linux-stable.git/drivers/char, branch v4.3.5

ipmi: move timer init to before irq is setup

2016-01-31T19:25:44+00:00

commit 27f972d3e00b50639deb4cc1392afaeb08d3cecc upstream.

We encountered a panic on boot in ipmi_si on a dell per320 due to an
uninitialized timer as follows.

static int smi_start_processing(void       *send_info,
                                ipmi_smi_t intf)
{
        /* Try to claim any interrupts. */
        if (new_smi->irq_setup)
                new_smi->irq_setup(new_smi);

 --> IRQ arrives here and irq handler tries to modify uninitialized timer

    which triggers BUG_ON(!timer->function) in __mod_timer().

 Call Trace:
   
   [] start_new_msg+0x47/0x80 [ipmi_si]
   [] start_check_enables+0x4e/0x60 [ipmi_si]
   [] smi_event_handler+0x1e8/0x640 [ipmi_si]
   [] ? __rcu_process_callbacks+0x54/0x350
   [] si_irq_handler+0x3c/0x60 [ipmi_si]
   [] handle_IRQ_event+0x60/0x170
   [] handle_edge_irq+0xde/0x180
   [] handle_irq+0x49/0xa0
   [] do_IRQ+0x6c/0xf0
   [] ret_from_intr+0x0/0x11

        /* Set up the timer that drives the interface. */
        setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);

The following patch fixes the problem.

To: Openipmi-developer@lists.sourceforge.net
To: Corey Minyard 
CC: linux-kernel@vger.kernel.org

Signed-off-by: Jan Stancek 
Signed-off-by: Tony Camuso 
Signed-off-by: Corey Minyard 
Signed-off-by: Greg Kroah-Hartman

ipmi: Start the timer and thread on internal msgs

2016-01-31T19:25:44+00:00

commit 0cfec916e86d881e209de4b4ae9959a6271e6660 upstream.

The timer and thread were not being started for internal messages,
so in interrupt mode if something hung the timer would never go
off and clean things up.  Factor out the internal message sending
and start the timer for those messages, too.

Signed-off-by: Corey Minyard 
Tested-by: Gouji, Masayuki 
Signed-off-by: Greg Kroah-Hartman

tpm, tpm_tis: fix tpm_tis ACPI detection issue with TPM 2.0

2016-01-23T04:55:41+00:00

commit 399235dc6e95400a1322a9999e92073bc572f0c8 upstream.

Both for FIFO and CRB interface TCG has decided to use the same HID
MSFT0101. They can be differentiated by looking at the start method from
TPM2 ACPI table. This patches makes necessary fixes to tpm_tis and
tpm_crb modules in order to correctly detect, which module should be
used.

For MSFT0101 we must use struct acpi_driver because struct pnp_driver
has a 7 character limitation.

It turned out that the root cause in b371616b8 was not correct for
https://bugzilla.kernel.org/show_bug.cgi?id=98181.

v2:

* One fixup was missing from v1: is_tpm2_fifo -> is_fifo

v3:

* Use pnp_driver for existing HIDs and acpi_driver only for MSFT0101 in
  order ensure backwards compatibility.

v4:

* Check for FIFO before doing *anything* in crb_acpi_add().
* There was return immediately after acpi_bus_unregister_driver() in
  cleanup_tis(). This caused pnp_unregister_driver() not to be called.

Reported-by: Michael Saunders 
Reported-by: Michael Marley 
Reported-by: Jethro Beekman 
Reported-by: Matthew Garrett 
Signed-off-by: Jarkko Sakkinen 
Tested-by: Michael Marley 
Tested-by: Mimi Zohar  (on TPM 1.2)
Reviewed-by: Peter Huewe 
Signed-off-by: Peter Huewe 
Signed-off-by: Greg Kroah-Hartman

Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2015-09-27T01:05:23+00:00

Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - check the return value of platform_get_irq as signed int in xgene.

   - skip adf_dev_restore on virtual functions in qat.

   - fix double-free with backlogged requests in marvell_cesa"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  hwrng: xgene - fix handling platform_get_irq
  crypto: qat - VF should never trigger SBR on PH
  crypto: marvell - properly handle CRYPTO_TFM_REQ_MAY_BACKLOG-flagged requests

hwrng: xgene - fix handling platform_get_irq

2015-09-21T14:57:37+00:00

The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda 
Signed-off-by: Herbert Xu

Merge tag 'for-linus-4.3' of git://git.code.sf.net/p/openipmi/linux-ipmi

2015-09-09T01:19:17+00:00

Pull IPMI updates from Corey Minyard:
 "Most of these have been sitting in linux-next for more than a release,
  particularly commit 0fbcf4af7c83 ("ipmi: Convert the IPMI SI ACPI
  handling to a platform device") which is probably the most complex
  patch.

  That is also the one that changes drivers/acpi/acpi_pnp.c.  The change
  in that file is only removing IPMI from a "special platform devices"
  list, since I convert it to the standard PNP interface.  I posted this
  one to the ACPI list twice and got no response, and it seems to work
  well in my testing, so I'm hoping it's good.

  Hidehiro Kawai posted a set of changes that improves the panic time
  handling in the IPMI driver.

  The rest of the changes are minor bug fixes or cleanups and some
  documentation"

* tag 'for-linus-4.3' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi:ssif: Add a module parm to specify that SMBus alerts don't work
  ipmi: add of_device_id in MODULE_DEVICE_TABLE
  ipmi: Compensate for BMCs that wont set the irq enable bit
  ipmi: Don't call receive handler in the panic context
  ipmi: Avoid touching possible corrupted lists in the panic context
  ipmi: Don't flush messages in sender() in run-to-completion mode
  ipmi: Factor out message flushing procedure
  ipmi: Remove unneeded set_run_to_completion call
  ipmi: Make some data const that was only read
  ipmi: constify SSIF ACPI device ids
  ipmi: Delete an unnecessary check before the function call "cleanup_one_si"
  char:ipmi - Change 1 to true for bool type variables during initialization.
  impi:Remove unneeded setting of module owner to THIS_MODULE in the platform structure, powernv_ipmi_driver
  ipmi: Add a comment in how messages are delivered from the lower layer
  ipmi/powernv: Fix potential invalid pointer dereference
  ipmi: Convert the IPMI SI ACPI handling to a platform device
  ipmi: Add device tree bindings information

Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

2015-09-04T22:49:32+00:00

Pull drm updates from Dave Airlie:
 "This is the main pull request for the drm for 4.3.  Nouveau is
  probably the biggest amount of changes in here, since it missed 4.2.
  Highlights below, along with the usual bunch of fixes.

  All stuff outside drm should have applicable acks.

  Highlights:

   - new drivers:
        freescale dcu kms driver

   - core:
        more atomic fixes
        disable some dri1 interfaces on kms drivers
        drop fb panic handling, this was just getting more broken, as more locking was required.
        new core fbdev Kconfig support - instead of each driver enable/disabling it
        struct_mutex cleanups

   - panel:
        more new panels
        cleanup Kconfig

   - i915:
        Skylake support enabled by default
        legacy modesetting using atomic infrastructure
        Skylake fixes
        GEN9 workarounds

   - amdgpu:
        Fiji support
        CGS support for amdgpu
        Initial GPU scheduler - off by default
        Lots of bug fixes and optimisations.

   - radeon:
        DP fixes
        misc fixes

   - amdkfd:
        Add Carrizo support for amdkfd using amdgpu.

   - nouveau:
        long pending cleanup to complete driver,
        fully bisectable which makes it larger,
        perfmon work
        more reclocking improvements
        maxwell displayport fixes

   - vmwgfx:
        new DX device support, supports OpenGL 3.3
        screen targets support

   - mgag200:
        G200eW support
        G200e new revision support

   - msm:
        dragonboard 410c support, msm8x94 support, msm8x74v1 support
        yuv format support
        dma plane support
        mdp5 rotation
        initial hdcp

   - sti:
        atomic support

   - exynos:
        lots of cleanups
        atomic modesetting/pageflipping support
        render node support

   - tegra:
        tegra210 support (dc, dsi, dp/hdmi)
        dpms with atomic modesetting support

   - atmel:
        support for 3 more atmel SoCs
        new input formats, PRIME support.

   - dwhdmi:
        preparing to add audio support

   - rockchip:
        yuv plane support"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (1369 commits)
  drm/amdgpu: rename gmc_v8_0_init_compute_vmid
  drm/amdgpu: fix vce3 instance handling
  drm/amdgpu: remove ib test for the second VCE Ring
  drm/amdgpu: properly enable VM fault interrupts
  drm/amdgpu: fix warning in scheduler
  drm/amdgpu: fix buffer placement under memory pressure
  drm/amdgpu/cz: fix cz_dpm_update_low_memory_pstate logic
  drm/amdgpu: fix typo in dce11 watermark setup
  drm/amdgpu: fix typo in dce10 watermark setup
  drm/amdgpu: use top down allocation for non-CPU accessible vram
  drm/amdgpu: be explicit about cpu vram access for driver BOs (v2)
  drm/amdgpu: set MEC doorbell range for Fiji
  drm/amdgpu: implement burst NOP for SDMA
  drm/amdgpu: add insert_nop ring func and default implementation
  drm/amdgpu: add amdgpu_get_sdma_instance helper function
  drm/amdgpu: add AMDGPU_MAX_SDMA_INSTANCES
  drm/amdgpu: add burst_nop flag for sdma
  drm/amdgpu: add count field for the SDMA NOP packet v2
  drm/amdgpu: use PT for VM sync on unmap
  drm/amdgpu: make wait_event uninterruptible in push_job
  ...

ipmi:ssif: Add a module parm to specify that SMBus alerts don't work

2015-09-03T20:02:31+00:00

They are broken on some platforms, this gives people a chance to work
around it until the firmware is fixed.

Signed-off-by: Corey Minyard

ipmi: add of_device_id in MODULE_DEVICE_TABLE

2015-09-03T20:02:31+00:00

Fix autoloading ipmi modules when using device tree.

Signed-off-by: Brijesh Singh 

Moved this change up into the CONFIG_OF section to account
for changes to the probing code.

Signed-off-by: Corey Minyard

ipmi: Compensate for BMCs that wont set the irq enable bit

2015-09-03T20:02:30+00:00

It appears that some BMCs support interrupts but don't support setting
the irq enable bits.  The interrupts are just always on.  Sigh.
Add code to compensate.

The new code was very similar to another functions, so this also
factors out the common code into other functions.

Signed-off-by: Corey Minyard 
Tested-by: Henrik Korkuc