write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/infiniband/hw/qib/qib_driver.c
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@@ -49,8 +49,6 @@
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  */
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 const char ib_qib_version[] = QIB_DRIVER_VERSION "\n";
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-DEFINE_SPINLOCK(qib_devs_lock);
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-LIST_HEAD(qib_dev_list);
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 DEFINE_MUTEX(qib_mutex);	/* general driver use */
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 unsigned qib_ibmtu;
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@@ -96,11 +94,11 @@
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 {
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 	struct qib_devdata *dd;
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 	struct qib_pportdata *ppd;
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-	unsigned long flags;
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+	unsigned long index, flags;
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 	int pidx, nunits_active = 0;
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-	spin_lock_irqsave(&qib_devs_lock, flags);
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-	list_for_each_entry(dd, &qib_dev_list, list) {
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+	xa_lock_irqsave(&qib_dev_table, flags);
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+	xa_for_each(&qib_dev_table, index, dd) {
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 		if (!(dd->flags & QIB_PRESENT) || !dd->kregbase)
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 			continue;
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 		for (pidx = 0; pidx < dd->num_pports; ++pidx) {
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@@ -112,7 +110,7 @@
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 			}
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 		}
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 	}
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-	spin_unlock_irqrestore(&qib_devs_lock, flags);
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+	xa_unlock_irqrestore(&qib_dev_table, flags);
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 	return nunits_active;
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 }
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@@ -125,13 +123,12 @@
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 {
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 	int nunits = 0, npresent = 0, nup = 0;
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 	struct qib_devdata *dd;
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-	unsigned long flags;
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+	unsigned long index, flags;
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 	int pidx;
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 	struct qib_pportdata *ppd;
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-	spin_lock_irqsave(&qib_devs_lock, flags);
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-
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-	list_for_each_entry(dd, &qib_dev_list, list) {
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+	xa_lock_irqsave(&qib_dev_table, flags);
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+	xa_for_each(&qib_dev_table, index, dd) {
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 		nunits++;
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 		if ((dd->flags & QIB_PRESENT) && dd->kregbase)
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 			npresent++;
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@@ -142,8 +139,7 @@
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 				nup++;
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 		}
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 	}
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-
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-	spin_unlock_irqrestore(&qib_devs_lock, flags);
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+	xa_unlock_irqrestore(&qib_dev_table, flags);
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 	if (npresentp)
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 		*npresentp = npresent;