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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-10-05 21:42:36 +0200
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-10-05 21:43:53 +0200
commit9fce0c226536fc36c7fb0a80000ca38a995be43e (patch)
treed1d03d4a831bb143ffd401cefa0f44f636ac0084 /drivers/base/regmap/regcache.c
parent[media] ttusb_dec: avoid the risk of go past buffer (diff)
parentLinux 4.8 (diff)
downloadlinux-9fce0c226536fc36c7fb0a80000ca38a995be43e.tar.xz
linux-9fce0c226536fc36c7fb0a80000ca38a995be43e.zip
Merge tag 'v4.8' into patchwork
Linux 4.8 * tag 'v4.8': (1761 commits) Linux 4.8 ARM: 8618/1: decompressor: reset ttbcr fields to use TTBR0 on ARMv7 MIPS: CM: Fix mips_cm_max_vp_width for non-MT kernels on MT systems include/linux/property.h: fix typo/compile error ocfs2: fix deadlock on mmapped page in ocfs2_write_begin_nolock() mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page() MAINTAINERS: Switch to kernel.org email address for Javi Merino x86/entry/64: Fix context tracking state warning when load_gs_index fails x86/boot: Initialize FPU and X86_FEATURE_ALWAYS even if we don't have CPUID x86/vdso: Fix building on big endian host x86/boot: Fix another __read_cr4() case on 486 sctp: fix the issue sctp_diag uses lock_sock in rcu_read_lock sctp: change to check peer prsctp_capable when using prsctp polices sctp: remove prsctp_param from sctp_chunk sctp: move sent_count to the memory hole in sctp_chunk tg3: Avoid NULL pointer dereference in tg3_io_error_detected() x86/init: Fix cr4_init_shadow() on CR4-less machines MIPS: Fix detection of unsupported highmem with cache aliases MIPS: Malta: Fix IOCU disable switch read for MIPS64 MIPS: Fix BUILD_ROLLBACK_PROLOGUE for microMIPS ...
Diffstat (limited to 'drivers/base/regmap/regcache.c')
-rw-r--r--drivers/base/regmap/regcache.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index df7ff7290821..4e582561e1e7 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -38,10 +38,11 @@ static int regcache_hw_init(struct regmap *map)
/* calculate the size of reg_defaults */
for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++)
- if (!regmap_volatile(map, i * map->reg_stride))
+ if (regmap_readable(map, i * map->reg_stride) &&
+ !regmap_volatile(map, i * map->reg_stride))
count++;
- /* all registers are volatile, so just bypass */
+ /* all registers are unreadable or volatile, so just bypass */
if (!count) {
map->cache_bypass = true;
return 0;