linux-kernel - [RFC PATCH 4/5] Add Parity Calculation to formatted write

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Message-Id: <20211217201758.1743750-5-linuxkernel@fbautosys.co.uk>
Date:   Fri, 17 Dec 2021 20:17:57 +0000
From:   linuxkernel@...utosys.co.uk
To:     linux-kernel@...r.kernel.org
Cc:     broonie@...nel.org
Subject: [RFC PATCH 4/5] Add Parity Calculation to formatted write

From: Christopher Tyerman <c.tyerman@...ebladeautomationsystems.co.uk>

Altered formated write to set parity bit according to parity_write_mask

	modified:   drivers/base/regmap/regmap.c

Signed-off-by: Christopher Tyerman <c.tyerman@...ebladeautomationsystems.co.uk>
---
 drivers/base/regmap/regmap.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index ec91eff52465..ea1664fa4c60 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1967,6 +1967,10 @@ static int _regmap_bus_formatted_write(void *context, unsigned int reg,
 	regmap_set_work_buf_flag_mask(map, map->format.reg_bytes,
 					      map->write_flag_mask);
 
+	regmap_set_work_buf_parity_mask(map, map->format.reg_bytes,
+						map->parity_write_mask, map->write_flag_mask, reg,
+						&val, sizeof(val));
+
 	trace_regmap_hw_write_start(map, reg, 1);
 
 	ret = map->bus->write(map->bus_context, map->work_buf,
-- 
2.25.1