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ata: DMA requires a SG list

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READCD can actually be requested so that no SG list is prepared.
Should help with #13775
This commit is contained in:
Jérôme Duval 2018-03-13 19:48:26 +01:00
parent 690d16c628
commit 1ce4890bd6
1 changed files with 1 additions and 1 deletions
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src/add-ons/kernel/bus_managers/ata/ATAPIDevice.cpp
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@ -31,7 +31,7 @@ ATAPIDevice::SendPacket(ATARequest *request)
// crucial for the SCSI protocol)
// special offer: let READ_CD commands use DMA too
uint8 command = fPacket[0];
request->SetUseDMA(UseDMA()
request->SetUseDMA(UseDMA() && request->CCB()->sg_list != NULL
&& (command == SCSI_OP_READ_6 || command == SCSI_OP_WRITE_6
|| command == SCSI_OP_READ_10 || command == SCSI_OP_WRITE_10
|| command == SCSI_OP_READ_12 || command == SCSI_OP_WRITE_12