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* platform driver: fix incorrect use of 'platform_bus_type' with 'struct ↵Ming Lei2009-03-2420-236/+358
| | | | | | | | | | | | | | | | | | | | | | device_driver' This patch fixes the bug reported in http://bugzilla.kernel.org/show_bug.cgi?id=11681. "Lots of device drivers register a 'struct device_driver' with the '.bus' member set to '&platform_bus_type'. This is wrong, since the platform_bus functions expect the 'struct device_driver' to be wrapped up in a 'struct platform_driver' which provides some additional callbacks (like suspend_late, resume_early). The effect may be that platform_suspend_late() uses bogus data outside the device_driver struct as a pointer pointer to the device driver's suspend_late() function or other hard to reproduce failures."(Lothar Wassmann) Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UIO: Take offset into account when determining number of pages that can be ↵Ian Abbott2009-03-241-1/+2
| | | | | | | | | | | | | | | mapped If a UIO memory region does not start on a page boundary but straddles one, the number of actual pages that overlap the memory region may be calculated incorrectly because the offset isn't taken into account. If userspace sets the mmap length to offset+size, it may fail with -EINVAL if UIO thinks it's trying to allocate too many pages. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Cc: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* uio: add the uio_aec driverBrandon Philips2009-03-243-0/+194
| | | | | | | | | | | | | | | | | | | | UIO driver for the Adrienne Electronics Corporation PCI time code device. This device differs from other UIO devices since it uses I/O ports instead of memory mapped I/O. In order to make it possible for UIO to work with this device a utility, uioport, can be used to read and write the ports. uioport is designed to be a setuid program and checks the permissions of the /dev/uio* node and if the user has write permissions it will use iopl and out*/in* to access the device. [1] git clone git://ifup.org/philips/uioport.git Signed-off-by: Brandon Philips <brandon@ifup.org> Signed-off-by: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UIO: Add name attributes for mappings and port regionsHans J. Koch2009-03-241-0/+22
| | | | | | | | | | | | | | | | | | | If a UIO device has several memory mappings, it can be difficult for userspace to find the right one. The situation becomes even worse if the UIO driver can handle different versions of a card that have different numbers of mappings. Benedikt Spranger has such cards and pointed this out to me. Thanks, Bene! To address this problem, this patch adds "name" sysfs attributes for each mapping. Userspace can use these to clearly identify each mapping. The name string is optional. If a driver doesn't set it, an empty string will be returned, so this patch won't break existing drivers. The same problem exists for port region information, so a "name" attribute is added there, too. Signed-off-by: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* platform: introduce module id table for platform devicesEric Miao2009-03-241-1/+22
| | | | | | | | | | | | | | | | | | | | | | | | | Now platform_device is being widely used on SoC processors where the peripherals are attached to the system bus, which is simple enough. However, silicon IPs for these SoCs are usually shared heavily across a family of processors, even products from different companies. This makes the original simple driver name based matching insufficient, or simply not straight-forward. Introduce a module id table for platform devices, and makes it clear that a platform driver is able to support some shared IP and handle slight differences across different platforms (by 'driver_data'). Module alias is handled automatically when a MODULE_DEVICE_TABLE() is defined. To not disturb the current platform drivers too much, the matched id entry is recorded and can be retrieved by platform_get_device_id(). Signed-off-by: Eric Miao <eric.miao@marvell.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* platform: make better use of to_platform_{device,driver}() macrosEric Miao2009-03-243-16/+11
| | | | | | | | | This helps the code look more consistent and cleaner. Signed-off-by: Eric Miao <eric.miao@marvell.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: check bus->match without holding device lockMing Lei2009-03-243-13/+13
| | | | | | | | | | | | | | | | | | | | | | This patch moves bus->match out from driver_probe_device and does not hold device lock to check the match between a device and a driver. The idea has been verified by the commit 6cd495860901, which leads to a faster boot. But the commit 6cd495860901 has the following drawbacks: 1),only does the quick check in the path of __driver_attach->driver_probe_device, not in other paths; 2),for a matched device and driver, check the same match twice. It is a waste of cpu ,especially for some drivers with long device id table (eg. usb-storage driver). This patch adds a helper of driver_match_device to check the match in all paths, and testes the match only once. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: get rid of struct device's bus_id string arrayKay Sievers2009-03-241-20/+19
| | | | | | | | | Now that all users of bus_id is gone, we can remove it from struct device. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: FHCI: use dev_name() in place of bus_id.Sachin Sant2009-03-242-3/+3
| | | | | | | | | | | | | | Replace references to bus_id with dev_name() to fix fhci driver build break. drivers/usb/host/fhci-hcd.c:586: error: struct device has no member named bus_id drivers/usb/host/fhci-hcd.c:653: error: struct device has no member named bus_id drivers/usb/host/fhci-dbg.c:111: error: struct device has no member named bus_id Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usb: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-242-3/+3
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* wimax: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-242-2/+2
| | | | | | | Cc: inaky.perez-gonzalez@intel.com Cc: linux-wimax@intel.com Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* mfd: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-242-2/+2
| | | | | | Cc: sameo@openedhand.com Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* mca: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | | Cc: James.Bottomley@HansenPartnership.com Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* gpio: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+1
| | | | | | Cc: Michael Buesch <mb@bu3sch.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* eisa: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* dma: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+1
| | | | | | Cc: Dan Williams <dan.j.williams@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* dio: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* amba: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* v4l: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-242-2/+3
| | | | | | | Cc: mchehab@infradead.org Cc: linux-media@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* drm: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | | Cc: airlied@linux.ie Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* net: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-2419-50/+54
| | | | | | | Cc: davem@davemloft.net Cc: netdev@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* rtc: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-243-5/+5
| | | | | | | | Cc: a.zummo@towertech.it Cc: rtc-linux@googlegroups.com Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pcmcia: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+1
| | | | | | | Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: linux-pcmcia@lists.infradead.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* tc: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-4/+4
| | | | | | Cc: macro@linux-mips.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* sh: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-242-6/+6
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* serial: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | | Cc: davem@davemloft.net Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* s390: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+1
| | | | | | | Cc: schwidefsky@de.ibm.com Cc: linux-s390@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* rapidio: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+1
| | | | | | Cc: mporter@kernel.crashing.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* pci: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+2
| | | | | | | Cc: jbarnes@virtuousgeek.org Cc: linux-pci@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* mtd: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-1/+1
| | | | | | | Cc: dwmw2@infradead.org Cc: linux-mtd@lists.infradead.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* mmc: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-242-2/+2
| | | | | | Cc: drzeus-mmc@drzeus.cx Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* zorro: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* video: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-245-19/+21
| | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* spi: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-2411-23/+25
| | | | | | | Cc: dbrownell@users.sourceforge.net Cc: spi-devel-general@lists.sourceforge.net Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* edac: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-243-6/+6
| | | | | | | Cc: dougthompson@xmission.com Cc: bluesmoke-devel@lists.sourceforge.net Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-03-2322-103/+236
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits) ucc_geth: Fix oops when using fixed-link support dm9000: locking bugfix net: update dnet.c for bus_id removal dnet: DNET should depend on HAS_IOMEM dca: add missing copyright/license headers nl80211: Check that function pointer != NULL before using it sungem: missing net_device_ops be2net: fix to restore vlan ids into BE2 during a IF DOWN->UP cycle be2net: replenish when posting to rx-queue is starved in out of mem conditions bas_gigaset: correctly allocate USB interrupt transfer buffer smsc911x: reset last known duplex and carrier on open sh_eth: Fix mistake of the address of SH7763 sh_eth: Change handling of IRQ netns: oops in ip[6]_frag_reasm incrementing stats net: kfree(napi->skb) => kfree_skb net: fix sctp breakage ipv6: fix display of local and remote sit endpoints net: Document /proc/sys/net/core/netdev_budget tulip: fix crash on iface up with shirq debug virtio_net: Make virtio_net support carrier detection ...
| * ucc_geth: Fix oops when using fixed-link supportAnton Vorontsov2009-03-222-26/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit b1c4a9dddf09fe99b8f88252718ac5b357363dc4 ("ucc_geth: Change uec phy id to the same format as gianfar's") introduced a regression in the ucc_geth driver that causes this oops when fixed-link is used: Unable to handle kernel paging request for data at address 0x00000000 Faulting instruction address: 0xc0151270 Oops: Kernel access of bad area, sig: 11 [#1] TMCUTU NIP: c0151270 LR: c0151270 CTR: c0017760 REGS: cf81fa60 TRAP: 0300 Not tainted (2.6.29-rc8) MSR: 00009032 <EE,ME,IR,DR> CR: 24024042 XER: 20000000 DAR: 00000000, DSISR: 20000000 TASK = cf81cba0[1] 'swapper' THREAD: cf81e000 GPR00: c0151270 cf81fb10 cf81cba0 00000000 c0272e20 c025f354 00001e80 cf86b08c GPR08: d1068200 cffffb74 06000000 d106c200 42024042 10085148 0fffd000 0ffc81a0 GPR16: 00000001 00000001 00000000 007ffeb0 00000000 0000c000 cf83f36c cf83f000 GPR24: 00000030 cf83f360 cf81fb20 00000000 d106c200 20000000 00001e80 cf83f360 NIP [c0151270] ucc_geth_open+0x330/0x1efc LR [c0151270] ucc_geth_open+0x330/0x1efc Call Trace: [cf81fb10] [c0151270] ucc_geth_open+0x330/0x1efc (unreliable) [cf81fba0] [c0187638] dev_open+0xbc/0x12c [cf81fbc0] [c0187e38] dev_change_flags+0x8c/0x1b0 This patch fixes the issue by removing offending (and somewhat duplicate) code from init_phy() routine, and changes _probe() function to use uec_mdio_bus_name(). Also, since we fully construct phy_bus_id in the _probe() routine, we no longer need ->phy_address and ->mdio_bus fields in ucc_geth_info structure. I wish the patch would be a bit shorter, but it seems like the only way to fix the issue in a sane way. Luckily, the patch has been tested with real PHYs and fixed-link, so no further regressions expected. Reported-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Tested-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David S. Miller <davem@davemloft.net>
| * dm9000: locking bugfixDavid Brownell2009-03-221-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a locking bug in the dm9000 driver. It calls request_irq() without setting IRQF_DISABLED ... which is correct for handlers that support IRQ sharing, since that behavior is not guaranteed for shared IRQs. However, its IRQ handler then wrongly assumes that IRQs are blocked. So the fix just uses the right spinlock primitives in the IRQ handler. NOTE: this is a classic example of the type of bug which lockdep currently masks by forcibly setting IRQF_DISABLED on IRQ handlers that did not request that flag. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: update dnet.c for bus_id removalStephen Rothwell2009-03-221-3/+3
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * dnet: DNET should depend on HAS_IOMEMIlya Yanok2009-03-211-1/+1
| | | | | | | | | | Signed-off-by: Ilya Yanok <yanok@emcraft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * dca: add missing copyright/license headersMaciej Sosnowski2009-03-211-0/+21
| | | | | | | | | | | | | | | | In two dca files copyright and license headers are missing. This patch adds them there. Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sungem: missing net_device_opsStephen Hemminger2009-03-191-5/+4
| | | | | | | | | | | | | | | | Sungem driver only got partially converted to net_device_ops. Since this could cause bugs, please push this to 2.6.29 Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * be2net: fix to restore vlan ids into BE2 during a IF DOWN->UP cycleSathya Perla2009-03-191-5/+5
| | | | | | | | | | | | | | This is a patch to reconfigure vlan-ids during an i/f down/up cycle Signed-off-by: Sathya Perla <sathyap@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * be2net: replenish when posting to rx-queue is starved in out of mem conditionsSathya Perla2009-03-192-21/+30
| | | | | | | | | | | | | | | | This is a patch to replenish the rx-queue when it is in a starved state (due to out-of-mem conditions) Signed-off-by: Sathya Perla <sathyap@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bas_gigaset: correctly allocate USB interrupt transfer bufferTilman Schmidt2009-03-181-3/+13
| | | | | | | | | | | | | | | | | | | | Every USB transfer buffer has to be allocated individually by kmalloc. Impact: bugfix, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> Tested-by: Kolja Waschk <kawk@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * smsc911x: reset last known duplex and carrier on openSteve Glendinning2009-03-181-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | smsc911x_phy_adjust_link is called periodically by the phy layer (as it's run in polling mode), and it only updates the hardware when it sees a change in duplex or carrier. This patch clears the last known values every time the interface is brought up, instead of only when the module is loaded. Without this patch the adjust_link function never updates the hardware after an ifconfig down; ifconfig up. On a full duplex link this causes the tx error counter to increment, even though packets are correctly transmitted, as the default MAC_CR register setting is for half duplex. The tx errors are "no carrier" errors, which should be ignored in full-duplex mode. When MAC_CR is set to "full duplex" mode they are correctly ignored by the hardware. Note that even with this patch the tx error counter can increment if packets are transmitted between "ifconfig up" and the first phy poll interval. An improved solution would use the phy interrupt with phylib, but I haven't managed to make this work 100% robustly yet. Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sh_eth: Fix mistake of the address of SH7763Nobuhiro Iwamatsu2009-03-181-2/+2
| | | | | | | | | | | | | | | | Address of SH_TSU_ADDR and ARSTR of SH7763 was wrong. This revise it. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sh_eth: Change handling of IRQNobuhiro Iwamatsu2009-03-181-3/+17
| | | | | | | | | | | | | | | | | | Handling of IRQ of the SH7763/SH7764 CPU which sh_eth supported was changed. This revises it for this change. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * tulip: fix crash on iface up with shirq debugKyle McMartin2009-03-181-16/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tulip is currently doing request_irq before it has done its initialization. This is usually not a problem because it hasn't enable interrupts yet, but with DEBUG_SHIRQ on, we call the irq handler when registering the interrupt as a sanity check. This can result in a NULL ptr dereference, so call tulip_init_ring before request_irq, and add a free_ring function to do the freeing now shared with tulip_close. Tested with a shell loop running ifup, ifdown in a loop a few hundred times with DEBUG_SHIRQ on. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * virtio_net: Make virtio_net support carrier detectionPantelis Koukousoulas2009-03-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: Make NetworkManager work with virtio_net For now the semantics are simple: There is always carrier. This allows a seamless experience with e.g., qemu/kvm where NetworkManager just configures and sets up everything automagically. If/when a generally agreed-upon way to control carrier on/off in the emulator/hypervisor level emerges, it will be trivial to extend the driver to support that too, but for now even this 2-liner makes user experience that much better. Signed-off-by: Pantelis Koukousoulas <pktoss@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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