linux-kernel - [PATCH 3/4][RFC] regmap: add regmap_fields_force

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <871thcjaue.wl%kuninori.morimoto.gx@renesas.com>
Date:	Tue, 16 Jun 2015 08:52:55 +0000
From:	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:	Mark Brown <broonie@...nel.org>
CC:	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	shiiba <naoya.shiiba.nx@...esas.com>
Subject: [PATCH 3/4][RFC] regmap: add regmap_fields_force_write()

regmap_fields_force_write() is similar to regmap_fields_write(),
but regmap_fields_force_write() write data to register even though
it is same value.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
---
 drivers/base/regmap/regmap.c | 12 ++++++++++++
 include/linux/regmap.h       |  2 ++
 2 files changed, 14 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index a5bb3fa..c07d74b 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1625,6 +1625,18 @@ int regmap_fields_write(struct regmap_field *field, unsigned int id,
 }
 EXPORT_SYMBOL_GPL(regmap_fields_write);
 
+int regmap_fields_force_write(struct regmap_field *field, unsigned int id,
+			unsigned int val)
+{
+	if (id >= field->id_size)
+		return -EINVAL;
+
+	return regmap_write_bits(field->regmap,
+				  field->reg + (field->id_offset * id),
+				  field->mask, val << field->shift);
+}
+EXPORT_SYMBOL_GPL(regmap_fields_force_write);
+
 /**
  * regmap_fields_update_bits():	Perform a read/modify/write cycle
  *                              on the register field
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index e4b9ad4..519c962 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -505,6 +505,8 @@ int regmap_field_update_bits(struct regmap_field *field,
 
 int regmap_fields_write(struct regmap_field *field, unsigned int id,
 			unsigned int val);
+int regmap_fields_force_write(struct regmap_field *field, unsigned int id,
+			unsigned int val);
 int regmap_fields_read(struct regmap_field *field, unsigned int id,
 		       unsigned int *val);
 int regmap_fields_update_bits(struct regmap_field *field,  unsigned int id,
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/