[src/nick-nhusb]: src/sys/dev/usb Allow sleeping in usb_block_allocmem - we'r...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a86b5903200f
branches:  nick-nhusb
changeset: 804455:a86b5903200f
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Nov 10 13:41:49 2015 +0000

description:
Allow sleeping in usb_block_allocmem - we're nearly there in the HCDs

diffstat:

 sys/dev/usb/usb_mem.c |  15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

diffs (62 lines):

diff -r a764619d236b -r a86b5903200f sys/dev/usb/usb_mem.c
--- a/sys/dev/usb/usb_mem.c     Tue Nov 10 08:44:09 2015 +0000
+++ b/sys/dev/usb/usb_mem.c     Tue Nov 10 13:41:49 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usb_mem.c,v 1.65.2.10 2015/09/29 11:38:29 skrll Exp $  */
+/*     $NetBSD: usb_mem.c,v 1.65.2.11 2015/11/10 13:41:49 skrll Exp $  */
 
 /*
  * Copyright (c) 1998 The NetBSD Foundation, Inc.
@@ -38,7 +38,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usb_mem.c,v 1.65.2.10 2015/09/29 11:38:29 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usb_mem.c,v 1.65.2.11 2015/11/10 13:41:49 skrll Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -137,6 +137,8 @@
        }
 
        DPRINTFN(6, "no free", 0, 0, 0, 0);
+       mutex_exit(&usb_blk_lock);
+
        b = kmem_zalloc(sizeof(*b), KM_SLEEP);
        if (b == NULL)
                return USBD_NOMEM;
@@ -160,22 +162,22 @@
 
        error = bus_dmamem_alloc(tag, b->size, align, 0,
                                 b->segs, b->nsegs,
-                                &b->nsegs, BUS_DMA_NOWAIT);
+                                &b->nsegs, BUS_DMA_WAITOK);
        if (error)
                goto free0;
 
        error = bus_dmamem_map(tag, b->segs, b->nsegs, b->size,
-                              &b->kaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
+                              &b->kaddr, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
        if (error)
                goto free1;
 
        error = bus_dmamap_create(tag, b->size, b->nsegs, b->size,
-                                 0, BUS_DMA_NOWAIT, &b->map);
+                                 0, BUS_DMA_WAITOK, &b->map);
        if (error)
                goto unmap;
 
        error = bus_dmamap_load(tag, b->map, b->kaddr, b->size, NULL,
-                               BUS_DMA_NOWAIT);
+                               BUS_DMA_WAITOK);
        if (error)
                goto destroy;
 
@@ -183,6 +185,7 @@
 #ifdef USB_FRAG_DMA_WORKAROUND
        memset(b->kaddr, 0, b->size);
 #endif
+       mutex_enter(&usb_blk_lock);
 
        return USBD_NORMAL_COMPLETION;