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authorDexuan Cui <decui@microsoft.com>2019-09-06 02:01:15 +0300
committerSasha Levin <sashal@kernel.org>2019-09-06 21:52:44 +0300
commitdba61cda30469a6c4fed0f8d5bf2b6001ca80a51 (patch)
treeeb32b786f2cca3575d7455463d8b3a5b503d6445 /drivers/hv/hyperv_vmbus.h
parent345f0254e5b2f4090e4a00ebc996e07e9bdcd070 (diff)
downloadlinux-dba61cda30469a6c4fed0f8d5bf2b6001ca80a51.tar.xz
Drivers: hv: vmbus: Break out synic enable and disable operations
Break out synic enable and disable operations into separate hv_synic_disable_regs() and hv_synic_enable_regs() functions for use by a later patch to support hibernation. There is no functional change except the unnecessary check "if (sctrl.enable != 1) return -EFAULT;" which is removed, because when we're in hv_synic_cleanup(), we're absolutely sure sctrl.enable must be 1. Signed-off-by: Dexuan Cui <decui@microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hv/hyperv_vmbus.h')
-rw-r--r--drivers/hv/hyperv_vmbus.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 362e70e9d145..26ea161a6876 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -171,8 +171,10 @@ extern int hv_synic_alloc(void);
extern void hv_synic_free(void);
+extern void hv_synic_enable_regs(unsigned int cpu);
extern int hv_synic_init(unsigned int cpu);
+extern void hv_synic_disable_regs(unsigned int cpu);
extern int hv_synic_cleanup(unsigned int cpu);
/* Interface */