From: Tomas Henzl <thenzl@redhat.com>
Date: Mon, 7 Jul 2014 15:20:00 +0000 (+0200)
Subject: pm8001: fix a memory leak in flash_update
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9422e864fa4e2d323407cfca6ca14712cf17fb40;p=linux-beck.git

pm8001: fix a memory leak in flash_update

ccb->fw_control_context is copied to local fw_control_context and
the local variable is never used later

Free ccb->fw_control_context.  The task is forgotten thus also the
reference to fw_control_context and the completion thread takes the info
from virt_ptr again.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index cc89d18e1ae6..2e5eb4bae44f 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -3624,15 +3624,11 @@ int pm8001_mpi_fw_flash_update_resp(struct pm8001_hba_info *pm8001_ha,
 		void *piomb)
 {
 	u32 status;
-	struct fw_control_ex	fw_control_context;
 	struct fw_flash_Update_resp *ppayload =
 		(struct fw_flash_Update_resp *)(piomb + 4);
 	u32 tag = le32_to_cpu(ppayload->tag);
 	struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[tag];
 	status = le32_to_cpu(ppayload->status);
-	memcpy(&fw_control_context,
-		ccb->fw_control_context,
-		sizeof(fw_control_context));
 	switch (status) {
 	case FLASH_UPDATE_COMPLETE_PENDING_REBOOT:
 		PM8001_MSG_DBG(pm8001_ha,
@@ -3675,11 +3671,11 @@ int pm8001_mpi_fw_flash_update_resp(struct pm8001_hba_info *pm8001_ha,
 			pm8001_printk("No matched status = %d\n", status));
 		break;
 	}
-	ccb->fw_control_context->fw_control->retcode = status;
-	complete(pm8001_ha->nvmd_completion);
+	kfree(ccb->fw_control_context);
 	ccb->task = NULL;
 	ccb->ccb_tag = 0xFFFFFFFF;
 	pm8001_tag_free(pm8001_ha, tag);
+	complete(pm8001_ha->nvmd_completion);
 	return 0;
 }
 
@@ -4884,6 +4880,10 @@ int pm8001_chip_set_nvmd_req(struct pm8001_hba_info *pm8001_ha,
 		break;
 	}
 	rc = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &nvmd_req, 0);
+	if (rc) {
+		kfree(fw_control_context);
+		pm8001_tag_free(pm8001_ha, tag);
+	}
 	return rc;
 }