From 0d762b3af2a5b5095fec18aa4d61f408638aa9ca Mon Sep 17 00:00:00 2001 From: Xiang Chen Date: Thu, 18 Jan 2018 00:46:54 +0800 Subject: [PATCH] scsi: hisi_sas: fix a bug in hisi_sas_dev_gone() When device gone, NULL pointer can be accessed in free_device callback if during SAS controller reset as we clear structure sas_dev prior. Actually we can only set dev_type as SAS_PHY_UNUSED and not clear structure sas_dev as all the members of structure sas_dev will be re-initialized after device found. Signed-off-by: Xiang Chen Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas_main.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 791462d7fbfc..2d4dbed03ee3 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -796,7 +796,6 @@ static void hisi_sas_dev_gone(struct domain_device *device) hisi_hba->hw->clear_itct(hisi_hba, sas_dev); device->lldd_dev = NULL; - memset(sas_dev, 0, sizeof(*sas_dev)); } if (hisi_hba->hw->free_device)