Changeset 102 for trunk/src/os2ahci/ahci.c

Timestamp:

Jun 6, 2011, 4:25:25 PM (14 years ago)

Author:

Markus Thielen

Message:

avoid possible IRQ storm during error handling

File:

• trunk/src/os2ahci/ahci.c (modified) (3 diffs)

trunk/src/os2ahci/ahci.c

@@ -1337 +1337 @@
 
   if (irq_stat & PORT_IRQ_ERROR) {
-    /* this is an error interrupt */
+    /* this is an error interrupt;
+     * disable port interrupts to avoid IRQ storm until error condition
+     * has been cleared by the restart handler
+     */
+    writel(port_mmio + PORT_IRQ_MASK, 0);
     ahci_error_intr(ai, p, irq_stat);
     return;
@@ -1443 +1447 @@
   if (reset_port) {
     /* need to reset the port; leave this to the reset context hook */
+
     ports_to_reset[ad_no(ai)] |= 1UL << p;
     DevHelp_ArmCtxHook(0, reset_ctxhook_h);
@@ -1454 +1459 @@
    * thus we need to offload this functionality to the restart context hook.
    */
-  if (irq_stat & PORT_IRQ_TF_ERR) {
-    ports_to_restart[ad_no(ai)] |= 1UL << p;
-    DevHelp_ArmCtxHook(0, restart_ctxhook_h);
-  }
+  ports_to_restart[ad_no(ai)] |= 1UL << p;
+  DevHelp_ArmCtxHook(0, restart_ctxhook_h);
 }