Commit 546a4d18 authored by Finn Thain's avatar Finn Thain Committed by Martin K. Petersen

scsi: atari_scsi: Reset DMA during bus reset only under ST-DMA lock

The atari_scsi driver should not access Falcon DMA chip registers unless
it has acquired exclusive access to that chip. If the driver doesn't
have exclusive access then there's no need for a DMA reset as there are
no scsi commands in progress.
Signed-off-by: default avatarFinn Thain <[email protected]>
Tested-by: default avatarOndrej Zary <[email protected]>
Tested-by: default avatarMichael Schmitz <[email protected]>
Signed-off-by: Martin K. Petersen's avatarMartin K. Petersen <mar[email protected]>
parent b15e791d
......@@ -682,7 +682,8 @@ static int atari_scsi_bus_reset(struct scsi_cmnd *cmd)
if (IS_A_TT()) {
tt_scsi_dma.dma_ctrl = 0;
} else {
st_dma.dma_mode_status = 0x90;
if (stdma_is_locked_by(scsi_falcon_intr))
st_dma.dma_mode_status = 0x90;
atari_dma_active = 0;
atari_dma_orig_addr = NULL;
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