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ptp: Don't print an error if ptp_kvm is not supported

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Commit 300bb1fe76 ("ptp: arm/arm64: Enable ptp_kvm for arm/arm64")
enable ptp_kvm support for ARM platforms and for any ARM platform that
does not support this, the following error message is displayed ...

 ERR KERN fail to initialize ptp_kvm

For platforms that do not support ptp_kvm this error is a bit misleading
and so fix this by only printing this message if the error returned by
kvm_arch_ptp_init() is not -EOPNOTSUPP. Note that -EOPNOTSUPP is only
returned by ARM platforms today if ptp_kvm is not supported.

Fixes: 300bb1fe76 ("ptp: arm/arm64: Enable ptp_kvm for arm/arm64")
Signed-off-by: Jon Hunter <[email protected]>
Acked-by: Richard Cochran <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
This commit is contained in:
Jon Hunter authored and Marc Zyngier committed 2021-04-20 17:17:55 +01:00
1 parent 127ce0b141
commit a86ed2cfa1
1 file changed
+2 -1
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drivers/ptp/ptp_kvm_common.c
+2 -1
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@@ -138,7 +138,8 @@ static int __init ptp_kvm_init(void)
ret = kvm_arch_ptp_init();
if (ret) {
pr_err("fail to initialize ptp_kvm");
if (ret != -EOPNOTSUPP)
pr_err("fail to initialize ptp_kvm");
return ret;
}