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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-02-03 07:58:57 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-02-03 07:58:57 +1100 |
| commit | 9135f1901ee6449dfe338adf6e40e9c2025b8150 (patch) | |
| tree | 05e1ab38563a93cf0df8c05d21062b85b14f8491 /drivers/ide/ide-dma.c | |
| parent | 124d3b7041f9a0ca7c43a6293e1cae4576c32fd5 (diff) | |
| parent | d59823fa44f7d9babf586b3c705db314aa0f9822 (diff) | |
| download | kernel_samsung_smdk4412-9135f1901ee6449dfe338adf6e40e9c2025b8150.zip kernel_samsung_smdk4412-9135f1901ee6449dfe338adf6e40e9c2025b8150.tar.gz kernel_samsung_smdk4412-9135f1901ee6449dfe338adf6e40e9c2025b8150.tar.bz2 | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (95 commits)
ide-tape: remove idetape_config_t typedef
ide-tape: remove mtio.h related comments
ide-tape: make function name more accurate
ide-tape: remove unused sense packet commands.
ide-tape: use generic byteorder macros
ide-tape: remove EXPERIMENTAL driver status
ide-tape: use generic scsi commands
ide-tape: remove struct idetape_block_size_page_t
ide-tape: remove structs os_partition_t, os_dat_entry_t, os_dat_t
ide-tape: remove struct idetape_parameter_block_descriptor_t
ide-tape: remove struct idetape_medium_partition_page_t
ide-tape: remove struct idetape_data_compression_page_t
ide-tape: remove struct idetape_inquiry_result_t
ide-tape: remove struct idetape_capabilities_page_t
ide-tape: remove IDETAPE_DEBUG_BUGS
ide-tape: remove IDETAPE_DEBUG_INFO
ide-tape: dump gcw fields on error in idetape_identify_device()
ide-tape: remove struct idetape_mode_parameter_header_t
ide-tape: remove struct idetape_request_sense_result_t
ide-tape: remove dead code
...
Diffstat (limited to 'drivers/ide/ide-dma.c')
| -rw-r--r-- | drivers/ide/ide-dma.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 7beaf1e..3cf59f2 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -819,6 +819,26 @@ int ide_set_dma(ide_drive_t *drive) return 0; } +void ide_check_dma_crc(ide_drive_t *drive) +{ + u8 mode; + + ide_dma_off_quietly(drive); + drive->crc_count = 0; + mode = drive->current_speed; + /* + * Don't try non Ultra-DMA modes without iCRC's. Force the + * device to PIO and make the user enable SWDMA/MWDMA modes. + */ + if (mode > XFER_UDMA_0 && mode <= XFER_UDMA_7) + mode--; + else + mode = XFER_PIO_4; + ide_set_xfer_rate(drive, mode); + if (drive->current_speed >= XFER_SW_DMA_0) + ide_dma_on(drive); +} + #ifdef CONFIG_BLK_DEV_IDEDMA_PCI void ide_dma_lost_irq (ide_drive_t *drive) { |