]> git.baikalelectronics.ru Git - kernel.git/commit
ptp: validate the requested frequency adjustment.
authorRichard Cochran <richardcochran@gmail.com>
Sun, 27 Apr 2014 13:01:27 +0000 (15:01 +0200)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Apr 2014 17:28:43 +0000 (13:28 -0400)
commit03bf618694c04408adb3fa9f496489609a8b64cb
tree708d00e333ca4096af001a5ad2b8dfc250f254ab
parent857ee48769edbb773d004ef5e6a9bd2e777edc67
ptp: validate the requested frequency adjustment.

PTP Hardware Clock drivers specify a maximum frequency adjustment that
their clocks can accommodate. Normally, user space programs will want to
respect the advertised limits. However, no kernel or driver code checks
that the dialed frequency offset is within the bounds, and out of range
values can lead to surprising results.

This patch fixes the issue by rejecting bad values.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/ptp/ptp_clock.c