From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Date: Tue, 10 Oct 2023 21:34:20 +0200 Subject: [PATCH v3] i2c: aspeed: Fix i2c bus hang in slave read In-Reply-To: <20231006022233.3963590-1-zhangjian.3032@bytedance.com> References: <20231006022233.3963590-1-zhangjian.3032@bytedance.com> Message-ID: List-Id: To: linux-aspeed@lists.ozlabs.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Fri, Oct 06, 2023 at 10:22:33AM +0800, Jian Zhang wrote: > When the `CONFIG_I2C_SLAVE` option is enabled and the device operates > as a slave, a situation arises where the master sends a START signal > without the accompanying STOP signal. This action results in a > persistent I2C bus timeout. The core issue stems from the fact that > the i2c controller remains in a slave read state without a timeout > mechanism. As a consequence, the bus perpetually experiences timeouts. > > In this case, the i2c bus will be reset, but the slave_state reset is > missing. > > Fixes: fee465150b45 ("i2c: aspeed: Reset the i2c controller when timeout occurs") > Signed-off-by: Jian Zhang > Acked-by: Andi Shyti > Tested-by: Andrew Jeffery > Reviewed-by: Andrew Jeffery > Applied to for-current, thanks! -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: