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* KVM: cleanup (physical) CPU hotplugPaolo Bonzini2013-09-301-9/+8
| | | | | | | | | | | Remove the useless argument, and do not do anything if there are no VMs running at the time of the hotplug. Cc: kvm@vger.kernel.org Cc: gleb@redhat.com Cc: jan.kiszka@siemens.com Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Do not generate #DF if #PF happens during exception delivery into L2Gleb Natapov2013-09-301-0/+20
| | | | | | | | | | | | | If #PF happens during delivery of an exception into L2 and L1 also do not have the page mapped in its shadow page table then L0 needs to generate vmexit to L2 with original event in IDT_VECTORING_INFO, but current code combines both exception and generates #DF instead. Fix that by providing nVMX specific function to handle page faults during page table walk that handles this case correctly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Check all exceptions for intercept during delivery to L2Gleb Natapov2013-09-301-8/+4
| | | | | | | | | | | All exceptions should be checked for intercept during delivery to L2, but we check only #PF currently. Drop nested_run_pending while we are at it since exception cannot be injected during vmentry anyway. Signed-off-by: Gleb Natapov <gleb@redhat.com> [Renamed the nested_vmx_check_exception function. - Paolo] Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Do not put exception that caused vmexit to IDT_VECTORING_INFOGleb Natapov2013-09-301-4/+4
| | | | | | | | | | | | | | | If an exception causes vmexit directly it should not be reported in IDT_VECTORING_INFO during the exit. For that we need to be able to distinguish between exception that is injected into nested VM and one that is reinjected because its delivery failed. Fortunately we already have mechanism to do so for nested SVM, so here we just use correct function to requeue exceptions and make sure that reinjected exception is not moved to IDT_VECTORING_INFO during vmexit emulation and not re-checked for interception during delivery. Signed-off-by: Gleb Natapov <gleb@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Amend nested_run_pending logicGleb Natapov2013-09-301-14/+12
| | | | | | | | | | | | EXIT_REASON_VMLAUNCH/EXIT_REASON_VMRESUME exit does not mean that nested VM will actually run during next entry. Move setting nested_run_pending closer to vmentry emulation code and move its clearing close to vmexit to minimize amount of code that will erroneously run with nested_run_pending set. Signed-off-by: Gleb Natapov <gleb@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Intercept SCK instructionThomas Huth2013-09-241-0/+33
| | | | | | | | | | | Interception of the SET CLOCK instruction is mandatory, so this patch provides a simple handler for this instruction (by setting up the "epoch" field in the sie_block). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Implement TEST BLOCKThomas Huth2013-09-241-0/+28
| | | | | | | | | | | This patch provides a simple version for the mandatory TEST BLOCK instruction interception, so that guests that use this instruction do not crash anymore. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Helper for converting real addresses to absoluteThomas Huth2013-09-241-7/+14
| | | | | | | | | Added a separate helper function that translates guest real addresses to guest absolute addresses by applying the prefix of the guest CPU. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Allow NULL parameter for kvm_s390_get_regs_rreThomas Huth2013-09-241-2/+4
| | | | | | | | | | | We're not always interested in both registers that are specified for an RRE instruction. So allow NULL as parameter, too, to indicate that we do not need the corresponding value. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Lock kvm->srcu at the appropriate placesThomas Huth2013-09-243-3/+16
| | | | | | | | | | | | The kvm->srcu lock has to be held while accessing the memory of guests and during certain other actions. This patch now adds the locks to the __vcpu_run function so that all affected code is protected now (and additionally to the KVM_S390_STORE_STATUS ioctl, which can be called out-of-band and needs a separate lock). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Push run loop into __vcpu_runThomas Huth2013-09-241-24/+25
| | | | | | | | | | Moved the do-while loop from kvm_arch_vcpu_ioctl_run into __vcpu_run and the calling of kvm_handle_sie_intercept() into vcpu_post_run() (so we can add the srcu locks in a proper way in the next patch). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Split up __vcpu_run into three partsThomas Huth2013-09-241-17/+37
| | | | | | | | | | | | In preparation for the following patch (which will change the indentation of __vcpu_run quite a bit), this patch puts most of the code from __vcpu_run into separate functions. The first function handles the code that runs before the SIE instruction and the other one handles the code that runs afterwards. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: s390: Remove dead "rerun vcpu" codeThomas Huth2013-09-244-13/+1
| | | | | | | | | | | | The need for SIE_INTERCEPT_RERUNVCPU has been removed long ago already, with the following commit: f7850c92884b40915001e332a0a33ed4f10158e8 [S390] remove kvm mmu reload on s390 Since the remainders are dead code, they are now removed by this patch. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Documentation/kvm: Update cpuid documentation for steal time and pv eoiRaghavendra K T2013-09-241-0/+7
| | | | | | | | Thanks Michael S Tsirkin for rewriting the description and suggestions. Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
* KVM: nVMX: Enable unrestricted guest mode supportJan Kiszka2013-09-241-4/+14
| | | | | | | | | | | Now that we provide EPT support, there is no reason to torture our guests by hiding the relieving unrestricted guest mode feature. We just need to relax CR0 checks for always-on bits as PE and PG can now be switched off. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Implement support for EFER saving on VM-exitJan Kiszka2013-09-241-1/+3
| | | | | | | | | | Implement and advertise VM_EXIT_SAVE_IA32_EFER. L0 traps EFER writes unconditionally, so we always find the current L2 value in the architectural state. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Do not set identity page map for L2Jan Kiszka2013-09-241-2/+4
| | | | | | | | | | | Fiddling with CR3 for L2 is L1's job. It may set its own, different identity map or simple leave it alone if unrestricted guest mode is enabled. This also fixes reading back the current CR3 on L2 exits for reporting it to L1. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: nVMX: Replace kvm_set_cr0 with vmx_set_cr0 in load_vmcs12_host_stateJan Kiszka2013-09-241-1/+1
| | | | | | | | | | | kvm_set_cr0 performs checks on the state transition that may prevent loading L1's cr0. For now we rely on the hardware to catch invalid states loaded by L1 into its VMCS. Still, consistency checks on the host state part of the VMCS on guest entry will have to be improved later on. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* kvm: remove .done from struct kvm_async_pfRadim Krčmář2013-09-242-5/+1
| | | | | | | | | | | '.done' is used to mark the completion of 'async_pf_execute()', but 'cancel_work_sync()' returns true when the work was canceled, so we use it instead. Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* KVM: Add documentation for kvm->srcu lockThomas Huth2013-09-241-0/+11
| | | | | | | | | | | This patch documents the kvm->srcu lock (using the information from a mail which has been posted by Marcelo Tosatti to the kvm mailing list some months ago, see the following URL for details: http://www.mail-archive.com/kvm@vger.kernel.org/msg90040.html ) Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Linux 3.12-rc2v3.12-rc2Linus Torvalds2013-09-241-1/+1
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* Merge tag 'staging-3.12-rc2' of ↵Linus Torvalds2013-09-2335-97/+160
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging fixes from Greg KH: "Here are a number of small staging tree and iio driver fixes. Nothing major, just lots of little things" * tag 'staging-3.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (34 commits) iio:buffer_cb: Add missing iio_buffer_init() iio: Prevent race between IIO chardev opening and IIO device free iio: fix: Keep a reference to the IIO device for open file descriptors iio: Stop sampling when the device is removed iio: Fix crash when scan_bytes is computed with active_scan_mask == NULL iio: Fix mcp4725 dev-to-indio_dev conversion in suspend/resume iio: Fix bma180 dev-to-indio_dev conversion in suspend/resume iio: Fix tmp006 dev-to-indio_dev conversion in suspend/resume iio: iio_device_add_event_sysfs() bugfix staging: iio: ade7854-spi: Fix return value staging:iio:hmc5843: Fix measurement conversion iio: isl29018: Fix uninitialized value staging:iio:dummy fix kfifo_buf kconfig dependency issue if kfifo modular and buffer enabled for built in dummy driver. iio: at91: fix adc_clk overflow staging: line6: add bounds check in snd_toneport_source_put() Staging: comedi: Fix dependencies for drivers misclassified as PCI staging: r8188eu: Adjust RX gain staging: r8188eu: Fix smatch warning in core/rtw_ieee80211. staging: r8188eu: Fix smatch error in core/rtw_mlme_ext.c staging: r8188eu: Fix Smatch off-by-one warning in hal/rtl8188e_hal_init.c ...
| * Merge tag 'iio-fixes-for-3.12a' of ↵Greg Kroah-Hartman2013-09-2213-36/+91
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: First round of IIO fixes for 3.12 A series of wrong 'struct dev' assumptions in suspend/resume callbacks following on from this issue being identified in a new driver review. One to watch out for in future. A number of driver specific fixes 1) at91 - fix a overflow in clock rate computation 2) dummy - Kconfig dependency issue 3) isl29018 - uninitialized value 4) hmc5843 - measurement conversion bug introduced by recent cleanup. 5) ade7854-spi - wrong return value. Some IIO core fixes 1) Wrong value picked up for event code creation for a modified channel 2) A null dereference on failure to initialize a buffer after no buffer has been in use, when using the available_scan_masks approach. 3) Sampling not stopped when a device is removed. Effects forced removal such as hot unplugging. 4) Prevent device going away if a chrdev is still open in userspace. 5) Prevent race on chardev opening and device being freed. 6) Add a missing iio_buffer_init in the call back buffer. These last few are the first part of a set from Lars-Peter Clausen who has been taking a closer look at our removal paths and buffer handling than anyone has for quite some time.
| | * iio:buffer_cb: Add missing iio_buffer_init()Lars-Peter Clausen2013-09-211-0/+2
| | | | | | | | | | | | | | | | | | | | | Make sure to properly initialize the IIO buffer data structure. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: Prevent race between IIO chardev opening and IIO device freeLars-Peter Clausen2013-09-211-9/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set the IIO device as the parent for the character device We need to make sure that the IIO device is not freed while the character device exists, otherwise the freeing of the IIO device might race against the file open callback. Do this by setting the character device's parent to the IIO device, this will cause the character device to grab a reference to the IIO device and only release it once the character device itself has been removed. Also move the registration of the character device before the registration of the IIO device to avoid the (rather theoretical case) that the IIO device is already freed again before we can add the character device and grab a reference to the IIO device. We also need to move the call to cdev_del() from iio_dev_release() to iio_device_unregister() (where it should have been in the first place anyway) to avoid a reference cycle. As iio_dev_release() is only called once all reference are dropped, but the character device holds a reference to the IIO device. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: fix: Keep a reference to the IIO device for open file descriptorsLars-Peter Clausen2013-09-212-5/+17
| | | | | | | | | | | | | | | | | | | | | | | | Make sure that the IIO device is not freed while we still have file descriptors for it. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: Stop sampling when the device is removedLars-Peter Clausen2013-09-213-1/+28
| | | | | | | | | | | | | | | | | | | | | | | | Make sure to stop sampling when the device is removed, otherwise it will continue to sample forever. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: Fix crash when scan_bytes is computed with active_scan_mask == NULLPeter Meerwald2013-09-211-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | if device has available_scan_masks set and the buffer is enabled without any scan_elements enabled, in a NULL pointer is dereferenced in iio_compute_scan_bytes() [ 18.993713] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 19.002593] pgd = debd4000 [ 19.005432] [00000000] *pgd=9ebc0831, *pte=00000000, *ppte=00000000 [ 19.012329] Internal error: Oops: 17 [#1] PREEMPT ARM [ 19.017639] Modules linked in: [ 19.020843] CPU: 0 Not tainted (3.9.11-00036-g75c888a-dirty #207) [ 19.027587] PC is at _find_first_bit_le+0xc/0x2c [ 19.032440] LR is at iio_compute_scan_bytes+0x2c/0xf4 [ 19.037719] pc : [<c021dc60>] lr : [<c03198d0>] psr: 200d0013 [ 19.037719] sp : debd9ed0 ip : 00000000 fp : 000802bc [ 19.049713] r10: 00000000 r9 : 00000000 r8 : deb67250 [ 19.055206] r7 : 00000000 r6 : 00000000 r5 : 00000000 r4 : deb67000 [ 19.062011] r3 : de96ec00 r2 : 00000000 r1 : 00000004 r0 : 00000000 [ 19.068847] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 19.076324] Control: 10c5387d Table: 9ebd4019 DAC: 00000015 problem is the rollback code in iio_update_buffers(), old_mask may be NULL (e.g. on first call) I'm not too confident about the fix; works for me... Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: Fix mcp4725 dev-to-indio_dev conversion in suspend/resumePeter Meerwald2013-09-211-6/+6
| | | | | | | | | | | | | | | | | | | | | dev_to_iio_dev() is a false friend Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: Fix bma180 dev-to-indio_dev conversion in suspend/resumePeter Meerwald2013-09-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | dev_to_iio_dev() is a false friend Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: Fix tmp006 dev-to-indio_dev conversion in suspend/resumePeter Meerwald2013-09-211-2/+4
| | | | | | | | | | | | | | | | | | | | | dev_to_iio_dev() is a false friend Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: iio_device_add_event_sysfs() bugfixLukasz Czerwinski2013-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | Fix mask generation for modified channels. Signed-off-by: Lukasz Czerwinski <l.czerwinski@samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * staging: iio: ade7854-spi: Fix return valueSachin Kamat2013-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | ade7854_probe can fail. Return the value obtained from it instead of 0 (success). Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Barry Song <21cnbao@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * staging:iio:hmc5843: Fix measurement conversionPeter Meerwald2013-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | recently broken, cd6fe06588423ff4cca85c85c4402027b04dccf1 staging:iio:hmc5843: Use i2c_smbus_read_word_swapped() Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: isl29018: Fix uninitialized valueDerek Basehore2013-09-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lux_uscale value is not initialized at probe. The value will be uninitialized unless a value is written to it through the iio channel interface. This fixes that. Signed-off-by: Derek Basehore <dbasehore@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/65998 Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * staging:iio:dummy fix kfifo_buf kconfig dependency issue if kfifo modular ↵Jonathan Cameron2013-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | and buffer enabled for built in dummy driver. This only occurs in the unlikely event that the example driver is built in whilst the buffer implementation is not. Solved by switching from a depends on to a select for this particular case. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| | * iio: at91: fix adc_clk overflowJosh Wu2013-09-181-5/+6
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | The adc_clk variable is currently defined using a 32-bits unsigned integer, which will overflow under some very valid range of operations. Such overflow will occur if, for example, the parent clock is set to a 20MHz frequency and the ADC startup time is larger than 215ns. To fix this, introduce an intermediate variable holding the clock rate in kHz. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * staging: line6: add bounds check in snd_toneport_source_put()Dan Carpenter2013-09-171-3/+7
| | | | | | | | | | | | | | | | | | "source" comes from the user in snd_ctl_elem_write() so it needs to be checked. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * Staging: comedi: Fix dependencies for drivers misclassified as PCIBen Hutchings2013-09-171-16/+17
| | | | | | | | | | | | | | | | | | | | | | | | The Fastwel UNIOxx-5 is a PC/104 board, so put COMEDI_UNIOXX5 under COMEDI_ISA_DRIVERS. The DIL/Net-PC 1486 is a 486 system, so put COMEDI_SSV_DNP under COMEDI_MISC_DRIVERS and add a dependency on X86_32 || COMPILE_TEST. Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: r8188eu: Adjust RX gainLarry Finger2013-09-171-1/+1
| | | | | | | | | | | | | | | | | | In some circumstances, the performance of this driver is highly degraded, and ifconfig reports large numbers of dropped packets. By increasing the maximum RX gain from 0x3e to 0x4e, performance is greatly improved. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: r8188eu: Fix smatch warning in core/rtw_ieee80211.Larry Finger2013-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | Smatch shows the following warning: drivers/staging/rtl8188eu/core/rtw_ieee80211.c:161 rtw_set_ie() info: ignoring unreachable code. The cause is a module exit tracing statement after a return. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: r8188eu: Fix smatch error in core/rtw_mlme_ext.cLarry Finger2013-09-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Smatch reports the following warning: "drivers/staging/rtl8188eu/core/rtw_mlme_ext.c:8328 mlme_evt_hdl() error: buffer overflow 'wlanevents' 24 <= 24" 8321 /* checking if event code is valid */ 8322 if (evt_code >= MAX_C2HEVT) { ^^^^^^^^^^^^^^^^^^^^^^ 8323 RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, ("\nEvent Code(%d) mismatch!\n", evt_code)); 8324 goto _abort_event_; 8325 } 8326 8327 /* checking if event size match the event parm size */ 8328 if ((wlanevents[evt_code].parmsize != 0) && ^^^^^^^^^^^^^^^^^^^^ 8329 (wlanevents[evt_code].parmsize != evt_sz)) { 8330 RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, 8331 ("\nEvent(%d) Parm Size mismatch (%d vs %d)!\n", 8332 evt_code, wlanevents[evt_code].parmsize, evt_sz)); 8333 goto _abort_event_; 8334 } This warning results because the number of items in "enum rtw_c2h_event", which determines the value of MAX_C2HEVT, is one more than in "struct wlanevents". Adding an extra dummy event to the latter fixes the problem. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: r8188eu: Fix Smatch off-by-one warning in hal/rtl8188e_hal_init.cLarry Finger2013-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Smatch reports the following warning: "drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c:2008 Hal_ReadPowerValueFromPROM_8188E() error: buffer overflow 'pwrInfo24G->IndexBW40_Base[rfPath]' 5 <= 5" drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c 2005 /* 2.4G default value */ 2006 for (group = 0; group < MAX_CHNL_GROUP_24G; group++) { 2007 pwrInfo24G->IndexCCK_Base[rfPath][group] = EEPROM_DEFAULT_24G_INDEX; 2008 pwrInfo24G->IndexBW40_Base[rfPath][group] = EEPROM_DEFAULT_24G_INDEX; The reason is that IndexCCK_Base[] has MAX_CHNL_GROUP_24G elements, but IndexBW40_Base is smaller by 1. Make them both have MAX_CHNL_GROUP_24G elements. Reported by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: Disable lustre file system for MIPS, SH, and XTENSAGuenter Roeck2013-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mips allmodconfig fails with ERROR: "copy_from_user_page" [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined! which is due to LUSTRE using copy_from_user_page which is not exported by any architecture. Unfortunately, LUSTRE can only be built as module, so there is no easy fix. MIPS, SH, and optionally XTENSA implement copy_from_user_page as unexported functions. Disable LUSTRE for those. Cc: Peng Tao <bergwolf@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * Revert "staging: zram: Add auto loading of module if user opens /dev/zram."Greg Kroah-Hartman2013-09-171-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit c70bda992c12e593e411c02a52e4bd6985407539. It's incorrect, Kay writes: Please just remove it. "devname" is meant to be used for single-instance devices with a static dev_t, never for things like zramX. It will not do anything useful here, it does nothing really without a statically assigned dev_t, and it should not be used for devices of this kind anyway. Reported-by: Tom Gundersen <teg@jklm.no> Reported-by: Kay Sievers <kay@vrfy.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: octeon-ethernet: rgmii: enable interrupts that we can handleAaro Koskinen2013-09-171-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable only those interrupts that we can handle & acknowledge in the interrupt handler. At least on EdgeRouter Lite, the hardware may occasionally interrupt with some error condition when the physical link status changes frequently. Since the interrupt condition is not acked properly, this leads to the following warning and the IRQ gets disabled completely: [ 41.324700] eth0: Link down [ 44.324721] eth0: 1000 Mbps Full duplex, port 0, queue 0 [ 44.885590] irq 117: nobody cared (try booting with the "irqpoll" option) [ 44.892397] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.11.0-rc5-edge-los.git-27d042f-dirty-00950-gaa42f2d-dirty #8 [ 44.902825] Stack : ffffffff815c0000 0000000000000004 0000000000000003 0000000000000000 ffffffff81fd0000 ffffffff815c0000 0000000000000004 ffffffff8118530c ffffffff815c0000 ffffffff811858d8 0000000000000000 0000000000000000 ffffffff81fd0000 ffffffff81fc0000 ffffffff8152f3a0 ffffffff815b7bf7 ffffffff81fc6688 ffffffff815b8060 0000000000000000 0000000000000000 0000000000000000 ffffffff815346c8 ffffffff815346b0 ffffffff814a6a18 ffffffff8158b848 ffffffff81145614 ffffffff81593800 ffffffff81187174 ffffffff815b7d00 ffffffff8158b760 0000000000000000 ffffffff814a9184 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ffffffff811203b8 0000000000000000 0000000000000000 ... [ 44.968408] Call Trace: [ 44.970873] [<ffffffff811203b8>] show_stack+0x68/0x80 [ 44.975937] [<ffffffff814a9184>] dump_stack+0x78/0xb8 [ 44.980999] [<ffffffff811aac54>] __report_bad_irq+0x44/0x108 [ 44.986662] [<ffffffff811ab238>] note_interrupt+0x248/0x2a0 [ 44.992240] [<ffffffff811a85e4>] handle_irq_event_percpu+0x144/0x200 [ 44.998598] [<ffffffff811a86f4>] handle_irq_event+0x54/0x90 [ 45.004176] [<ffffffff811ab908>] handle_level_irq+0xd0/0x148 [ 45.009839] [<ffffffff811a7b04>] generic_handle_irq+0x34/0x50 [ 45.015589] [<ffffffff8111dae8>] do_IRQ+0x18/0x30 [ 45.020301] [<ffffffff8110486c>] plat_irq_dispatch+0x74/0xb8 [ 45.025958] [ 45.027451] handlers: [ 45.029731] [<ffffffff813fca10>] cvm_oct_rgmii_rml_interrupt [ 45.035397] Disabling IRQ #117 [ 45.038742] Port 0 receive error code 13, packet dropped [ 46.324719] eth0: Link down [ 48.324733] eth0: 1000 Mbps Full duplex, port 0, queue 0 Reported-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: octeon-ethernet: remove skb alloc failure warningsAaro Koskinen2013-09-172-9/+1
| | | | | | | | | | | | | | | | | | | | | | Remove skb allocation failure warnings. They will trigger a page allocation warning already. Also, one of the warnings was not ratelimited, causing the box to lock up under heavy traffic & low memory. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: octeon-ethernet: make dropped packets to consume NAPI budgetAaro Koskinen2013-09-171-1/+1
| | | | | | | | | | | | | | | | | | We should count also dropped packets, otherwise the NAPI handler may end up running too long. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c: rename PTRS_PER_PAGEAndrew Morton2013-09-171-2/+2
| | | | | | | | | | | | | | | | | | | | It duplicates the definition in arch/alpha/include/asm/pgtable.h and emits warnings. Cc: Andreas Dilger <andreas.dilger@intel.com> Cc: Peng Tao <tao.peng@emc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * staging: dgnc: fix potential format string flawKees Cook2013-09-171-2/+2
| | | | | | | | | | | | | | | | Make sure that format strings cannot leak into printk() calls from the msgbuf string. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 19:13:09 +0100