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Use properly aligned buffer in usb_alloc

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The PA adress must be gathered from an aligned VA,
not the RAW pointer to the memory space.

Reviewed by:   hselasky
Submitted by:  Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Juniper Networks Inc.
Differential Revision: https://reviews.freebsd.org/D4140
This commit is contained in:
Zbigniew Bodek 2015-11-27 18:13:28 +00:00
parent 9dbc22c5aa
commit 7f34c97a79
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=291399
1 changed files with 1 additions and 1 deletions
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2
sys/boot/usb/usb_busdma_loader.c
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@ -233,7 +233,7 @@ usb_pc_alloc_mem(struct usb_page_cache *pc, struct usb_page *pg,
pc->ismultiseg = (align == 1);
/* compute physical address */
usb_pc_common_mem_cb(pc, ptr, size);
usb_pc_common_mem_cb(pc, pc->buffer, size);
usb_pc_cpu_flush(pc);
return (0);