kernel/drivers/misc/cxl, branch linux-5.1.y

Merge branch 'topic/dma' into next

2019-02-21T12:15:10Z

Merge hch's big DMA rework series. This is in a topic branch in case he wants to merge it to minimise conflicts.

powerpc/dma: remove set_dma_offset

2019-02-18T11:41:04Z

There is no good reason for this helper, just opencode it. Signed-off-by: Christoph Hellwig Tested-by: Christian Zigotzky Signed-off-by: Michael Ellerman

powerpc/dma: use the generic direct mapping bypass

2019-02-18T11:41:04Z

Now that we've switched all the powerpc nommu and swiotlb methods to use the generic dma_direct_* calls we can remove these ops vectors entirely and rely on the common direct mapping bypass that avoids indirect function calls entirely. This also allows to remove a whole lot of boilerplate code related to setting up these operations. Signed-off-by: Christoph Hellwig Tested-by: Christian Zigotzky Signed-off-by: Michael Ellerman

cxl: Wrap iterations over afu slices inside 'afu_list_lock'

2019-01-30T12:36:53Z

Within cxl module, iteration over array 'adapter->afu' may be racy at few points as it might be simultaneously read during an EEH and its contents being set to NULL while driver is being unloaded or unbound from the adapter. This might result in a NULL pointer to 'struct afu' being de-referenced during an EEH thereby causing a kernel oops. This patch fixes this by making sure that all access to the array 'adapter->afu' is wrapped within the context of spin-lock 'adapter->afu_list_lock'. Fixes: 9e8df8a21963 ("cxl: EEH support") Cc: stable@vger.kernel.org # v4.3+ Acked-by: Andrew Donnellan Acked-by: Frederic Barrat Acked-by: Christophe Lombard Signed-off-by: Vaibhav Jain Signed-off-by: Michael Ellerman

cxl: drop the dma_set_mask callback from vphb

2018-12-20T11:21:20Z

The CXL code never even looks at the dma mask, so there is no good reason for this sanity check. Remove it because it gets in the way of the dma ops refactoring. Signed-off-by: Christoph Hellwig Acked-by: Andrew Donnellan Signed-off-by: Michael Ellerman

cxl: Use device_type helpers to access the node type

2018-11-26T11:33:37Z

Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Signed-off-by: Rob Herring Acked-by: Andrew Donnellan Signed-off-by: Michael Ellerman

misc: cxl: Fix possible null pointer dereference

2018-10-11T10:15:03Z

It is not safe to dereference an object before a null test. It is not needed and just remove them. Ftrace can be used instead. Signed-off-by: zhong jiang Acked-by: Andrew Donnellan Acked-by: Frederic Barrat Signed-off-by: Greg Kroah-Hartman

misc: Convert to using %pOFn instead of device_node.name

2018-09-14T13:25:57Z

In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Cc: Frederic Barrat Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring Acked-by: Andrew Donnellan Signed-off-by: Greg Kroah-Hartman

Merge branch 'akpm' (patches from Andrew)

2018-08-17T23:49:31Z

Merge updates from Andrew Morton: - a few misc things - a few Y2038 fixes - ntfs fixes - arch/sh tweaks - ocfs2 updates - most of MM * emailed patches from Andrew Morton : (111 commits) mm/hmm.c: remove unused variables align_start and align_end fs/userfaultfd.c: remove redundant pointer uwq mm, vmacache: hash addresses based on pmd mm/list_lru: introduce list_lru_shrink_walk_irq() mm/list_lru.c: pass struct list_lru_node* as an argument to __list_lru_walk_one() mm/list_lru.c: move locking from __list_lru_walk_one() to its caller mm/list_lru.c: use list_lru_walk_one() in list_lru_walk_node() mm, swap: make CONFIG_THP_SWAP depend on CONFIG_SWAP mm/sparse: delete old sparse_init and enable new one mm/sparse: add new sparse_init_nid() and sparse_init() mm/sparse: move buffer init/fini to the common place mm/sparse: use the new sparse buffer functions in non-vmemmap mm/sparse: abstract sparse buffer allocations mm/hugetlb.c: don't zero 1GiB bootmem pages mm, page_alloc: double zone's batchsize mm/oom_kill.c: document oom_lock mm/hugetlb: remove gigantic page support for HIGHMEM mm, oom: remove sleep from under oom_lock kernel/dma: remove unsupported gfp_mask parameter from dma_alloc_from_contiguous() mm/cma: remove unsupported gfp_mask parameter from cma_alloc() ...

mm: convert return type of handle_mm_fault() caller to vm_fault_t

2018-08-17T23:20:28Z

Use new return type vm_fault_t for fault handler. For now, this is just documenting that the function returns a VM_FAULT value rather than an errno. Once all instances are converted, vm_fault_t will become a distinct type. Ref-> commit 1c8f422059ae ("mm: change return type to vm_fault_t") In this patch all the caller of handle_mm_fault() are changed to return vm_fault_t type. Link: http://lkml.kernel.org/r/20180617084810.GA6730@jordon-HP-15-Notebook-PC Signed-off-by: Souptick Joarder Cc: Matthew Wilcox Cc: Richard Henderson Cc: Tony Luck Cc: Matt Turner Cc: Vineet Gupta Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Richard Kuo Cc: Geert Uytterhoeven Cc: Michal Simek Cc: James Hogan Cc: Ley Foon Tan Cc: Jonas Bonn Cc: James E.J. Bottomley Cc: Benjamin Herrenschmidt Cc: Palmer Dabbelt Cc: Yoshinori Sato Cc: David S. Miller Cc: Richard Weinberger Cc: Guan Xuetao Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: "Levin, Alexander (Sasha Levin)" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds