BMC/Intel-BMC/linux.git/drivers/char, branch dev-5.8

Merge tag 'v5.8.5' into dev-5.8

2020-08-31T00:46:57+00:00

This is the 5.8.5 stable release Signed-off-by: Joel Stanley

tpm: Unify the mismatching TPM space buffer sizes

2020-08-19T06:27:01+00:00

commit 6c4e79d99e6f42b79040f1a33cd4018f5425030b upstream. The size of the buffers for storing context's and sessions can vary from arch to arch as PAGE_SIZE can be anything between 4 kB and 256 kB (the maximum for PPC64). Define a fixed buffer size set to 16 kB. This should be enough for most use with three handles (that is how many we allow at the moment). Parametrize the buffer size while doing this, so that it is easier to revisit this later on if required. Cc: stable@vger.kernel.org Reported-by: Stefan Berger Fixes: 745b361e989a ("tpm: infrastructure for TPM spaces") Reviewed-by: Jerry Snitselaar Tested-by: Stefan Berger Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

agp/intel: Fix a memory leak on module initialisation failure

2020-08-19T06:26:23+00:00

[ Upstream commit b975abbd382fe442713a4c233549abb90e57c22b ] In intel_gtt_setup_scratch_page(), pointer "page" is not released if pci_dma_mapping_error() return an error, leading to a memory leak on module initialisation failure. Simply fix this issue by freeing "page" before return. Fixes: 0e87d2b06cb46 ("intel-gtt: initialize our own scratch page") Signed-off-by: Qiushi Wu Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20200522083451.7448-1-chris@chris-wilson.co.uk Signed-off-by: Sasha Levin

ipmi: aspeed-g6: Add compatible strings

2020-08-06T00:30:31+00:00

The AST2600 SoC contains the same IPMI (BT/KCS) devices as the AST2500. OpenBMC-Staging-Count: 4 Reviewed-by: Andrew Jeffery Signed-off-by: Brad Bishop Signed-off-by: Joel Stanley

/dev/mem: add a devmem kernel parameter to activate the device

2020-08-06T00:30:29+00:00

For security reasons, some configuration needs to run without /dev/mem but on some occasions, to debug HW for instance, it's still useful to be able to reboot the system with access to physical memory. Add a kernel parameter which activates the /dev/mem device only when 'mem.devmem' is enabled. OpenBMC-Staging-Count: 9 Signed-off-by: Cédric Le Goater Signed-off-by: Joel Stanley

random32: update the net random state on interrupt and activity

2020-07-29T17:35:37+00:00

This modifies the first 32 bits out of the 128 bits of a random CPU's net_rand_state on interrupt or CPU activity to complicate remote observations that could lead to guessing the network RNG's internal state. Note that depending on some network devices' interrupt rate moderation or binding, this re-seeding might happen on every packet or even almost never. In addition, with NOHZ some CPUs might not even get timer interrupts, leaving their local state rarely updated, while they are running networked processes making use of the random state. For this reason, we also perform this update in update_process_times() in order to at least update the state when there is user or system activity, since it's the only case we care about. Reported-by: Amit Klein Suggested-by: Linus Torvalds Cc: Eric Dumazet Cc: "Jason A. Donenfeld" Cc: Andy Lutomirski Cc: Kees Cook Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Signed-off-by: Willy Tarreau Signed-off-by: Linus Torvalds

/dev/mem: Add missing memory barriers for devmem_inode

2020-07-23T07:47:13+00:00

WRITE_ONCE() isn't the correct way to publish a pointer to a data structure, since it doesn't include a write memory barrier. Therefore other tasks may see that the pointer has been set but not see that the pointed-to memory has finished being initialized yet. Instead a primitive with "release" semantics is needed. Use smp_store_release() for this. The use of READ_ONCE() on the read side is still potentially correct if there's no control dependency, i.e. if all memory being "published" is transitively reachable via the pointer itself. But this pairing is somewhat confusing and error-prone. So just upgrade the read side to smp_load_acquire() so that it clearly pairs with smp_store_release(). Cc: Arnd Bergmann Cc: Ingo Molnar Cc: Kees Cook Cc: Matthew Wilcox Cc: Russell King Cc: Andrew Morton Fixes: 3234ac664a87 ("/dev/mem: Revoke mappings when a driver claims the region") Signed-off-by: Eric Biggers Cc: stable Acked-by: Dan Williams Link: https://lore.kernel.org/r/20200716060553.24618-1-ebiggers@kernel.org Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into master

2020-07-16T18:26:40+00:00

Pull char/misc fixes from Greg KH: "Here are number of small char/misc driver fixes for 5.8-rc6 Not that many complex fixes here, just a number of small fixes for reported issues, and some new device ids. Nothing fancy. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits) virtio: virtio_console: add missing MODULE_DEVICE_TABLE() for rproc serial intel_th: Fix a NULL dereference when hub driver is not loaded intel_th: pci: Add Emmitsburg PCH support intel_th: pci: Add Tiger Lake PCH-H support intel_th: pci: Add Jasper Lake CPU support virt: vbox: Fix guest capabilities mask check virt: vbox: Fix VBGL_IOCTL_VMMDEV_REQUEST_BIG and _LOG req numbers to match upstream uio_pdrv_genirq: fix use without device tree and no interrupt uio_pdrv_genirq: Remove warning when irq is not specified coresight: etmv4: Fix CPU power management setup in probe() function coresight: cti: Fix error handling in probe Revert "zram: convert remaining CLASS_ATTR() to CLASS_ATTR_RO()" mei: bus: don't clean driver pointer misc: atmel-ssc: lock with mutex instead of spinlock phy: sun4i-usb: fix dereference of pointer phy0 before it is null checked phy: rockchip: Fix return value of inno_dsidphy_probe() phy: ti: j721e-wiz: Constify structs phy: ti: am654-serdes: Constify regmap_config phy: intel: fix enum type mismatch warning phy: intel: Fix compilation error on FIELD_PREP usage ...

virtio: virtio_console: add missing MODULE_DEVICE_TABLE() for rproc serial

2020-07-10T13:12:48+00:00

rproc_serial_id_table lacks an exposure to module devicetable, so when remoteproc firmware requests VIRTIO_ID_RPROC_SERIAL, no uevent is generated and no module autoloading occurs. Add missing MODULE_DEVICE_TABLE() annotation and move the existing one for VIRTIO_ID_CONSOLE right to the table itself. Fixes: 1b6370463e88 ("virtio_console: Add support for remoteproc serial") Cc: # v3.8+ Signed-off-by: Alexander Lobakin Reviewed-by: Amit Shah Link: https://lore.kernel.org/r/x7C_CbeJtoGMy258nwAXASYz3xgFMFpyzmUvOyZzRnQrgWCREBjaqBOpAUS7ol4NnZYvSVwmTsCG0Ohyfvta-ygw6HMHcoeKK0C3QFiAO_Q=@pm.me Signed-off-by: Greg Kroah-Hartman

Revert commit e918e570415c ("tpm_tis: Remove the HID IFX0102")

2020-07-07T01:25:17+00:00

Removing IFX0102 from tpm_tis was not a right move because both tpm_tis and tpm_infineon use the same device ID. Revert the commit and add a remark about a bug caused by commit 93e1b7d42e1e ("[PATCH] tpm: add HID module parameter"). Fixes: e918e570415c ("tpm_tis: Remove the HID IFX0102") Reported-by: Peter Huewe Reviewed-by: Jerry Snitselaar Signed-off-by: Jarkko Sakkinen