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author | Huacai Chen <chenhc@lemote.com> | 2018-12-19 16:16:03 +0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 19:47:26 +0100 |
commit | 29706d59abdfe03040ce33ec6cd325b5eb60b217 (patch) | |
tree | 9c1700ef1a34dad100f91b1fd8d7bff1f7ed171b /drivers/base | |
parent | c287265bfa65deff9f3af30f048efa87030bb425 (diff) | |
download | linux-stable-29706d59abdfe03040ce33ec6cd325b5eb60b217.tar.gz linux-stable-29706d59abdfe03040ce33ec6cd325b5eb60b217.tar.bz2 linux-stable-29706d59abdfe03040ce33ec6cd325b5eb60b217.zip |
cacheinfo: Keep the old value if of_property_read_u32 fails
commit 3a34c986324c07dde32903f7bb262e6138e77c2a upstream.
Commit 448a5a552f336bd7b847b1951 ("drivers: base: cacheinfo: use OF
property_read_u32 instead of get_property,read_number") makes cache
size and number_of_sets be 0 if DT doesn't provide there values. I
think this is unreasonable so make them keep the old values, which is
the same as old kernels.
Fixes: 448a5a552f33 ("drivers: base: cacheinfo: use OF property_read_u32 instead of get_property,read_number")
Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r-- | drivers/base/cacheinfo.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c index 5d5b5988e88b..dd6a6850cb45 100644 --- a/drivers/base/cacheinfo.c +++ b/drivers/base/cacheinfo.c @@ -79,8 +79,7 @@ static void cache_size(struct cacheinfo *this_leaf, struct device_node *np) ct_idx = get_cacheinfo_idx(this_leaf->type); propname = cache_type_info[ct_idx].size_prop; - if (of_property_read_u32(np, propname, &this_leaf->size)) - this_leaf->size = 0; + of_property_read_u32(np, propname, &this_leaf->size); } /* not cache_line_size() because that's a macro in include/linux/cache.h */ @@ -114,8 +113,7 @@ static void cache_nr_sets(struct cacheinfo *this_leaf, struct device_node *np) ct_idx = get_cacheinfo_idx(this_leaf->type); propname = cache_type_info[ct_idx].nr_sets_prop; - if (of_property_read_u32(np, propname, &this_leaf->number_of_sets)) - this_leaf->number_of_sets = 0; + of_property_read_u32(np, propname, &this_leaf->number_of_sets); } static void cache_associativity(struct cacheinfo *this_leaf) |