Tejun Heo wrote:
Add dev->acpi_init_gtm and store initial GTM values on host initialization. If the field is valid, ATA_PFLAG_INIT_GTM_VALID flag is set. This is to remember BIOS/firmware programmed initial timing for later use before reset and mode configuration modify it. Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
It sounds like pata_via and pata_amd need a foo_save_initial_config() much like AHCI, during which they would fill ppriv->init_gtm rather than ap->init_gtm. Thoughts? Both drivers are calling ata_acpi_cbl() themselves, permitting the possibility of ppriv->init_gtm.
This avoids forcing everyone else to bear the memory cost in ata_port for just these two drivers.
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