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Reported sector size must always be a power of 2.

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svn path=/trunk/; revision=3251
This commit is contained in:
Eric Kohl 2002-07-18 00:30:22 +00:00
parent fc1193592b
commit 99197ba099
1 changed files with 18 additions and 2 deletions
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20
reactos/drivers/storage/atapi/atapi.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: atapi.c,v 1.25 2002/07/13 11:31:02 ekohl Exp $
/* $Id: atapi.c,v 1.26 2002/07/18 00:30:22 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS ATAPI miniport driver
@ -1058,6 +1058,8 @@ AtapiIdentifyDevice(IN ULONG CommandPort,
IN BOOLEAN Atapi,
OUT PIDE_DRIVE_IDENTIFY DrvParms)
{
LONG i;
/* Get the Drive Identify block from drive or die */
if (AtapiPolledRead(CommandPort,
ControlPort,
@ -1113,7 +1115,21 @@ AtapiIdentifyDevice(IN ULONG CommandPort,
DPRINT("BytesPerSector %d\n", DrvParms->BytesPerSector);
if (DrvParms->BytesPerSector == 0)
DrvParms->BytesPerSector = 512;
{
DrvParms->BytesPerSector = 512;
}
else
{
for (i = 15; i >= 0; i--)
{
if (DrvParms->BytesPerSector & (1 << i))
{
DrvParms->BytesPerSector = 1 << i;
break;
}
}
}
DPRINT("BytesPerSector %d\n", DrvParms->BytesPerSector);
return(TRUE);
}