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13 June 2022, 11:31:42 UTC
Revision 98a226ed21949601b270f7ea20abc9f72f7b0be9 authored by Takashi Iwai on 10 June 2015, 08:27:00 UTC, committed by Takashi Iwai on 10 June 2015, 08:31:10 UTC 
ALSA: hda - Don't actually write registers for caps overwrites
 
Along with the transition to regmap for managing the cached parameter
reads, the caps overwrite was also moved to regmap cache.  The cache
change itself works, but it still tries to write the non-existing verb
(the HDA parameter is read-only) wrongly.  It's harmless in most
cases, but some chips are picky and may result in the codec
communication stall.

This patch avoids it just by adding the missing flag check in
reg_write ops.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent 132bd96
Raw File
Tip revision: 98a226ed21949601b270f7ea20abc9f72f7b0be9 authored by Takashi Iwai on 10 June 2015, 08:27:00 UTC
ALSA: hda - Don't actually write registers for caps overwrites
Tip revision: 98a226e
vm_event_item.h 
#ifndef VM_EVENT_ITEM_H_INCLUDED
#define VM_EVENT_ITEM_H_INCLUDED

#ifdef CONFIG_ZONE_DMA
#define DMA_ZONE(xx) xx##_DMA,
#else
#define DMA_ZONE(xx)
#endif

#ifdef CONFIG_ZONE_DMA32
#define DMA32_ZONE(xx) xx##_DMA32,
#else
#define DMA32_ZONE(xx)
#endif

#ifdef CONFIG_HIGHMEM
#define HIGHMEM_ZONE(xx) , xx##_HIGH
#else
#define HIGHMEM_ZONE(xx)
#endif

#define FOR_ALL_ZONES(xx) DMA_ZONE(xx) DMA32_ZONE(xx) xx##_NORMAL HIGHMEM_ZONE(xx) , xx##_MOVABLE

enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
		FOR_ALL_ZONES(PGALLOC),
		PGFREE, PGACTIVATE, PGDEACTIVATE,
		PGFAULT, PGMAJFAULT,
		FOR_ALL_ZONES(PGREFILL),
		FOR_ALL_ZONES(PGSTEAL_KSWAPD),
		FOR_ALL_ZONES(PGSTEAL_DIRECT),
		FOR_ALL_ZONES(PGSCAN_KSWAPD),
		FOR_ALL_ZONES(PGSCAN_DIRECT),
		PGSCAN_DIRECT_THROTTLE,
#ifdef CONFIG_NUMA
		PGSCAN_ZONE_RECLAIM_FAILED,
#endif
		PGINODESTEAL, SLABS_SCANNED, KSWAPD_INODESTEAL,
		KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY,
		PAGEOUTRUN, ALLOCSTALL, PGROTATED,
		DROP_PAGECACHE, DROP_SLAB,
#ifdef CONFIG_NUMA_BALANCING
		NUMA_PTE_UPDATES,
		NUMA_HUGE_PTE_UPDATES,
		NUMA_HINT_FAULTS,
		NUMA_HINT_FAULTS_LOCAL,
		NUMA_PAGE_MIGRATE,
#endif
#ifdef CONFIG_MIGRATION
		PGMIGRATE_SUCCESS, PGMIGRATE_FAIL,
#endif
#ifdef CONFIG_COMPACTION
		COMPACTMIGRATE_SCANNED, COMPACTFREE_SCANNED,
		COMPACTISOLATED,
		COMPACTSTALL, COMPACTFAIL, COMPACTSUCCESS,
#endif
#ifdef CONFIG_HUGETLB_PAGE
		HTLB_BUDDY_PGALLOC, HTLB_BUDDY_PGALLOC_FAIL,
#endif
		UNEVICTABLE_PGCULLED,	/* culled to noreclaim list */
		UNEVICTABLE_PGSCANNED,	/* scanned for reclaimability */
		UNEVICTABLE_PGRESCUED,	/* rescued from noreclaim list */
		UNEVICTABLE_PGMLOCKED,
		UNEVICTABLE_PGMUNLOCKED,
		UNEVICTABLE_PGCLEARED,	/* on COW, page truncate */
		UNEVICTABLE_PGSTRANDED,	/* unable to isolate on unlock */
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
		THP_FAULT_ALLOC,
		THP_FAULT_FALLBACK,
		THP_COLLAPSE_ALLOC,
		THP_COLLAPSE_ALLOC_FAILED,
		THP_SPLIT,
		THP_ZERO_PAGE_ALLOC,
		THP_ZERO_PAGE_ALLOC_FAILED,
#endif
#ifdef CONFIG_MEMORY_BALLOON
		BALLOON_INFLATE,
		BALLOON_DEFLATE,
#ifdef CONFIG_BALLOON_COMPACTION
		BALLOON_MIGRATE,
#endif
#endif
#ifdef CONFIG_DEBUG_TLBFLUSH
#ifdef CONFIG_SMP
		NR_TLB_REMOTE_FLUSH,	/* cpu tried to flush others' tlbs */
		NR_TLB_REMOTE_FLUSH_RECEIVED,/* cpu received ipi for flush */
#endif /* CONFIG_SMP */
		NR_TLB_LOCAL_FLUSH_ALL,
		NR_TLB_LOCAL_FLUSH_ONE,
#endif /* CONFIG_DEBUG_TLBFLUSH */
#ifdef CONFIG_DEBUG_VM_VMACACHE
		VMACACHE_FIND_CALLS,
		VMACACHE_FIND_HITS,
		VMACACHE_FULL_FLUSHES,
#endif
		NR_VM_EVENT_ITEMS
};

#endif		/* VM_EVENT_ITEM_H_INCLUDED */
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