@@ -1973,6 +1973,13 @@ retry:
if (class == ATA_DEV_ATA) {
if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
goto err_out;
+ if (ap->host->flags & ATA_HOST_IGNORE_ATA &&
+ ata_id_is_ata(id)) {
+ ata_dev_dbg(dev,
+ "host indicates ignore ATA devices, ignored\n");
+ return -ENOENT;
+ }
+
} else {
if (ata_id_is_ata(id))
goto err_out;
@@ -247,6 +247,7 @@ enum {
ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
ATA_HOST_STARTED = (1 << 1), /* Host started */
ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
+ ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
/* bits 24:31 of host->flags are reserved for LLD specific flags */
Where devices are visible via more than one host we sometimes wish to indicate that cirtain devices should be ignored on a specific host. Add a host flag indicating that this host wishes to ignore ATA specific devices. Signed-off-by: Andy Whitcroft <apw@canonical.com> --- drivers/ata/libata-core.c | 7 +++++++ include/linux/libata.h | 1 + 2 files changed, 8 insertions(+)