lkml.org 
[lkml]   [2015]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCHv2 2/2] regmap: cache: Move the num_reg_defaults check as early as possible
Date
If the register defaults are provided by the driver without the
number by mistake, it should just return an error with one promotion.

This should be as early as possible, then there is no need to verify
the register defaults' stride and the other code followed.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
---
drivers/base/regmap/regcache.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index d4e96dd..348be3a 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -109,6 +109,12 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
return 0;
}

+ if (config->reg_defaults && !config->num_reg_defaults) {
+ dev_err(map->dev,
+ "Register defaults are set without the number!\n");
+ return -EINVAL;
+ }
+
for (i = 0; i < config->num_reg_defaults; i++)
if (config->reg_defaults[i].reg % map->reg_stride)
return -EINVAL;
@@ -142,8 +148,6 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
* a copy of it.
*/
if (config->reg_defaults) {
- if (!map->num_reg_defaults)
- return -EINVAL;
tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults *
sizeof(struct reg_default), GFP_KERNEL);
if (!tmp_buf)
--
1.8.3.1




\
 
 \ /
  Last update: 2015-12-11 04:41    [W:0.062 / U:0.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site