From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-i2c@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Wolfram Sang <wsa+renesas@sang-engineering.com>
Subject: [PATCH 0/2] i2c: rcar: increase robustness against long SMIs
Date: Fri, 20 May 2022 12:33:23 +0200 [thread overview]
Message-ID: <20220520103325.81110-1-wsa+renesas@sang-engineering.com> (raw)
A customer reported problems with the R-Car I2C driver with System
Management Interrupts lasting longer than 30us. Let's not comment about
SMIs taking this long (and even up to 200us), but improve the driver to
handle such situations.
Wolfram Sang (2):
i2c: rcar: avoid race condition with SMIs
i2c: rcar: refactor handling of first message
drivers/i2c/busses/i2c-rcar.c | 76 ++++++++++++++++++-----------------
1 file changed, 39 insertions(+), 37 deletions(-)
--
2.35.1
next reply other threads:[~2022-05-20 10:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-20 10:33 Wolfram Sang [this message]
2022-05-20 10:33 ` [PATCH 1/2] i2c: rcar: avoid race condition with SMIs Wolfram Sang
2022-05-21 6:37 ` Wolfram Sang
2022-05-20 10:33 ` [PATCH 2/2] i2c: rcar: refactor handling of first message Wolfram Sang
2022-05-21 6:37 ` Wolfram Sang
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