Commit b77afad8 authored by Mike Rapoport's avatar Mike Rapoport Committed by Michael Ellerman
Browse files

powerpc/32: drop unused ISA_DMA_THRESHOLD 



The ISA_DMA_THRESHOLD variable is set by several platforms but never
referenced.
Remove it.

Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191125092033.20014-1-rppt@kernel.org
parent 32377bd2

arch/powerpc/include/asm/dma.h

+1 −2
Original line number Diff line number Diff line
@@ -151,10 +151,9 @@ 
#define DMA2_EXT_REG		0x4D6



#ifndef __powerpc64__

    /* in arch/ppc/kernel/setup.c -- Cort */

    /* in arch/powerpc/kernel/setup_32.c -- Cort */

    extern unsigned int DMA_MODE_WRITE;

    extern unsigned int DMA_MODE_READ;

    extern unsigned long ISA_DMA_THRESHOLD;

#else

    #define DMA_MODE_READ	0x44	/* I/O to memory, no autoinit, increment, single mode */

    #define DMA_MODE_WRITE	0x48	/* memory to I/O, no autoinit, increment, single mode */

arch/powerpc/kernel/setup_32.c

+0 −1
Original line number Diff line number Diff line
@@ -58,7 +58,6 @@ EXPORT_SYMBOL_GPL(boot_cpuid_phys); 
int smp_hw_index[NR_CPUS];

EXPORT_SYMBOL(smp_hw_index);



unsigned long ISA_DMA_THRESHOLD;

unsigned int DMA_MODE_READ;

unsigned int DMA_MODE_WRITE;

arch/powerpc/platforms/44x/warp.c

+0 −3
Original line number Diff line number Diff line
@@ -43,9 +43,6 @@ static int __init warp_probe(void) 
	if (!of_machine_is_compatible("pika,warp"))

		return 0;



	/* For arch_dma_alloc */

	ISA_DMA_THRESHOLD = ~0L;



	return 1;

}

arch/powerpc/platforms/52xx/efika.c

+0 −1
Original line number Diff line number Diff line
@@ -205,7 +205,6 @@ static int __init efika_probe(void) 
	if (strcmp(model, "EFIKA5K2"))

		return 0;



	ISA_DMA_THRESHOLD = ~0L;

	DMA_MODE_READ = 0x44;

	DMA_MODE_WRITE = 0x48;

arch/powerpc/platforms/amigaone/setup.c

+0 −1
Original line number Diff line number Diff line
@@ -146,7 +146,6 @@ static int __init amigaone_probe(void) 
		 */

		cur_cpu_spec->cpu_features &= ~CPU_FTR_NEED_COHERENT;



		ISA_DMA_THRESHOLD = 0x00ffffff;

		DMA_MODE_READ = 0x44;

		DMA_MODE_WRITE = 0x48;

CRA Git | Maintained and supported by SUSTech CRA and CCSE