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fsi: Lock mutex for master device registration

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Because master device registration may cause hub master scans, or
user scans may begin before device registration has ended, so the
master scan lock must be held while registering the device.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20230809180814.151984-3-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
This commit is contained in:
Eddie James 2023-08-09 13:08:14 -05:00 committed by Joel Stanley
parent adde0e112c
commit b1d3a803ac
1 changed files with 5 additions and 5 deletions
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10
drivers/fsi/fsi-core.c
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@ -1326,20 +1326,20 @@ int fsi_master_register(struct fsi_master *master)
master->dev.class = &fsi_master_class;
mutex_lock(&master->scan_lock);
rc = device_register(&master->dev);
if (rc) {
ida_free(&master_ida, master->idx);
return rc;
goto out;
}
np = dev_of_node(&master->dev);
if (!of_property_read_bool(np, "no-scan-on-init")) {
mutex_lock(&master->scan_lock);
fsi_master_scan(master);
mutex_unlock(&master->scan_lock);
}
return 0;
out:
mutex_unlock(&master->scan_lock);
return rc;
}
EXPORT_SYMBOL_GPL(fsi_master_register);