coresight: ultrasoc-smb: Config SMB buffer before register sink

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The SMB dirver register the enable/disable sysfs interface in function
smb_register_sink(), however the buffer depends on the following
configuration to work well. So it'll be possible for user to access an
unreset one.

Move the config buffer operation to before register_sink().
Ignore the return value, if smb_config_inport() fails. That will
cause the hardwares disable trace path to fail, should not affect
SMB driver remove. So we make smb_remove() return success,

Fixes: 06f5c2926a ("drivers/coresight: Add UltraSoc System Memory Buffer driver")
Signed-off-by: Junhao He <hejunhao3@huawei.com>
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20231114133346.30489-3-hejunhao3@huawei.com

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Junhao He 2023-11-14 21:33:44 +08:00 • committed by Suzuki K Poulose

parent b8411287ae

commit 830a7f54db

1 changed files with 8 additions and 13 deletions

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drivers/hwtracing/coresight/ultrasoc-smb.c

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