* [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails
@ 2018-12-19 8:16 Huacai Chen
2019-01-22 0:51 ` Huacai Chen
2019-01-22 12:51 ` Greg Kroah-Hartman
0 siblings, 2 replies; 4+ messages in thread
From: Huacai Chen @ 2018-12-19 8:16 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Rafael J . Wysocki, Sudeep Holla, linux-kernel, Fuxin Zhang,
Zhangjin Wu, Huacai Chen, Huacai Chen, stable
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>
---
V2: Add Cc and Reviewed-by
V3: Add ChangeLog
drivers/base/cacheinfo.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index cf78fa6..a735953 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)
--
2.7.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails
2018-12-19 8:16 [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails Huacai Chen
@ 2019-01-22 0:51 ` Huacai Chen
2019-01-22 10:30 ` Sudeep Holla
2019-01-22 12:51 ` Greg Kroah-Hartman
1 sibling, 1 reply; 4+ messages in thread
From: Huacai Chen @ 2019-01-22 0:51 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Rafael J . Wysocki, Sudeep Holla, LKML, Fuxin Zhang, Zhangjin Wu, stable
Ping?
On Wed, Dec 19, 2018 at 4:15 PM Huacai Chen <chenhc@lemote.com> wrote:
>
> 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>
> ---
> V2: Add Cc and Reviewed-by
> V3: Add ChangeLog
>
> drivers/base/cacheinfo.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
> index cf78fa6..a735953 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)
> --
> 2.7.0
>
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails
2019-01-22 0:51 ` Huacai Chen
@ 2019-01-22 10:30 ` Sudeep Holla
0 siblings, 0 replies; 4+ messages in thread
From: Sudeep Holla @ 2019-01-22 10:30 UTC (permalink / raw)
To: chenhuacai, gregkh
Cc: Sudeep.Holla, rafael, linux-kernel, zhangfx, wuzhangjin, stable
On 22/01/2019 00:51, Huacai Chen wrote:
> Ping?
>
> On Wed, Dec 19, 2018 at 4:15 PM Huacai Chen <chenhc@lemote.com> wrote:
>>
>> 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>
Looks like this slipped through the cracks during holiday period.
Wait until Greg responds for a week, if not please repost as it may be
difficult to dig out old emails especially the ones during holidays.
--
Regards,
Sudeep
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails
2018-12-19 8:16 [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails Huacai Chen
2019-01-22 0:51 ` Huacai Chen
@ 2019-01-22 12:51 ` Greg Kroah-Hartman
1 sibling, 0 replies; 4+ messages in thread
From: Greg Kroah-Hartman @ 2019-01-22 12:51 UTC (permalink / raw)
To: Huacai Chen
Cc: Rafael J . Wysocki, Sudeep Holla, linux-kernel, Fuxin Zhang,
Zhangjin Wu, Huacai Chen, stable
On Wed, Dec 19, 2018 at 04:16:03PM +0800, Huacai Chen wrote:
> 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>
> ---
> V2: Add Cc and Reviewed-by
> V3: Add ChangeLog
Sorry for the delay, now queued up.
greg k-h
^ permalink raw reply [flat|nested] 4+ messages in thread
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2018-12-19 8:16 [PATCH V3] cacheinfo: Keep the old value if of_property_read_u32 fails Huacai Chen
2019-01-22 0:51 ` Huacai Chen
2019-01-22 10:30 ` Sudeep Holla
2019-01-22 12:51 ` Greg Kroah-Hartman
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