diff options
| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-11-02 18:15:43 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-11-02 18:15:43 +1100 |
| commit | 2be7a906752abf8dce9350c23b6d1036049a5d3e (patch) | |
| tree | ef178fa5801bdce24938819086662bb747d8c0c2 /drivers/scsi/ide-scsi.c | |
| parent | aaf8a7a2949481482200686c7bd3852e5be2e093 (diff) | |
| parent | fbf1769d08a8b085834dceb228540153ac2cd534 (diff) | |
Merge Paulus' tree
Diffstat (limited to 'drivers/scsi/ide-scsi.c')
| -rw-r--r-- | drivers/scsi/ide-scsi.c | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 00d6a6657eb..a440ea38efa 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -180,12 +180,22 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne return; } count = min(pc->sg->length - pc->b_count, bcount); - buf = kmap_atomic(pc->sg->page, KM_IRQ0); - drive->hwif->atapi_input_bytes(drive, - buf + pc->b_count + pc->sg->offset, count); - kunmap_atomic(buf, KM_IRQ0); - bcount -= count; - pc->b_count += count; + if (PageHighMem(pc->sg->page)) { + unsigned long flags; + + local_irq_save(flags); + buf = kmap_atomic(pc->sg->page, KM_IRQ0) + + pc->sg->offset; + drive->hwif->atapi_input_bytes(drive, + buf + pc->b_count, count); + kunmap_atomic(buf - pc->sg->offset, KM_IRQ0); + local_irq_restore(flags); + } else { + buf = page_address(pc->sg->page) + pc->sg->offset; + drive->hwif->atapi_input_bytes(drive, + buf + pc->b_count, count); + } + bcount -= count; pc->b_count += count; if (pc->b_count == pc->sg->length) { pc->sg++; pc->b_count = 0; @@ -205,12 +215,22 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign return; } count = min(pc->sg->length - pc->b_count, bcount); - buf = kmap_atomic(pc->sg->page, KM_IRQ0); - drive->hwif->atapi_output_bytes(drive, - buf + pc->b_count + pc->sg->offset, count); - kunmap_atomic(buf, KM_IRQ0); - bcount -= count; - pc->b_count += count; + if (PageHighMem(pc->sg->page)) { + unsigned long flags; + + local_irq_save(flags); + buf = kmap_atomic(pc->sg->page, KM_IRQ0) + + pc->sg->offset; + drive->hwif->atapi_output_bytes(drive, + buf + pc->b_count, count); + kunmap_atomic(buf - pc->sg->offset, KM_IRQ0); + local_irq_restore(flags); + } else { + buf = page_address(pc->sg->page) + pc->sg->offset; + drive->hwif->atapi_output_bytes(drive, + buf + pc->b_count, count); + } + bcount -= count; pc->b_count += count; if (pc->b_count == pc->sg->length) { pc->sg++; pc->b_count = 0; |