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| author | Mao Jinlong <[email protected]> | 2022-03-09 14:22:06 +0000 |
|---|---|---|
| committer | Suzuki K Poulose <[email protected]> | 2022-05-04 10:43:59 +0000 |
| commit | 8c1d3f79d9ca48e406b78e90e94cf09a8c076bf2 (patch) | |
| tree | 27b8807052d3bd03f507830ebbf23b91300998c7 /drivers/hwtracing/coresight/coresight-cpu-debug.c | |
| parent | coresight: etm4x: Cleanup TRCRSCTLRn register accesses (diff) | |
| download | kernel-8c1d3f79d9ca48e406b78e90e94cf09a8c076bf2.tar.gz kernel-8c1d3f79d9ca48e406b78e90e94cf09a8c076bf2.zip | |
coresight: core: Fix coresight device probe failure issue
It is possibe that probe failure issue happens when the device
and its child_device's probe happens at the same time.
In coresight_make_links, has_conns_grp is true for parent, but
has_conns_grp is false for child device as has_conns_grp is set
to true in coresight_create_conns_sysfs_group. The probe of parent
device will fail at this condition. Add has_conns_grp check for
child device before make the links and make the process from
device_register to connection_create be atomic to avoid this
probe failure issue.
Cc: [email protected]
Suggested-by: Suzuki K Poulose <[email protected]>
Suggested-by: Mike Leach <[email protected]>
Signed-off-by: Mao Jinlong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ Added Cc stable ]
Signed-off-by: Suzuki K Poulose <[email protected]>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-cpu-debug.c')
0 files changed, 0 insertions, 0 deletions