Commit bf23aba1 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'mips_fixes_5.0_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux 

Pull MIPS fixes from Paul Burton:
 "A few more MIPS fixes:

   - Fix 16b cmpxchg() operations which could erroneously fail if bits
     15:8 of the old value are non-zero. In practice I'm not aware of
     any actual users of 16b cmpxchg() on MIPS, but this fixes the
     support for it was was introduced in v4.13.

   - Provide a struct device to dma_alloc_coherent for Lantiq XWAY
     systems with a "Voice MIPS Macro Core" (VMMC) device.

   - Provide DMA masks for BCM63xx ethernet devices, fixing a regression
     introduced in v4.19.

   - Fix memblock reservation for the kernel when the system has a
     non-zero PHYS_OFFSET, correcting the memblock conversion performed
     in v4.20"

* tag 'mips_fixes_5.0_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: fix memory setup for platforms with PHYS_OFFSET != 0
  MIPS: BCM63XX: provide DMA masks for ethernet devices
  MIPS: lantiq: pass struct device to DMA API functions
  MIPS: fix truncation in __cmpxchg_small for short values
parents 3eb07d20 e0bf304e

arch/mips/bcm63xx/dev-enet.c

+8 −0
Original line number Diff line number Diff line
@@ -70,6 +70,8 @@ static struct platform_device bcm63xx_enet_shared_device = { 


static int shared_device_registered;



static u64 enet_dmamask = DMA_BIT_MASK(32);



static struct resource enet0_res[] = {

	{

		.start		= -1, /* filled at runtime */
@@ -99,6 +101,8 @@ static struct platform_device bcm63xx_enet0_device = { 
	.resource	= enet0_res,

	.dev		= {

		.platform_data = &enet0_pd,

		.dma_mask = &enet_dmamask,

		.coherent_dma_mask = DMA_BIT_MASK(32),

	},

};
@@ -131,6 +135,8 @@ static struct platform_device bcm63xx_enet1_device = { 
	.resource	= enet1_res,

	.dev		= {

		.platform_data = &enet1_pd,

		.dma_mask = &enet_dmamask,

		.coherent_dma_mask = DMA_BIT_MASK(32),

	},

};
@@ -157,6 +163,8 @@ static struct platform_device bcm63xx_enetsw_device = { 
	.resource	= enetsw_res,

	.dev		= {

		.platform_data = &enetsw_pd,

		.dma_mask = &enet_dmamask,

		.coherent_dma_mask = DMA_BIT_MASK(32),

	},

};

arch/mips/kernel/cmpxchg.c

+1 −2
Original line number Diff line number Diff line
@@ -54,10 +54,9 @@ unsigned long __xchg_small(volatile void *ptr, unsigned long val, unsigned int s 
unsigned long __cmpxchg_small(volatile void *ptr, unsigned long old,

			      unsigned long new, unsigned int size)

{

	u32 mask, old32, new32, load32;

	u32 mask, old32, new32, load32, load;

	volatile u32 *ptr32;

	unsigned int shift;

	u8 load;



	/* Check that ptr is naturally aligned */

	WARN_ON((unsigned long)ptr & (size - 1));

arch/mips/kernel/setup.c

+2 −1
Original line number Diff line number Diff line
@@ -384,7 +384,8 @@ static void __init bootmem_init(void) 
	init_initrd();

	reserved_end = (unsigned long) PFN_UP(__pa_symbol(&_end));



	memblock_reserve(PHYS_OFFSET, reserved_end << PAGE_SHIFT);

	memblock_reserve(PHYS_OFFSET,

			 (reserved_end << PAGE_SHIFT) - PHYS_OFFSET);



	/*

	 * max_low_pfn is not a number of pages. The number of pages

arch/mips/lantiq/xway/vmmc.c

+2 −2
Original line number Diff line number Diff line
@@ -31,8 +31,8 @@ static int vmmc_probe(struct platform_device *pdev) 
	dma_addr_t dma;



	cp1_base =

		(void *) CPHYSADDR(dma_alloc_coherent(NULL, CP1_SIZE,

						    &dma, GFP_ATOMIC));

		(void *) CPHYSADDR(dma_alloc_coherent(&pdev->dev, CP1_SIZE,

						    &dma, GFP_KERNEL));



	gpio_count = of_gpio_count(pdev->dev.of_node);

	while (gpio_count > 0) {

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