6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Niklas Cassel <cassel@xxxxxxxxxx>
[ Upstream commit f6549f538fe0b2c389e1a7037f4e21039e25137a ]
libsas is currently not freeing all the struct ata_port struct members,
e.g. ncq_sense_buf for a driver supporting Command Duration Limits (CDL).
Add a function, ata_port_free(), that is used to free a ata_port,
including its struct members. It makes sense to keep the code related to
freeing a ata_port in its own function, which will also free all the
struct members of struct ata_port.
Fixes: 18bd7718b5c4 ("scsi: ata: libata: Handle completion of CDL commands using policy 0xD")
Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240629124210.181537-8-cassel@xxxxxxxxxx
Signed-off-by: Niklas Cassel <cassel@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/ata/libata-core.c | 24 ++++++++++++++----------
drivers/scsi/libsas/sas_ata.c | 6 +++---
drivers/scsi/libsas/sas_discover.c | 2 +-
include/linux/libata.h | 1 +
4 files changed, 19 insertions(+), 14 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 9712da1cbfc8a..8489ae17e16c0 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5499,6 +5499,18 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
return ap;
}
+void ata_port_free(struct ata_port *ap)
+{
+ if (!ap)
+ return;
+
+ kfree(ap->pmp_link);
+ kfree(ap->slave_link);
+ kfree(ap->ncq_sense_buf);
+ kfree(ap);
+}
+EXPORT_SYMBOL_GPL(ata_port_free);
+
static void ata_devres_release(struct device *gendev, void *res)
{
struct ata_host *host = dev_get_drvdata(gendev);
@@ -5525,15 +5537,7 @@ static void ata_host_release(struct kref *kref)
int i;
for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
-
- if (!ap)
- continue;
-
- kfree(ap->pmp_link);
- kfree(ap->slave_link);
- kfree(ap->ncq_sense_buf);
- kfree(ap);
+ ata_port_free(host->ports[i]);
host->ports[i] = NULL;
}
kfree(host);
@@ -5916,7 +5920,7 @@ int ata_host_register(struct ata_host *host, const struct scsi_host_template *sh
* allocation time.
*/
for (i = host->n_ports; host->ports[i]; i++)
- kfree(host->ports[i]);
+ ata_port_free(host->ports[i]);
/* give ports names and add SCSI hosts */
for (i = 0; i < host->n_ports; i++) {
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 12e2653846e3f..70891a1e98a01 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -610,15 +610,15 @@ int sas_ata_init(struct domain_device *found_dev)
rc = ata_sas_tport_add(ata_host->dev, ap);
if (rc)
- goto destroy_port;
+ goto free_port;
found_dev->sata_dev.ata_host = ata_host;
found_dev->sata_dev.ap = ap;
return 0;
-destroy_port:
- kfree(ap);
+free_port:
+ ata_port_free(ap);
free_host:
ata_host_put(ata_host);
return rc;
diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index ff7b63b10aeb3..8afd8ce259e27 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -301,7 +301,7 @@ void sas_free_device(struct kref *kref)
if (dev_is_sata(dev) && dev->sata_dev.ap) {
ata_sas_tport_delete(dev->sata_dev.ap);
- kfree(dev->sata_dev.ap);
+ ata_port_free(dev->sata_dev.ap);
ata_host_put(dev->sata_dev.ata_host);
dev->sata_dev.ata_host = NULL;
dev->sata_dev.ap = NULL;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index e20bbcf594bf3..91c4e11cb6abb 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1242,6 +1242,7 @@ extern int ata_slave_link_init(struct ata_port *ap);
extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
struct ata_port_info *, struct Scsi_Host *);
extern void ata_port_probe(struct ata_port *ap);
+extern void ata_port_free(struct ata_port *ap);
extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap);
extern void ata_sas_tport_delete(struct ata_port *ap);
extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
--
2.43.0
