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| author |   Felix Blyakher <felixb@sgi.com> | 2009-02-09 09:34:45 -0600 |
|---|---|---|
| committer | Felix Blyakher <felixb@sgi.com> | 2009-02-09 09:34:45 -0600 |
| commit | d41d4113f49e16bfab02eff0248282200be21807 (patch) | |
| tree | ae84803c22a09f138023ef62de73712f324bc62d /include/linux/ata.h | |
| parent | xfs: Update maintainers (diff) | |
| parent | mm: fix error case in mlock downgrade reversion (diff) | |
| download | linux-dev-d41d4113f49e16bfab02eff0248282200be21807.tar.xz linux-dev-d41d4113f49e16bfab02eff0248282200be21807.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
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 a53318b8cbd0..08a86d5cdf1b 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; } |