linux-kernel - [PATCH] scsi: pm8001: return error code if no attached dev

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Date:   Mon, 13 Nov 2023 13:01:48 +0800
From:   Su Hui <suhui@...china.com>
To:     jinpu.wang@...ud.ionos.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, nathan@...nel.org,
        ndesaulniers@...gle.com, trix@...hat.com
Cc:     Su Hui <suhui@...china.com>, damien.lemoal@...nsource.wdc.com,
        johannes.thumshirn@....com, yanaijie@...wei.com,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, kernel-janitors@...r.kernel.org
Subject: [PATCH] scsi: pm8001: return error code if no attached dev

Clang static analyzer complains that value stored to 'res' is never read.
Return the error code when sas_find_attached_phy_id() failed.

Fixes: ec64858657a8 ("scsi: pm8001: Use sas_find_attached_phy_id() instead of open coding it")
Signed-off-by: Su Hui <suhui@...china.com>
---
 drivers/scsi/pm8001/pm8001_sas.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index a5a31dfa4512..a1f58bfff5c0 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -662,6 +662,8 @@ static int pm8001_dev_found_notify(struct domain_device *dev)
 				   SAS_ADDR(dev->sas_addr),
 				   SAS_ADDR(parent_dev->sas_addr));
 			res = phy_id;
+			pm8001_free_dev(pm8001_device);
+			goto found_out;
 		} else {
 			pm8001_device->attached_phy = phy_id;
 		}
-- 
2.30.2