From 58968fc8fbb3869d9ec84d32b88b58b0423d6793 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Thu, 16 Jan 2014 11:25:36 +0100 Subject: [PATCH] [SCSI] megaraid_sas: check return value for megasas_get_pd_list() When megasas_get_pd_list() fails we cannot detect any drives, so we should be checking the return value accordingly. [jejb: checkpatch fix] Signed-off-by: Hannes Reinecke Acked-by: Kashyap Desai Signed-off-by: James Bottomley --- drivers/scsi/megaraid/megaraid_sas_base.c | 38 +++++++++++++---------- 1 file changed, 21 insertions(+), 17 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 3b7ad10497fe..f21e48b2e956 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3763,7 +3763,10 @@ static int megasas_init_fw(struct megasas_instance *instance) memset(instance->pd_list, 0 , (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); - megasas_get_pd_list(instance); + if (megasas_get_pd_list(instance) < 0) { + printk(KERN_ERR "megasas: failed to get PD list\n"); + goto fail_init_adapter; + } memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); if (megasas_ld_list_query(instance, @@ -5592,22 +5595,23 @@ megasas_aen_polling(struct work_struct *work) if (doscan) { printk(KERN_INFO "scanning ...\n"); - megasas_get_pd_list(instance); - for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { - for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { - pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; - sdev1 = scsi_device_lookup(host, i, j, 0); - if (instance->pd_list[pd_index].driveState == - MR_PD_STATE_SYSTEM) { - if (!sdev1) { - scsi_add_device(host, i, j, 0); - } - if (sdev1) - scsi_device_put(sdev1); - } else { - if (sdev1) { - scsi_remove_device(sdev1); - scsi_device_put(sdev1); + if (megasas_get_pd_list(instance) == 0) { + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { + pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; + sdev1 = scsi_device_lookup(host, i, j, 0); + if (instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) { + if (!sdev1) { + scsi_add_device(host, i, j, 0); + } + if (sdev1) + scsi_device_put(sdev1); + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } } } } -- 2.39.2