mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
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>
|
||
|---|---|---|
| .. | ||
| adc.h | ||
| addrspace.h | ||
| alignment.h | ||
| asm-offsets.h | ||
| atomic-grb.h | ||
| atomic-irq.h | ||
| atomic-llsc.h | ||
| atomic.h | ||
| barrier.h | ||
| bitops-grb.h | ||
| bitops-llsc.h | ||
| bitops-op32.h | ||
| bitops.h | ||
| bl_bit.h | ||
| bl_bit_32.h | ||
| bl_bit_64.h | ||
| bug.h | ||
| bugs.h | ||
| cache.h | ||
| cache_insns.h | ||
| cache_insns_32.h | ||
| cache_insns_64.h | ||
| cacheflush.h | ||
| checksum.h | ||
| checksum_32.h | ||
| clock.h | ||
| cmpxchg-grb.h | ||
| cmpxchg-irq.h | ||
| cmpxchg-llsc.h | ||
| cmpxchg-xchg.h | ||
| cmpxchg.h | ||
| device.h | ||
| dma-mapping.h | ||
| dma-register.h | ||
| dma.h | ||
| dmabrg.h | ||
| dwarf.h | ||
| elf.h | ||
| entry-macros.S | ||
| fb.h | ||
| fixmap.h | ||
| flat.h | ||
| fpu.h | ||
| freq.h | ||
| ftrace.h | ||
| futex-irq.h | ||
| futex.h | ||
| gpio.h | ||
| hardirq.h | ||
| hd64461.h | ||
| heartbeat.h | ||
| hugetlb.h | ||
| hw_breakpoint.h | ||
| hw_irq.h | ||
| i2c-sh7760.h | ||
| io.h | ||
| io_generic.h | ||
| io_noioport.h | ||
| io_trapped.h | ||
| irq.h | ||
| irqflags.h | ||
| Kbuild | ||
| kdebug.h | ||
| kexec.h | ||
| kgdb.h | ||
| kmap_types.h | ||
| kprobes.h | ||
| linkage.h | ||
| machvec.h | ||
| mc146818rtc.h | ||
| mmu.h | ||
| mmu_context.h | ||
| mmu_context_32.h | ||
| mmu_context_64.h | ||
| mmzone.h | ||
| module.h | ||
| mutex-llsc.h | ||
| mutex.h | ||
| page.h | ||
| pci.h | ||
| perf_event.h | ||
| pgalloc.h | ||
| pgtable-2level.h | ||
| pgtable-3level.h | ||
| pgtable.h | ||
| pgtable_32.h | ||
| pgtable_64.h | ||
| posix_types.h | ||
| processor.h | ||
| processor_32.h | ||
| processor_64.h | ||
| ptrace.h | ||
| ptrace_32.h | ||
| ptrace_64.h | ||
| push-switch.h | ||
| reboot.h | ||
| romimage-macros.h | ||
| rtc.h | ||
| seccomp.h | ||
| sections.h | ||
| segment.h | ||
| setup.h | ||
| sfp-machine.h | ||
| sh7760fb.h | ||
| sh_bios.h | ||
| shmparam.h | ||
| siu.h | ||
| smc37c93x.h | ||
| smp-ops.h | ||
| smp.h | ||
| sparsemem.h | ||
| spi.h | ||
| spinlock.h | ||
| spinlock_types.h | ||
| sram.h | ||
| stackprotector.h | ||
| stacktrace.h | ||
| string.h | ||
| string_32.h | ||
| string_64.h | ||
| suspend.h | ||
| switch_to.h | ||
| switch_to_32.h | ||
| switch_to_64.h | ||
| syscall.h | ||
| syscall_32.h | ||
| syscall_64.h | ||
| syscalls.h | ||
| syscalls_32.h | ||
| syscalls_64.h | ||
| thread_info.h | ||
| timex.h | ||
| tlb.h | ||
| tlb_64.h | ||
| tlbflush.h | ||
| topology.h | ||
| traps.h | ||
| traps_32.h | ||
| traps_64.h | ||
| types.h | ||
| uaccess.h | ||
| uaccess_32.h | ||
| uaccess_64.h | ||
| unaligned-sh4a.h | ||
| unaligned.h | ||
| uncached.h | ||
| unistd.h | ||
| unwinder.h | ||
| user.h | ||
| vga.h | ||
| vmlinux.lds.h | ||
| watchdog.h | ||
| word-at-a-time.h | ||