tree 6db1701350102a4ee9aa19aac366e166db475a48
parent 9e5b1b12226d5a501fbc6706ca090e00d18a01ad
author Valdis Kletnieks <valdis.kletnieks@vt.edu> 1224133475 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1224181309 -0700

tpm: work around bug in Broadcom BCM0102 chipset

Patch tpm-correct-tpm-timeouts-to-jiffies-conversion reveals a bug in the
Broadcom BCM0102 TPM chipset used in the Dell Latitude D820 - although
most of the timeouts are returned in usecs as per the spec, one is
apparently returned in msecs, which results in a too-small value leading
to a timeout when the code treats it as usecs.  To prevent a regression,
we check for the known too-short value and adjust it to a value that makes
things work.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Marcin Obara <marcin_obara@users.sourceforge.net>
Cc: Marcel Selhorst <tpm@selhorst.net>
Cc: Kylene Jo Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>