summaryrefslogtreecommitdiffstats
path: root/kernel/sched_cpupri.h
diff options
context:
space:
mode:
authorAlan Cox <alan@redhat.com>2008-08-01 09:18:34 +0100
committerJeff Garzik <jgarzik@redhat.com>2008-08-22 02:27:49 -0400
commitb15b3ebae102f89c25ccbcae0b2099af312f2e82 (patch)
tree73f64d0e578d1c6bc6a3dc43f940a31f24daad8f /kernel/sched_cpupri.h
parent20e2de4a505aa02131a95665e8920eb053fce686 (diff)
downloadlinux-b15b3ebae102f89c25ccbcae0b2099af312f2e82.tar.gz
linux-b15b3ebae102f89c25ccbcae0b2099af312f2e82.tar.bz2
linux-b15b3ebae102f89c25ccbcae0b2099af312f2e82.zip
libata: Fix a large collection of DMA mode mismatches
Dave Müller sent a diff for the pata_oldpiix that highlighted a problem where a lot of the ATA drivers assume dma_mode == 0 means "no DMA" while the core code uses 0xFF. This turns out to have other consequences such as code doing >= XFER_UDMA_0 also catching 0xFF as UDMAlots. Fortunately it doesn't generally affect set_dma_mode, although some drivers call back into their own set mode code from other points. Having been through the drivers I've added helpers for using_udma/using_mwdma dma_enabled so that people don't open code ranges that may change (eg if UDMA8 appears somewhere) Thanks to David for the initial bits [and added fix for pata_oldpiix from and signed-off-by Dave Mueller <dave.mueller@gmx.ch> -jg] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'kernel/sched_cpupri.h')
0 files changed, 0 insertions, 0 deletions