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| author | Jian Zhang <zhangjian.3032@bytedance.com> | 2023-10-06 05:22:33 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2023-10-10 22:34:02 +0300 |
| commit | 54f1840ddee9bbdc8dd89fbbfdfa632401244146 (patch) | |
| tree | e205c5b1c37af1f1944e41cfb72eaf0609c13c0e /security | |
| parent | 94f6f0550c625fab1f373bb86a6669b45e9748b3 (diff) | |
| download | linux-54f1840ddee9bbdc8dd89fbbfdfa632401244146.tar.xz | |
i2c: aspeed: Fix i2c bus hang in slave read
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 <zhangjian.3032@bytedance.com>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Tested-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions