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fsi: core: Disable link when slave init fails

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In the case that links don't have slaves or fail to be accessed, the
master should disable the link during the scan since it won't be using
the slave.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
This commit is contained in:
Eddie James 2020-06-09 16:39:28 -05:00 committed by Joel Stanley
parent 04635a30dd
commit b36875a453
1 changed files with 12 additions and 1 deletions
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13
drivers/fsi/fsi-core.c
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@ -1154,6 +1154,14 @@ static int fsi_master_write(struct fsi_master *master, int link,
return rc;
}
static int fsi_master_link_disable(struct fsi_master *master, int link)
{
if (master->link_enable)
return master->link_enable(master, link, false);
return 0;
}
static int fsi_master_link_enable(struct fsi_master *master, int link)
{
if (master->link_enable)
@ -1192,12 +1200,15 @@ static int fsi_master_scan(struct fsi_master *master)
}
rc = fsi_master_break(master, link);
if (rc) {
fsi_master_link_disable(master, link);
dev_dbg(&master->dev,
"break to link %d failed: %d\n", link, rc);
continue;
}
fsi_slave_init(master, link, 0);
rc = fsi_slave_init(master, link, 0);
if (rc)
fsi_master_link_disable(master, link);
}
return 0;