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ptp: vmclock: Set driver data before its usage

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If vmclock_ptp_register() fails during probing, vmclock_remove() is
called to clean up the ptp clock and misc device.
It uses dev_get_drvdata() to access the vmclock state.
However the driver data is not yet set at this point.

Assign the driver data earlier.

Fixes: 205032724226 ("ptp: Add support for the AMZNC10C 'vmclock' device")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Thomas Weißschuh 2025-02-07 10:39:03 +01:00 committed by Paolo Abeni
parent 7b07b04025
commit f7d07cd4f7
1 changed files with 2 additions and 2 deletions
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4
drivers/ptp/ptp_vmclock.c
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@ -525,6 +525,8 @@ static int vmclock_probe(struct platform_device *pdev)
goto out;
}
dev_set_drvdata(dev, st);
if (le32_to_cpu(st->clk->magic) != VMCLOCK_MAGIC ||
le32_to_cpu(st->clk->size) > resource_size(&st->res) ||
le16_to_cpu(st->clk->version) != 1) {
@ -588,8 +590,6 @@ static int vmclock_probe(struct platform_device *pdev)
(st->miscdev.minor && st->ptp_clock) ? ", " : "",
st->ptp_clock ? "PTP" : "");
dev_set_drvdata(dev, st);
out:
return ret;
}