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2014-06-11net/mlx4_core: Keep only one driver entry release mlx4_privWei Yang
Following commit befdf89 "net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()", there are two mlx4 pci callbacks which will attempt to release the mlx4_priv object -- .shutdown and .remove. This leads to a use-after-free access to the already freed mlx4_priv instance and trigger a "Kernel access of bad area" crash when both .shutdown and .remove are called. During reboot or kexec, .shutdown is called, with the VFs probed to the host going through shutdown first and then the PF. Later, the PF will trigger VFs' .remove since VFs still have driver attached. Fix that by keeping only one driver entry which releases mlx4_priv. Fixes: befdf89 ('net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()') CC: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-11net/mlx4_core: Fix SRIOV free-pool management when enforcing resource quotasJack Morgenstein
The Hypervisor driver tracks free slots and reserved slots at the global level and tracks allocated slots and guaranteed slots per VF. Guaranteed slots are treated as reserved by the driver, so the total reserved slots is the sum of all guaranteed slots over all the VFs. As VFs allocate resources, free (global) is decremented and allocated (per VF) is incremented for those resources. However, reserved (global) is never changed. This means that effectively, when a VF allocates a resource from its guaranteed pool, it is actually reducing that resource's free pool (since the global reserved count was not also reduced). The fix for this problem is the following: For each resource, as long as a VF's allocated count is <= its guaranteed number, when allocating for that VF, the reserved count (global) should be reduced by the allocation as well. When the global reserved count reaches zero, the remaining global free count is still accessible as the free pool for that resource. When the VF frees resources, the reverse happens: the global reserved count for a resource is incremented only once the VFs allocated number falls below its guaranteed number. This fix was developed by Rick Kready <kready@us.ibm.com> Reported-by: Rick Kready <kready@us.ibm.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>
2014-06-11net: wimax: i2400m: control.c: Cleaning up conjunction always evaluates to falseRickard Strandqvist
Logical conjunction always evaluates to false: minor < 2 && minor > 1 I guess what you wanted is rather: minor > 2 || minor < 1 This was partly found using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-11net: ethernet: toshiba: ps3_gelic_net.c: Cleaning up a check on a memory ↵Rickard Strandqvist
allocation A check on a memory allocation is checked incorrectly. This was partly found using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Acked-by: Geoff Levand <geoff@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-11amd-xgbe: fix unused variable compilation warning in phylib driverfrançois romieu
Fix following compilation warning: [...] CC drivers/net/phy/amd-xgbe-phy.o drivers/net/phy/amd-xgbe-phy.c:1353:30: warning: ‘amd_xgbe_phy_ids’ defined but not used [-Wunused-variable] static struct mdio_device_id amd_xgbe_phy_ids[] = { ^ Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-11powerpc/cpuidle: Only clear LPCR decrementer wakeup bit on fast sleep entryMichael Neuling
Currently when entering fastsleep we clear all LPCR PECE bits. This patch changes it to only clear the decrementer bit (ie. PECE1), which is the only bit we really need to clear here. This is needed if we want to set other wakeup causes like the PECEDH bit so we can use hypervisor doorbells on powernv. Also we no longer clear the MER bit as it should never be set in the host anyway. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11crypto/nx: disable NX on little endian buildsAnton Blanchard
The NX driver has endian issues so disable it for now. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11Merge branch 'drm-nouveau-next' of ↵Dave Airlie
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next display rework fixes lots of displayport issues. * 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (43 commits) drm/nouveau/disp/dp: fix tmds passthrough on dp connector drm/nouveau/dp: probe dpcd to determine connectedness drm/nv50-: trigger update after all connectors disabled drm/nv50-: prepare for attaching a SOR to multiple heads drm/gf119-/disp: fix debug output on update failure drm/nouveau/disp/dp: make use of postcursor when its available drm/g94-/disp/dp: take max pullup value across all lanes drm/nouveau/bios/dp: parse lane postcursor data drm/nouveau/dp: fix support for dpms drm/nouveau: register a drm_dp_aux channel for each dp connector drm/g94-/disp: add method to power-off dp lanes drm/nouveau/disp/dp: maintain link in response to hpd signal drm/g94-/disp: bash and wait for something after changing lane power regs drm/nouveau/disp/dp: split link config/power into two steps drm/nv50/disp: train PIOR-attached DP from second supervisor drm/nouveau/disp/dp: make use of existing output data for link training drm/gf119/disp: start removing direct vbios parsing from supervisor drm/nv50/disp: start removing direct vbios parsing from supervisor drm/nouveau/disp/dp: maintain receiver caps in response to hpd signal drm/nouveau/disp/dp: create subclass for dp outputs ...
2014-06-11drm/nouveau/disp/dp: fix tmds passthrough on dp connectorBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/dp: probe dpcd to determine connectednessBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nv50-: trigger update after all connectors disabledBen Skeggs
We were sending the necessary state changes to unset the mode, but never actually hit the big GO button unless another modeset happens afterwards. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nv50-: prepare for attaching a SOR to multiple headsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/gf119-/disp: fix debug output on update failureBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: make use of postcursor when its availableBen Skeggs
And at the same time, obey the spec better wrt out-of-range requests. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/g94-/disp/dp: take max pullup value across all lanesBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/bios/dp: parse lane postcursor dataBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/dp: fix support for dpmsBen Skeggs
SOR_PWR has no effect to power-off DP links, unlike other SOR protocols. Instead, on the source side, we cut power to the lanes after having put the sink into D3. Link training takes care of everything required to bring it back again. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau: register a drm_dp_aux channel for each dp connectorBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/g94-/disp: add method to power-off dp lanesBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: maintain link in response to hpd signalBen Skeggs
This previously worked for the most part due to userspace doing a modeset in response to HPD interrupts. This will allow us to properly handle cases where sync is lost for other reasons, or if userspace isn't caring. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/g94-/disp: bash and wait for something after changing lane power regsBen Skeggs
Some kind of update? Needed to make the power-down take effect at least. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: split link config/power into two stepsBen Skeggs
We want to be able to power down the lanes for DPMS off. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nv50/disp: train PIOR-attached DP from second supervisorBen Skeggs
Same place as for SOR, between detach and attach phases. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: make use of existing output data for link trainingBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/gf119/disp: start removing direct vbios parsing from supervisorBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nv50/disp: start removing direct vbios parsing from supervisorBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: maintain receiver caps in response to hpd signalBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: create subclass for dp outputsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau: use connector events for HPD instead of GPIO watchingBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp: add internal representaion of output paths and connectorsBen Skeggs
This will, at some point, be used to replace various bits and pieces of code doing direct bios parsing. For now, it'll just be used for some DP improvements. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/bios: extend connector table parsingBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp: nothing to see hereBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c/anx9805: add debugging to aux transactionsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c: introduce locking at a per-port levelBen Skeggs
There's also provisions to allow a pad to be locked with a specific routing, for an indefinite period of time. This will be used in future patches. The G94+ pad driver will now also power-down pads when not required. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c: balance port acquire/releaseBen Skeggs
This was a half-finished hack before, just enough to handle the shared aux/i2c pad thing on G94 and up. We got lucky with locking etc up until now, as this was (generally) all protected by the DRM mode_config lock. It's about to become a lot more likely to hit the races. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/gk104/i2c: add aux channel interrupt driverBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/g94/i2c: add aux channel interrupt driverBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c: add interfaces to support handling aux channel interruptsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c: start hiding subdev-internal interfacesBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c: remove unnecessary i2c_set_adapdata()Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/i2c: properly hand aux reply back to caller, and only retry on deferBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nv50-/mc: also pass PMGR interrupts onto I2C subdevBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/gpio: send separate event types for high/low transitionsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/gpio: use base constructor for all implementationsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/gpio: move on-reset intr disable-and-ack to common codeBen Skeggs
Re-uses the implementation's accessor functions rather than requiring and init/fini implementation for each chipset. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/gpio: split "toggled" interrupt into "went high" / "went low"Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/gpio: split g92 class from nv50Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/gpio: use indirect pointer to base class definitionBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: support training to highest rate, rather than a targetBen Skeggs
We really want this for, at least, MST devices. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-06-11drm/nouveau/disp/dp: support postcursor in link trainingBen Skeggs
Not enabled at the backends yet, but will read status and send back max reached at level 0. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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