linux-kernel - [PATCH] zorro: Fix a resource leak in zorro7xx_remove

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Message-Id: <247066a3104d25f9a05de8b3270fc3c848763bcc.1647673264.git.christophe.jaillet@wanadoo.fr>
Date:   Sat, 19 Mar 2022 08:01:24 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        James Bottomley <James.Bottomley@...elEye.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-scsi@...r.kernel.org
Subject: [PATCH] zorro: Fix a resource leak in zorro7xx_remove_one()

The error handling path of the probe releases a resource that is not freed
in the remove function.

In some cases, a ioremap() must be undone.

Add the missing iounmap() call in the remove function.

Fixes: 45804fbb00ee ("[SCSI] 53c700: Amiga Zorro NCR53c710 SCSI")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/scsi/zorro7xx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/zorro7xx.c b/drivers/scsi/zorro7xx.c
index 27b9e2baab1a..7acf9193a9e8 100644
--- a/drivers/scsi/zorro7xx.c
+++ b/drivers/scsi/zorro7xx.c
@@ -159,6 +159,8 @@ static void zorro7xx_remove_one(struct zorro_dev *z)
 	scsi_remove_host(host);
 
 	NCR_700_release(host);
+	if (host->base > 0x01000000)
+		iounmap(hostdata->base);
 	kfree(hostdata);
 	free_irq(host->irq, host);
 	zorro_release_device(z);
-- 
2.32.0