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From: Alexander Motin <mav@FreeBSD.org>
Date: Sat, 5 Jun 2010 08:02:19 +0000 (UTC)
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Subject: svn commit: r208813 - head/sys/dev/ahci
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Author: mav
Date: Sat Jun  5 08:02:19 2010
New Revision: 208813
URL: http://svn.freebsd.org/changeset/base/208813

Log:
  Fix attach errors handling.
  
  Found with:   Coverity Prevent(tm)
  CID:          3424

Modified:
  head/sys/dev/ahci/ahci.c

Modified: head/sys/dev/ahci/ahci.c
==============================================================================
--- head/sys/dev/ahci/ahci.c	Sat Jun  5 08:00:52 2010	(r208812)
+++ head/sys/dev/ahci/ahci.c	Sat Jun  5 08:02:19 2010	(r208813)
@@ -898,9 +898,9 @@ ahci_ch_attach(device_t dev)
 	rid = ATA_IRQ_RID;
 	if (!(ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 	    &rid, RF_SHAREABLE | RF_ACTIVE))) {
-		bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
 		device_printf(dev, "Unable to map interrupt\n");
-		return (ENXIO);
+		error = ENXIO;
+		goto err0;
 	}
 	if ((bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, NULL,
 	    ahci_ch_intr_locked, dev, &ch->ih))) {
@@ -934,9 +934,10 @@ ahci_ch_attach(device_t dev)
 	    (ch->caps & AHCI_CAP_SNCQ) ? ch->numslots : 0,
 	    devq);
 	if (ch->sim == NULL) {
+		cam_simq_free(devq);
 		device_printf(dev, "unable to allocate sim\n");
 		error = ENOMEM;
-		goto err2;
+		goto err1;
 	}
 	if (xpt_bus_register(ch->sim, dev, 0) != CAM_SUCCESS) {
 		device_printf(dev, "unable to register xpt bus\n");
@@ -963,6 +964,7 @@ err2:
 	cam_sim_free(ch->sim, /*free_devq*/TRUE);
 err1:
 	bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
+err0:
 	bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
 	mtx_unlock(&ch->mtx);
 	return (error);