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Subject[PATCH v2] regmap: Check readable regs in _regmap_read
Date
Check if regs are readable.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

Changes in v2:
- Move checking below cache read

drivers/base/regmap/regmap.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6a19515..b897c1a 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1736,6 +1736,9 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
if (map->cache_only)
return -EBUSY;

+ if (!regmap_readable(map, reg))
+ return -EIO;
+
ret = map->reg_read(context, reg, val);
if (ret == 0) {
#ifdef LOG_DEVICE
--
1.8.2.3
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