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authorCatalin Marinas <catalin.marinas@arm.com>2010-02-04 01:04:50 -0500
committerJeff Garzik <jgarzik@redhat.com>2010-02-04 01:04:50 -0500
commit2d68b7fe55d9e19a8a868224ed0dfd6526568521 (patch)
treef18068b57359ddc0be3d5fba6f8eabc097efd1af /arch/x86/pci
parentcedc9bf906dae044443d403371c887affdb44168 (diff)
[libata] Call flush_dcache_page after PIO data transfers in libata-sff.c
flush_dcache_page() must be called after (!ATA_TFLAG_WRITE) the data copying to avoid D-cache aliasing with user space or I-D cache coherency issues (when reading data from an ATA device using PIO, the kernel dirties the D-cache but there is no flush_dcache_page() required on Harvard architectures). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'arch/x86/pci')
0 files changed, 0 insertions, 0 deletions