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net: ethernet: renesas: rcar_gen4_ptp: Use lockdep to verify internal usage

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Instead of a having a comment that the lock must be held when calling
the internal helper add a lockdep check to enforce it.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250908154426.3062861-4-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Niklas Söderlund
2025-09-08 17:44:26 +02:00
committed by Jakub Kicinski
parent 492d816b17
commit fd2b2429fb
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/renesas/rcar_gen4_ptp.c
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@@ -42,12 +42,13 @@ static int rcar_gen4_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
return 0;
}
/* Caller must hold the lock */
static void _rcar_gen4_ptp_gettime(struct ptp_clock_info *ptp,
struct timespec64 *ts)
{
struct rcar_gen4_ptp_private *ptp_priv = ptp_to_priv(ptp);
lockdep_assert_held(&ptp_priv->lock);
ts->tv_nsec = ioread32(ptp_priv->addr + PTPGPTPTM00_REG);
ts->tv_sec = ioread32(ptp_priv->addr + PTPGPTPTM10_REG) |
((s64)ioread32(ptp_priv->addr + PTPGPTPTM20_REG) << 32);