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authorFinn Thain2016-03-23 21:10:18 +1100
committerMartin K. Petersen2016-04-11 16:57:09 -0400
commit438af51c642926f1c1844846bee1c3fb568dcd64 (patch)
treed499b808b5aff4ba0c5bf151d06ffcd20d563da8 /lib/decompress_unlz4.c
parent6c4b88ca59ba1a68f707f19dba1744ed19e89fce (diff)
ncr5380: Adopt uniform DMA setup convention
Standardize the DMA setup hooks so that the DMA implementation in atari_NCR5380.c can be reconciled with pseudo DMA implementation in NCR5380.c. Calls to NCR5380_dma_recv_setup() and NCR5380_dma_send_setup() return a negative value on failure, zero on PDMA transfer success and a positive byte count for DMA setup success. This convention is not entirely new, but is now applied consistently. Also remove a pointless Status Register access: the *phase assignment is redundant because after NCR5380_transfer_dma() returns control to NCR5380_information_transfer(), that routine then returns control to NCR5380_main(), which means *phase is dead. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'lib/decompress_unlz4.c')
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