| commit | e18086d69cb5bb864749a0637f6ac573aa89d5ea | |
| author | Mark Lord <liml@rtr.ca> | |
| Thu, 19 Mar 2009 17:32:21 +0000 (19 13:32 -0400) | ||
| committer | Jeff Garzik <jgarzik@redhat.com> | |
| Wed, 25 Mar 2009 02:40:05 +0000 (24 22:40 -0400) | ||
| tree | 2d3e541787eb30743693dd45c96ebabb9be0f0a6 | treesnapshot (tar.gz zip) |
| parent | 000b344f4ca7828ee43940255c8bbb32e2c7dbec | commitdiff |
[libata] More robust parsing for IDENTIFY DEVICE multi_count field
Make libata more robust when parsing the multi_count
field from a drive's identify data. This prevents us from
attempting to use dubious multi_count values ad infinitum.
Reset dev->multi_count to zero and reprobe it each time
through this routine, as it can change on device reset.
Also ensure that the reported "maximum" value is valid
and is a power of two, and that the reported "count" value
is valid and also a power of two. And that the "count"
value is not greater than the "maximum" value.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Make libata more robust when parsing the multi_count
field from a drive's identify data. This prevents us from
attempting to use dubious multi_count values ad infinitum.
Reset dev->multi_count to zero and reprobe it each time
through this routine, as it can change on device reset.
Also ensure that the reported "maximum" value is valid
and is a power of two, and that the reported "count" value
is valid and also a power of two. And that the "count"
value is not greater than the "maximum" value.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| drivers/ata/libata-core.c | diffblobblamehistory |