[PATCH] KVM: arm64: remove the unnecessary function check

Subsystems: kernel virtual machine (kvm), the rest

STALE2902d

2 messages, 2 authors, 2018-10-08 · open the first message on its own page

[PATCH] KVM: arm64: remove the unnecessary function check

From: Shaokun Zhang <hidden>
Date: 2018-08-31 09:42:59

init_common_resources always return 0 and it is redundant to check the
return value, let's make it void to simplify the code.

Cc: Christoffer Dall <redacted>
Cc: Marc Zyngier <redacted>
Signed-off-by: Shaokun Zhang <redacted>
---
 virt/kvm/arm/arm.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index c92053b..66a29c9 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -1406,13 +1406,11 @@ static inline void hyp_cpu_pm_exit(void)
 }
 #endif
 
-static int init_common_resources(void)
+static void init_common_resources(void)
 {
 	/* set size of VMID supported by CPU */
 	kvm_vmid_bits = kvm_get_vmid_bits();
 	kvm_info("%d-bit VMID\n", kvm_vmid_bits);
-
-	return 0;
 }
 
 static int init_subsystems(void)
@@ -1655,9 +1653,7 @@ int kvm_arch_init(void *opaque)
 		}
 	}
 
-	err = init_common_resources();
-	if (err)
-		return err;
+	init_common_resources();
 
 	in_hyp_mode = is_kernel_in_hyp_mode();
 
-- 
2.7.4

[PATCH] KVM: arm64: remove the unnecessary function check

From: Marc Zyngier <hidden>
Date: 2018-10-08 16:18:18

On 31/08/18 10:42, Shaokun Zhang wrote:
quoted hunk
init_common_resources always return 0 and it is redundant to check the
return value, let's make it void to simplify the code.

Cc: Christoffer Dall <redacted>
Cc: Marc Zyngier <redacted>
Signed-off-by: Shaokun Zhang <redacted>
---
  virt/kvm/arm/arm.c | 8 ++------
  1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index c92053b..66a29c9 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -1406,13 +1406,11 @@ static inline void hyp_cpu_pm_exit(void)
  }
  #endif
  
-static int init_common_resources(void)
+static void init_common_resources(void)
  {
  	/* set size of VMID supported by CPU */
  	kvm_vmid_bits = kvm_get_vmid_bits();
  	kvm_info("%d-bit VMID\n", kvm_vmid_bits);
-
-	return 0;
  }
  
  static int init_subsystems(void)
@@ -1655,9 +1653,7 @@ int kvm_arch_init(void *opaque)
  		}
  	}
  
-	err = init_common_resources();
-	if (err)
-		return err;
+	init_common_resources();
  
  	in_hyp_mode = is_kernel_in_hyp_mode();
  
Although I agree this looks pretty superfluous at the moment, I'd rather 
keep init_common_resources as it is at the moment, as we may well end-up 
with more stuff in it, which could fail.

Another possibility would be to merge everything in init_subsystems, but 
that'd require careful investigation, specially with the stuff that is 
currently pending for 4.20.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...
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