diff options
author | Paul Mundt <lethal@linux-sh.org> | 2009-02-12 17:27:56 +0900 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2009-02-12 17:27:56 +0900 |
commit | 41480ae7a383dcffa497decdd97b3cb2caaa18ec (patch) | |
tree | f1e3afce2cbd0bbc544cd86a73e5b3093eb081c4 /include/linux/ata.h | |
parent | 508eb2ce222053e51e2243b7add8eeac85b1d250 (diff) | |
parent | 34aeb43e2d3800f4d8f96feb9f1b49cd506679d5 (diff) |
Merge branch 'sh/stable-updates'
Diffstat (limited to 'include/linux/ata.h')
-rw-r--r-- | include/linux/ata.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index a53318b8cbd..08a86d5cdf1 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -731,12 +731,17 @@ static inline int ata_id_current_chs_valid(const u16 *id) static inline int ata_id_is_cfa(const u16 *id) { - if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */ + if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */ return 1; - /* Could be CF hiding as standard ATA */ - if (ata_id_major_version(id) >= 3 && - id[ATA_ID_COMMAND_SET_1] != 0xFFFF && - (id[ATA_ID_COMMAND_SET_1] & (1 << 2))) + /* + * CF specs don't require specific value in the word 0 anymore and yet + * they forbid to report the ATA version in the word 80 and require the + * CFA feature set support to be indicated in the word 83 in this case. + * Unfortunately, some cards only follow either of this requirements, + * and while those that don't indicate CFA feature support need some + * sort of quirk list, it seems impractical for the ones that do... + */ + if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004) return 1; return 0; } |