linux-kernel - [PATCH 0/0] regmap: drop cache if the bus transfer error

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-next>] [day] [month] [year] [list]

Message-Id: <1471502632-5275-1-git-send-email-zhangqing@rock-chips.com>
Date:	Thu, 18 Aug 2016 14:43:51 +0800
From:	Elaine Zhang <zhangqing@...k-chips.com>
To:	heiko@...ech.de
Cc:	huangtao@...k-chips.com, zyw@...k-chips.com, xxx@...k-chips.com,
	jay.xu@...k-chips.com, linux-kernel@...r.kernel.org,
	Elaine Zhang <zhangqing@...k-chips.com>
Subject: [PATCH 0/0] regmap: drop cache if the bus transfer error

regmap_write
    ->_regmap_raw_write
    -->regcache_write first and than use map->bus->write to wirte i2c or spi
    But if the i2c or spi transfer failed, But the cache is updated, So if I use
    regmap_read will get the cache data which is not the real register value.

I think the regmap should handle that gracefully,
and may be my modify is not the best way.
But as I described is how to slove that problem.

Elaine Zhang (1):
  regmap: drop cache if the bus transfer error

 drivers/base/regmap/regmap.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
1.9.1