linux-kernel - [PATCH 5.17 0982/1126] scsi: qla2xxx: Check for firmware dump already collected

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Date:   Tue,  5 Apr 2022 09:28:49 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Joe Carnuccio <joe.carnuccio@...ium.com>,
        Nilesh Javali <njavali@...vell.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 5.17 0982/1126] scsi: qla2xxx: Check for firmware dump already collected

From: Joe Carnuccio <joe.carnuccio@...ium.com>

commit cfbafad7c6032d449a5a07f2d273acd2437bbc6a upstream.

While allocating firmware dump, check if dump is already collected and do
not re-allocate the buffer.

Link: https://lore.kernel.org/r/20220110050218.3958-17-njavali@marvell.com
Cc: stable@...r.kernel.org
Signed-off-by: Joe Carnuccio <joe.carnuccio@...ium.com>
Signed-off-by: Nilesh Javali <njavali@...vell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/scsi/qla2xxx/qla_init.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3482,6 +3482,14 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *v
 	struct rsp_que *rsp = ha->rsp_q_map[0];
 	struct qla2xxx_fw_dump *fw_dump;
 
+	if (ha->fw_dump) {
+		ql_dbg(ql_dbg_init, vha, 0x00bd,
+		    "Firmware dump already allocated.\n");
+		return;
+	}
+
+	ha->fw_dumped = 0;
+	ha->fw_dump_cap_flags = 0;
 	dump_size = fixed_size = mem_size = eft_size = fce_size = mq_size = 0;
 	req_q_size = rsp_q_size = 0;