[PATCH] libata-hp-prep: add ata_aux_wq
It's best to run ATA hotplug from EH but attaching SCSI devices needs working EH. ata_aux_wq is used to give SCSI hotplug operations a separate context. Signed-off-by: Tejun Heo <htejun@gmail.com>
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@ -69,6 +69,8 @@ static void ata_dev_xfermask(struct ata_device *dev);
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static unsigned int ata_unique_id = 1;
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static struct workqueue_struct *ata_wq;
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struct workqueue_struct *ata_aux_wq;
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int atapi_enabled = 1;
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module_param(atapi_enabled, int, 0444);
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MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
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@ -5623,6 +5625,12 @@ static int __init ata_init(void)
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if (!ata_wq)
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return -ENOMEM;
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ata_aux_wq = create_singlethread_workqueue("ata_aux");
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if (!ata_aux_wq) {
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destroy_workqueue(ata_wq);
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return -ENOMEM;
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}
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printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
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return 0;
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}
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@ -5630,6 +5638,7 @@ static int __init ata_init(void)
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static void __exit ata_exit(void)
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{
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destroy_workqueue(ata_wq);
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destroy_workqueue(ata_aux_wq);
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}
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module_init(ata_init);
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@ -39,6 +39,7 @@ struct ata_scsi_args {
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};
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/* libata-core.c */
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extern struct workqueue_struct *ata_aux_wq;
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extern int atapi_enabled;
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extern int atapi_dmadir;
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extern int libata_fua;
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