linux-kernel - [PATCH] scsi: acornscsi: Fix an error handling path in 'acornscsi

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Date:   Sat, 30 May 2020 10:16:22 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     linux@...linux.org.uk, jejb@...ux.ibm.com,
        martin.petersen@...cle.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] scsi: acornscsi: Fix an error handling path in 'acornscsi_probe()'

'ret' is known to be 0 at this point.
So, explicitly return -ENOMEM if one of the 'ecardm_iomap()' calls fail.

Fixes: e95a1b656a98 ("[ARM] rpc: acornscsi: update to new style ecard driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/scsi/arm/acornscsi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/arm/acornscsi.c b/drivers/scsi/arm/acornscsi.c
index ddb52e7ba622..9a912fd0f70b 100644
--- a/drivers/scsi/arm/acornscsi.c
+++ b/drivers/scsi/arm/acornscsi.c
@@ -2911,8 +2911,10 @@ static int acornscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 
 	ashost->base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	ashost->fast = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
-	if (!ashost->base || !ashost->fast)
+	if (!ashost->base || !ashost->fast) {
+		ret = -ENOMEM;
 		goto out_put;
+	}
 
 	host->irq = ec->irq;
 	ashost->host = host;
-- 
2.25.1