mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 10:56:11 +07:00
00085f1efa
The dma-mapping core and the implementations do not change the DMA
attributes passed by pointer. Thus the pointer can point to const data.
However the attributes do not have to be a bitfield. Instead unsigned
long will do fine:
1. This is just simpler. Both in terms of reading the code and setting
attributes. Instead of initializing local attributes on the stack
and passing pointer to it to dma_set_attr(), just set the bits.
2. It brings safeness and checking for const correctness because the
attributes are passed by value.
Semantic patches for this change (at least most of them):
virtual patch
virtual context
@r@
identifier f, attrs;
@@
f(...,
- struct dma_attrs *attrs
+ unsigned long attrs
, ...)
{
...
}
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
and
// Options: --all-includes
virtual patch
virtual context
@r@
identifier f, attrs;
type t;
@@
t f(..., struct dma_attrs *attrs);
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Mark Salter <msalter@redhat.com> [c6x]
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris]
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm]
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp]
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core]
Acked-by: David Vrabel <david.vrabel@citrix.com> [xen]
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb]
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon]
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390]
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32]
Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc]
Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| .. | ||
| fpu | ||
| trace | ||
| airq.h | ||
| appldata.h | ||
| asm-offsets.h | ||
| atomic.h | ||
| barrier.h | ||
| bitops.h | ||
| bug.h | ||
| bugs.h | ||
| cache.h | ||
| cacheflush.h | ||
| ccwdev.h | ||
| ccwgroup.h | ||
| checksum.h | ||
| chpid.h | ||
| cio.h | ||
| clp.h | ||
| cmb.h | ||
| cmpxchg.h | ||
| compat.h | ||
| cpacf.h | ||
| cpcmd.h | ||
| cpu_mf.h | ||
| cpu.h | ||
| cpufeature.h | ||
| cputime.h | ||
| crw.h | ||
| css_chars.h | ||
| ctl_reg.h | ||
| current.h | ||
| debug.h | ||
| delay.h | ||
| device.h | ||
| diag.h | ||
| dis.h | ||
| div64.h | ||
| dma-mapping.h | ||
| dma.h | ||
| eadm.h | ||
| ebcdic.h | ||
| elf.h | ||
| emergency-restart.h | ||
| exec.h | ||
| extmem.h | ||
| facilities_src.h | ||
| facility.h | ||
| fb.h | ||
| fcx.h | ||
| ftrace.h | ||
| futex.h | ||
| gmap.h | ||
| hardirq.h | ||
| hugetlb.h | ||
| hw_irq.h | ||
| idals.h | ||
| idle.h | ||
| io.h | ||
| ipl.h | ||
| irq_regs.h | ||
| irq.h | ||
| irqflags.h | ||
| isc.h | ||
| itcw.h | ||
| jump_label.h | ||
| Kbuild | ||
| kdebug.h | ||
| kexec.h | ||
| kmap_types.h | ||
| kprobes.h | ||
| kvm_host.h | ||
| kvm_para.h | ||
| linkage.h | ||
| livepatch.h | ||
| local64.h | ||
| local.h | ||
| lowcore.h | ||
| mman.h | ||
| mmu_context.h | ||
| mmu.h | ||
| mmzone.h | ||
| module.h | ||
| mutex.h | ||
| nmi.h | ||
| numa.h | ||
| os_info.h | ||
| page.h | ||
| pci_clp.h | ||
| pci_debug.h | ||
| pci_dma.h | ||
| pci_insn.h | ||
| pci_io.h | ||
| pci.h | ||
| percpu.h | ||
| perf_event.h | ||
| pgalloc.h | ||
| pgtable.h | ||
| processor.h | ||
| ptrace.h | ||
| qdio.h | ||
| reset.h | ||
| runtime_instr.h | ||
| rwsem.h | ||
| schid.h | ||
| sclp.h | ||
| scsw.h | ||
| seccomp.h | ||
| sections.h | ||
| segment.h | ||
| serial.h | ||
| setup.h | ||
| shmparam.h | ||
| signal.h | ||
| sigp.h | ||
| smp.h | ||
| sparsemem.h | ||
| spinlock_types.h | ||
| spinlock.h | ||
| stp.h | ||
| string.h | ||
| switch_to.h | ||
| syscall.h | ||
| sysinfo.h | ||
| termios.h | ||
| thread_info.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| topology.h | ||
| types.h | ||
| uaccess.h | ||
| unaligned.h | ||
| unistd.h | ||
| uprobes.h | ||
| user.h | ||
| vdso.h | ||
| vga.h | ||
| vtime.h | ||
| vtimer.h | ||
| vx-insn.h | ||
| xor.h | ||