lkml.org 
[lkml]   [2019]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.20 351/352] cacheinfo: Keep the old value if of_property_read_u32 fails
Date
4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Huacai Chen <chenhc@lemote.com>

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>

---
drivers/base/cacheinfo.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -79,8 +79,7 @@ static void cache_size(struct cacheinfo
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 cachein
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)

\
 
 \ /
  Last update: 2019-02-11 15:38    [W:0.865 / U:5.644 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site