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i40e: use correct length for strncpy

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[ Upstream commit 7eb74ff891 ]

Caught by GCC 8. When we provide a length for strncpy, we should not
include the terminating null. So we must tell it one less than the size
of the destination buffer.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mitch Williams
2018-08-20 08:12:30 -07:00
committed by Greg Kroah-Hartman
parent a90fcbdb9b
commit 015fc52519
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/intel/i40e/i40e_ptp.c
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@@ -694,7 +694,8 @@ static long i40e_ptp_create_clock(struct i40e_pf *pf)
if (!IS_ERR_OR_NULL(pf->ptp_clock))
return 0;
strncpy(pf->ptp_caps.name, i40e_driver_name, sizeof(pf->ptp_caps.name));
strncpy(pf->ptp_caps.name, i40e_driver_name,
sizeof(pf->ptp_caps.name) - 1);
pf->ptp_caps.owner = THIS_MODULE;
pf->ptp_caps.max_adj = 999999999;
pf->ptp_caps.n_ext_ts = 0;