diff mbox series

[v4,17/31] scsi: pm8001: Fix pm8001_tag_alloc() failures handling

Message ID 20220217132956.484818-18-damien.lemoal@opensource.wdc.com (mailing list archive)
State Superseded
Headers show
Series libsas and pm8001 fixes | expand

Commit Message

Damien Le Moal Feb. 17, 2022, 1:29 p.m. UTC
In mpi_set_phy_profile_req() and in pm8001_set_phy_profile_single(), if
pm8001_tag_alloc() fails to allocate a new tag, a warning message is
issued but the uninitialized tag variable is still used to build a
command. Avoid this by returning early in case of tag allocation
failure.

Also make sure to always return the error code returned by
pm8001_tag_alloc() when this function fails instead of an arbitrary
value.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: John Garry <john.garry@huawei.com>
---
 drivers/scsi/pm8001/pm80xx_hwi.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

Comments

Jinpu Wang Feb. 17, 2022, 7:31 p.m. UTC | #1
On Thu, Feb 17, 2022 at 2:30 PM Damien Le Moal
<damien.lemoal@opensource.wdc.com> wrote:
>
> In mpi_set_phy_profile_req() and in pm8001_set_phy_profile_single(), if
> pm8001_tag_alloc() fails to allocate a new tag, a warning message is
> issued but the uninitialized tag variable is still used to build a
> command. Avoid this by returning early in case of tag allocation
> failure.
>
> Also make sure to always return the error code returned by
> pm8001_tag_alloc() when this function fails instead of an arbitrary
> value.
>
> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
> Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
thx
> ---
>  drivers/scsi/pm8001/pm80xx_hwi.c | 15 ++++++++++-----
>  1 file changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
> index 8fd38e54f07c..76260d06b6be 100644
> --- a/drivers/scsi/pm8001/pm80xx_hwi.c
> +++ b/drivers/scsi/pm8001/pm80xx_hwi.c
> @@ -1191,7 +1191,7 @@ pm80xx_set_thermal_config(struct pm8001_hba_info *pm8001_ha)
>         memset(&payload, 0, sizeof(struct set_ctrl_cfg_req));
>         rc = pm8001_tag_alloc(pm8001_ha, &tag);
>         if (rc)
> -               return -1;
> +               return rc;
>
>         circularQ = &pm8001_ha->inbnd_q_tbl[0];
>         payload.tag = cpu_to_le32(tag);
> @@ -1240,7 +1240,7 @@ pm80xx_set_sas_protocol_timer_config(struct pm8001_hba_info *pm8001_ha)
>         rc = pm8001_tag_alloc(pm8001_ha, &tag);
>
>         if (rc)
> -               return -1;
> +               return rc;
>
>         circularQ = &pm8001_ha->inbnd_q_tbl[0];
>         payload.tag = cpu_to_le32(tag);
> @@ -1398,7 +1398,7 @@ static int pm80xx_encrypt_update(struct pm8001_hba_info *pm8001_ha)
>         memset(&payload, 0, sizeof(struct kek_mgmt_req));
>         rc = pm8001_tag_alloc(pm8001_ha, &tag);
>         if (rc)
> -               return -1;
> +               return rc;
>
>         circularQ = &pm8001_ha->inbnd_q_tbl[0];
>         payload.tag = cpu_to_le32(tag);
> @@ -4967,8 +4967,11 @@ static void mpi_set_phy_profile_req(struct pm8001_hba_info *pm8001_ha,
>
>         memset(&payload, 0, sizeof(payload));
>         rc = pm8001_tag_alloc(pm8001_ha, &tag);
> -       if (rc)
> +       if (rc) {
>                 pm8001_dbg(pm8001_ha, FAIL, "Invalid tag\n");
> +               return;
> +       }
> +
>         circularQ = &pm8001_ha->inbnd_q_tbl[0];
>         payload.tag = cpu_to_le32(tag);
>         payload.ppc_phyid =
> @@ -5010,8 +5013,10 @@ void pm8001_set_phy_profile_single(struct pm8001_hba_info *pm8001_ha,
>         memset(&payload, 0, sizeof(payload));
>
>         rc = pm8001_tag_alloc(pm8001_ha, &tag);
> -       if (rc)
> +       if (rc) {
>                 pm8001_dbg(pm8001_ha, INIT, "Invalid tag\n");
> +               return;
> +       }
>
>         circularQ = &pm8001_ha->inbnd_q_tbl[0];
>         opc = OPC_INB_SET_PHY_PROFILE;
> --
> 2.34.1
>
diff mbox series

Patch

diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 8fd38e54f07c..76260d06b6be 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -1191,7 +1191,7 @@  pm80xx_set_thermal_config(struct pm8001_hba_info *pm8001_ha)
 	memset(&payload, 0, sizeof(struct set_ctrl_cfg_req));
 	rc = pm8001_tag_alloc(pm8001_ha, &tag);
 	if (rc)
-		return -1;
+		return rc;
 
 	circularQ = &pm8001_ha->inbnd_q_tbl[0];
 	payload.tag = cpu_to_le32(tag);
@@ -1240,7 +1240,7 @@  pm80xx_set_sas_protocol_timer_config(struct pm8001_hba_info *pm8001_ha)
 	rc = pm8001_tag_alloc(pm8001_ha, &tag);
 
 	if (rc)
-		return -1;
+		return rc;
 
 	circularQ = &pm8001_ha->inbnd_q_tbl[0];
 	payload.tag = cpu_to_le32(tag);
@@ -1398,7 +1398,7 @@  static int pm80xx_encrypt_update(struct pm8001_hba_info *pm8001_ha)
 	memset(&payload, 0, sizeof(struct kek_mgmt_req));
 	rc = pm8001_tag_alloc(pm8001_ha, &tag);
 	if (rc)
-		return -1;
+		return rc;
 
 	circularQ = &pm8001_ha->inbnd_q_tbl[0];
 	payload.tag = cpu_to_le32(tag);
@@ -4967,8 +4967,11 @@  static void mpi_set_phy_profile_req(struct pm8001_hba_info *pm8001_ha,
 
 	memset(&payload, 0, sizeof(payload));
 	rc = pm8001_tag_alloc(pm8001_ha, &tag);
-	if (rc)
+	if (rc) {
 		pm8001_dbg(pm8001_ha, FAIL, "Invalid tag\n");
+		return;
+	}
+
 	circularQ = &pm8001_ha->inbnd_q_tbl[0];
 	payload.tag = cpu_to_le32(tag);
 	payload.ppc_phyid =
@@ -5010,8 +5013,10 @@  void pm8001_set_phy_profile_single(struct pm8001_hba_info *pm8001_ha,
 	memset(&payload, 0, sizeof(payload));
 
 	rc = pm8001_tag_alloc(pm8001_ha, &tag);
-	if (rc)
+	if (rc) {
 		pm8001_dbg(pm8001_ha, INIT, "Invalid tag\n");
+		return;
+	}
 
 	circularQ = &pm8001_ha->inbnd_q_tbl[0];
 	opc = OPC_INB_SET_PHY_PROFILE;