From: Niklas Cassel niklas.cassel@wdc.com
[ Upstream commit 9c6e09a434e1317e09b78b3b69cd384022ec9a03 ]
ACS-5 section 7.13.6.36 Word 78: Serial ATA features supported states that:
If word 76 is not 0000h or FFFFh, word 78 reports the features supported by the device. If this word is not supported, the word shall be cleared to zero.
(This text also exists in really old ACS standards, e.g. ACS-3.)
Additionally, move the macro to the other ATA_ID_FEATURE_SUPP macros (which already have this check), thus making it more likely that the next ATA_ID_FEATURE_SUPP macro that is added will include this check.
Fixes: 65fe1f0f66a5 ("ahci: implement aggressive SATA device sleep support") Signed-off-by: Niklas Cassel niklas.cassel@wdc.com Signed-off-by: Damien Le Moal damien.lemoal@opensource.wdc.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/ata.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/linux/ata.h b/include/linux/ata.h index 868bfd503aee..bc136a43689f 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -566,6 +566,10 @@ struct ata_bmdma_prd { ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2))) +#define ata_id_has_devslp(id) \ + ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ + ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ + ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))) #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) #define ata_id_u32(id,n) \ @@ -578,7 +582,6 @@ struct ata_bmdma_prd {
#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) -#define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) #define ata_id_has_ncq_autosense(id) \ ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7))