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i2c: spacemit: ensure bus release check runs when wait_bus_idle() fails

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spacemit_i2c_wait_bus_idle() only returns 0 on success or a negative
error code on failure.

Since 'ret' can never be positive, the final 'else' branch was
unreachable, and spacemit_i2c_check_bus_release() was never called.

This commit guarantees we attempt to release the bus whenever waiting for
an idle bus fails.

Fixes: 5ea558473f ("i2c: spacemit: add support for SpacemiT K1 SoC")
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
This commit is contained in:
Troy Mitchell 2025-09-25 10:02:25 +08:00 committed by Wolfram Sang
parent b492183652
commit 41d6f90ef5
1 changed files with 5 additions and 4 deletions
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9
drivers/i2c/busses/i2c-k1.c
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@ -476,12 +476,13 @@ static int spacemit_i2c_xfer(struct i2c_adapter *adapt, struct i2c_msg *msgs, in
spacemit_i2c_enable(i2c);
ret = spacemit_i2c_wait_bus_idle(i2c);
if (!ret)
if (!ret) {
ret = spacemit_i2c_xfer_msg(i2c);
else if (ret < 0)
dev_dbg(i2c->dev, "i2c transfer error: %d\n", ret);
else
if (ret < 0)
dev_dbg(i2c->dev, "i2c transfer error: %d\n", ret);
} else {
spacemit_i2c_check_bus_release(i2c);
}
spacemit_i2c_disable(i2c);