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Document what r44552 is all about.

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svn path=/trunk/; revision=44555
This commit is contained in:
Colin Finck 2009-12-12 19:38:03 +00:00
parent 63953fddce
commit a9c37bad74
1 changed files with 6 additions and 0 deletions
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6
reactos/drivers/storage/ide/uniata/id_ata.cpp
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@ -689,11 +689,17 @@ AtapiSoftReset(
SelectDrive(chan, DeviceNumber);
AtapiStallExecution(10000);
AtapiWritePort1(chan, IDX_IO1_o_Command, IDE_COMMAND_ATAPI_RESET);
// ReactOS modification: Already stop looping when we know that the drive has finished resetting.
// Not all controllers clear the IDE_STATUS_BUSY flag (e.g. not the VMware one), so ensure that
// the maximum waiting time (30 * i = 0.9 seconds) does not exceed the one of the original
// implementation. (which is around 1 second)
while ((AtapiReadPort1(chan, IDX_IO1_i_Status) & IDE_STATUS_BUSY) &&
i--)
{
AtapiStallExecution(30);
}
SelectDrive(chan, DeviceNumber);
WaitOnBusy(chan);
GetBaseStatus(chan, statusByte2);