keeps 0. 0 indicates success in the context, which is inconsistent with the execution result. This patch fixes the bug, assigning "-ENOMEM" to ret when usb_alloc_urb() returns a NULL pointer. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188771 Signed-off-by: Pan Bian <bianpan2016@163.com> Acked-by: Woojung Huh <woojung.huh@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05netdev: broadcom: propagate error codePan Bian
Function bnxt_hwrm_stat_ctx_alloc() always returns 0, even if the call to _hwrm_send_message() fails. It may be better to propagate the errors to the caller of bnxt_hwrm_stat_ctx_alloc(). Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188661 Signed-off-by: Pan Bian <bianpan2016@163.com> Acked-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02geneve: avoid use-after-free of skb->dataSabrina Dubroca
geneve{,6}_build_skb can end up doing a pskb_expand_head(), which makes the ip_hdr(skb) reference we stashed earlier stale. Since it's only needed as an argument to ip_tunnel_ecn_encap(), move this directly in the function call. Fixes: 08399efc6319 ("geneve: ensure ECN info is handled properly in all tx/rx paths") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02Merge tag 'linux-can-fixes-for-4.9-20161201' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2016-12-02 this is a pull request for net/master. There are two patches by Stephane Grosjean, who adds support for the new PCAN-USB X6 USB interface to the pcan_usb driver. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: renesas: ravb: unintialized return valueDan Carpenter
We want to set the other "err" variable here so that we can return it later. My version of GCC misses this issue but I caught it with a static checker. Fixes: 9f70eb339f52 ("net: ethernet: renesas: ravb: fix fixed-link phydev leaks") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02sh_eth: remove unchecked interrupts for RZ/A1Chris Brandt
When streaming a lot of data and the RZ/A1 can't keep up, some status bits will get set that are not being checked or cleared which cause the following messages and the Ethernet driver to stop working. This patch fixes that issue. irq 21: nobody cared (try booting with the "irqpoll" option) handlers: [<c036b71c>] sh_eth_interrupt Disabling IRQ #21 Fixes: db893473d313a4ad ("sh_eth: Add support for r7s72100") Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: bcmgenet: Utilize correct struct device for all DMA operationsFlorian Fainelli
__bcmgenet_tx_reclaim() and bcmgenet_free_rx_buffers() are not using the same struct device during unmap that was used for the map operation, which makes DMA-API debugging warn about it. Fix this by always using &priv->pdev->dev throughout the driver, using an identical device reference for all map/unmap calls. Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02NET: usb: qmi_wwan: add support for Telit LE922A PID 0x1040Daniele Palmas
This patch adds support for PID 0x1040 of Telit LE922A. The qmi adapter requires to have DTR set for proper working, so QMI_WWAN_QUIRK_DTR has been enabled. Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02cdc_ether: Fix handling connection notificationKristian Evensen
Commit bfe9b9d2df66 ("cdc_ether: Improve ZTE MF823/831/910 handling") introduced a work-around in usbnet_cdc_status() for devices that exported cdc carrier on twice on connect. Before the commit, this behavior caused the link state to be incorrect. It was assumed that all CDC Ethernet devices would either export this behavior, or send one off and then one on notification (which seems to be the default behavior). Unfortunately, it turns out multiple devices sends a connection notification multiple times per second (via an interrupt), even when connection state does not change. This has been observed with several different USB LAN dongles (at least), for example 13b1:0041 (Linksys). After bfe9b9d2df66, the link state has been set as down and then up for each notification. This has caused a flood of Netlink NEWLINK messages and syslog to be flooded with messages similar to: cdc_ether 2-1:2.0 eth1: kevent 12 may have been dropped This commit fixes the behavior by reverting usbnet_cdc_status() to how it was before bfe9b9d2df66. The work-around has been moved to a separate status-function which is only called when a known, affect device is detected. v1->v2: * Do not open-code netif_carrier_ok() (thanks Henning Schild). * Call netif_carrier_off() instead of usb_link_change(). This prevents calling schedule_work() twice without giving the work queue a chance to be processed (thanks Bjørn Mork). Fixes: bfe9b9d2df66 ("cdc_ether: Improve ZTE MF823/831/910 handling") Reported-by: Henning Schild <henning.schild@siemens.com> Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: altera: TSE: do not use tx queue lock in tx completion handlerLino Sanfilippo
The driver already uses its private lock for synchronization between xmit and xmit completion handler making the additional use of the xmit_lock unnecessary. Furthermore the driver does not set NETIF_F_LLTX resulting in xmit to be called with the xmit_lock held and then taking the private lock while xmit completion handler does the reverse, first take the private lock, then the xmit_lock. Fix these issues by not taking the xmit_lock in the tx completion handler. Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: altera: TSE: Remove unneeded dma sync for tx buffersLino Sanfilippo
An explicit dma sync for device directly after mapping as well as an explicit dma sync for cpu directly before unmapping is unnecessary and costly on the hotpath. So remove these calls. Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: fix of-node and fixed-link-phydev leaksJohan Hovold
Make sure to deregister and free any fixed-link phy registered during probe on probe errors and on driver unbind by adding a new glue helper function. Drop the of-node reference taken in the same path also on late probe errors (and not just on driver unbind) by moving the put from stmmac_dvr_remove() to the new helper. Fixes: 277323814e49 ("stmmac: add fixed-link device-tree support") Fixes: 4613b279bee7 ("ethernet: stmicro: stmmac: add missing of_node_put after calling of_parse_phandle") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: platform: fix outdated function headerJohan Hovold
Fix the OF-helper function header to reflect that the function no longer has a platform-data parameter. Fixes: b0003ead75f3 ("stmmac: make stmmac_probe_config_dt return the platform data struct") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-meson8b: fix probe error pathJohan Hovold
Make sure to disable clocks before returning on late probe errors. Fixes: 566e82516253 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-generic: fix probe error pathJohan Hovold
Make sure to call any exit() callback to undo the effect of init() before returning on late probe errors. Fixes: cf3f047b9af4 ("stmmac: move hw init in the probe (v2)") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>