From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon, 30 Sep 2019 17:16:17 +0000 (-0700)
Subject: Merge tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux
X-Git-Tag: microblaze-v5.5-rc1~31
X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=commitdiff_plain;h=80b29b6b8cd7479a67f5e338195dbc121b30c879

Merge tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux

Pull csky updates from Guo Ren:
 "This round of csky subsystem just some fixups:

   - Fix mb() synchronization problem

   - Fix dma_alloc_coherent with PAGE_SO attribute

   - Fix cache_op failed when cross memory ZONEs

   - Optimize arch_sync_dma_for_cpu/device with dma_inv_range

   - Fix ioremap function losing

   - Fix arch_get_unmapped_area() implementation

   - Fix defer cache flush for 610

   - Support kernel non-aligned access

   - Fix 610 vipt cache flush mechanism

   - Fix add zero_fp fixup perf backtrace panic

   - Move static keyword to the front of declaration

   - Fix csky_pmu.max_period assignment

   - Use generic free_initrd_mem()

   - entry: Remove unneeded need_resched() loop"

* tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux:
  csky: Move static keyword to the front of declaration
  csky: entry: Remove unneeded need_resched() loop
  csky: Fixup csky_pmu.max_period assignment
  csky: Fixup add zero_fp fixup perf backtrace panic
  csky: Use generic free_initrd_mem()
  csky: Fixup 610 vipt cache flush mechanism
  csky: Support kernel non-aligned access
  csky: Fixup defer cache flush for 610
  csky: Fixup arch_get_unmapped_area() implementation
  csky: Fixup ioremap function losing
  csky: Optimize arch_sync_dma_for_cpu/device with dma_inv_range
  csky/dma: Fixup cache_op failed when cross memory ZONEs
  csky: Fixup dma_alloc_coherent with PAGE_SO attribute
  csky: Fixup mb() synchronization problem
---

80b29b6b8cd7479a67f5e338195dbc121b30c879
diff --cc arch/csky/mm/dma-mapping.c
index 602a60d47a94,106ef02a8f89..06e85b565454
--- a/arch/csky/mm/dma-mapping.c
+++ b/arch/csky/mm/dma-mapping.c
@@@ -14,33 -14,12 +14,6 @@@
  #include <linux/version.h>
  #include <asm/cache.h>
  
- void arch_dma_prep_coherent(struct page *page, size_t size)
 -static int __init atomic_pool_init(void)
--{
- 	if (PageHighMem(page)) {
- 		unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
- 
- 		do {
- 			void *ptr = kmap_atomic(page);
- 			size_t _size = (size < PAGE_SIZE) ? size : PAGE_SIZE;
- 
- 			memset(ptr, 0, _size);
- 			dma_wbinv_range((unsigned long)ptr,
- 					(unsigned long)ptr + _size);
- 
- 			kunmap_atomic(ptr);
- 
- 			page++;
- 			size -= PAGE_SIZE;
- 			count--;
- 		} while (count);
- 	} else {
- 		void *ptr = page_address(page);
- 
- 		memset(ptr, 0, size);
- 		dma_wbinv_range((unsigned long)ptr, (unsigned long)ptr + size);
- 	}
 -	return dma_atomic_pool_init(GFP_KERNEL, pgprot_noncached(PAGE_KERNEL));
--}
 -postcore_initcall(atomic_pool_init);
--
  static inline void cache_op(phys_addr_t paddr, size_t size,
  			    void (*fn)(unsigned long start, unsigned long end))
  {