* [PATCH] asm-generic: Remove unnecessary ‘0’ values from guest_id
@ 2022-09-19 1:51 Li zeming
2022-09-19 15:33 ` Vitaly Kuznetsov
0 siblings, 1 reply; 3+ messages in thread
From: Li zeming @ 2022-09-19 1:51 UTC (permalink / raw)
To: kys, haiyangz, wei.liu; +Cc: linux-hyperv, linux-arch, linux-kernel, Li zeming
The file variable is assigned guest_id, it does not need to be initialized.
Signed-off-by: Li zeming <zeming@nfschina.com>
---
include/asm-generic/mshyperv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index c05d2ce9b6cd..cd5ce86c218a 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -108,7 +108,7 @@ static inline u64 hv_do_rep_hypercall(u16 code, u16 rep_count, u16 varhead_size,
static inline __u64 generate_guest_id(__u64 d_info1, __u64 kernel_version,
__u64 d_info2)
{
- __u64 guest_id = 0;
+ __u64 guest_id;
guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 48);
guest_id |= (d_info1 << 48);
--
2.18.2
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] asm-generic: Remove unnecessary ‘0’ values from guest_id
2022-09-19 1:51 [PATCH] asm-generic: Remove unnecessary ‘0’ values from guest_id Li zeming
@ 2022-09-19 15:33 ` Vitaly Kuznetsov
2022-09-20 1:21 ` Li zeming
0 siblings, 1 reply; 3+ messages in thread
From: Vitaly Kuznetsov @ 2022-09-19 15:33 UTC (permalink / raw)
To: Li zeming
Cc: linux-hyperv, linux-arch, linux-kernel, Li zeming, kys, haiyangz,
wei.liu
Li zeming <zeming@nfschina.com> writes:
> The file variable is assigned guest_id, it does not need to be initialized.
>
> Signed-off-by: Li zeming <zeming@nfschina.com>
> ---
> include/asm-generic/mshyperv.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
> index c05d2ce9b6cd..cd5ce86c218a 100644
> --- a/include/asm-generic/mshyperv.h
> +++ b/include/asm-generic/mshyperv.h
> @@ -108,7 +108,7 @@ static inline u64 hv_do_rep_hypercall(u16 code, u16 rep_count, u16 varhead_size,
> static inline __u64 generate_guest_id(__u64 d_info1, __u64 kernel_version,
> __u64 d_info2)
> {
> - __u64 guest_id = 0;
> + __u64 guest_id;
>
> guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 48);
> guest_id |= (d_info1 << 48);
The initializer is certainly not needed, however, if we are to do some
changes, let's be bold. Suggestions:
1) Stop using "__u64" type, "u64" is good enough.
2) Drop all the parameters from the function, both call sites look like
generate_guest_id(0, LINUX_VERSION_CODE, 0);
3) Rename the function to make it clear it's Hyper-V related,
e.g. "hv_generate_guest_id()".
...
--
Vitaly
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-09-20 1:22 UTC | newest]
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2022-09-19 1:51 [PATCH] asm-generic: Remove unnecessary ‘0’ values from guest_id Li zeming
2022-09-19 15:33 ` Vitaly Kuznetsov
2022-09-20 1:21 ` Li zeming
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