From 966fbe193f47c68e70a80ec9991098e88e7959cb Mon Sep 17 00:00:00 2001 From: Vincent Pelletier Date: Tue, 21 May 2013 22:30:58 +0200 Subject: libata: Add atapi_dmadir force flag Some device require DMADIR to be enabled, but are not detected as such by atapi_id_dmadir. One such example is "Asus Serillel 2" SATA-host-to-PATA-device bridge: the bridge itself requires DMADIR, even if the bridged device does not. As atapi_dmadir module parameter can cause problems with some devices (as per Tejun Heo's memory), enabling it globally may not be possible depending on the hardware. This patch adds atapi_dmadir in the form of a "force" horkage value, allowing global, per-bus and per-device control. Signed-off-by: Vincent Pelletier Signed-off-by: Tejun Heo --- include/linux/libata.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/libata.h b/include/linux/libata.h index 47e029236f6e..c886dc87aa81 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -399,6 +399,7 @@ enum { ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ + ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ -- cgit v1.2.2