e1000e: fix numeric overflow in phc settime method

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The PTP Hardware Clock settime function in the e1000e driver
computes nanoseconds from a struct timespec. The code converts the
seconds field .tv_sec by multiplying it with NSEC_PER_SEC. However,
both operands are of type long, resulting in an unintended overflow.
The patch fixes the issue by using the helper function from time.h.

CC: stable <stable@vger.kernel.org>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

...

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Richard Cochran 2013-04-23 01:56:34 +00:00 • committed by Jeff Kirsher

parent 3a4e0d6a95

commit 73e3dd6b45

1 changed files with 1 additions and 2 deletions

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drivers/net/ethernet/intel/e1000e/ptp.c

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