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ptp: kvm: x86: Return EOPNOTSUPP instead of ENODEV from kvm_arch_ptp_init()

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The caller, ptp_kvm_init(), emits a warning if kvm_arch_ptp_init() exits
with any error which is not EOPNOTSUPP:

	"fail to initialize ptp_kvm"

Replace ENODEV with EOPNOTSUPP to avoid this spurious warning,
aligning with the ARM implementation.

Fixes: a86ed2cfa1 ("ptp: Don't print an error if ptp_kvm is not supported")
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20241203-kvm_ptp-eopnotsuppp-v2-1-d1d060f27aa6@weissschuh.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Thomas Weißschuh 2024-12-03 18:09:55 +01:00 committed by Jakub Kicinski
parent bd0c907043
commit 5e7aa97c7a
1 changed files with 3 additions and 3 deletions
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6
drivers/ptp/ptp_kvm_x86.c
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@ -26,7 +26,7 @@ int kvm_arch_ptp_init(void)
long ret; long ret;
if (!kvm_para_available()) if (!kvm_para_available())
return -ENODEV; return -EOPNOTSUPP;
if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) { if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) {
p = alloc_page(GFP_KERNEL | __GFP_ZERO); p = alloc_page(GFP_KERNEL | __GFP_ZERO);
@ -46,14 +46,14 @@ int kvm_arch_ptp_init(void)
clock_pair_gpa = slow_virt_to_phys(clock_pair); clock_pair_gpa = slow_virt_to_phys(clock_pair);
if (!pvclock_get_pvti_cpu0_va()) { if (!pvclock_get_pvti_cpu0_va()) {
ret = -ENODEV; ret = -EOPNOTSUPP;
goto err; goto err;
} }
ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, clock_pair_gpa, ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, clock_pair_gpa,
KVM_CLOCK_PAIRING_WALLCLOCK); KVM_CLOCK_PAIRING_WALLCLOCK);
if (ret == -KVM_ENOSYS) { if (ret == -KVM_ENOSYS) {
ret = -ENODEV; ret = -EOPNOTSUPP;
goto err; goto err;
} }