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misc: Remove manual implementation of is_power_of_two

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As clippy of rust-toolchain version 1.83.0-beta.1 suggests, remove
manual implementation of `is_power_of_two` to improve readability.

Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
This commit is contained in:
Ruoqing He 2024-10-18 17:28:49 +08:00 committed by Rob Bradford
parent 6164aa0885
commit b41daddce1
3 changed files with 4 additions and 4 deletions
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2
block/src/qcow/qcow_raw_file.rs
View File

@ -24,7 +24,7 @@ impl QcowRawFile {
/// Creates a `QcowRawFile` from the given `File`, `None` is returned if `cluster_size` is not /// Creates a `QcowRawFile` from the given `File`, `None` is returned if `cluster_size` is not
/// a power of two. /// a power of two.
pub fn from(file: RawFile, cluster_size: u64) -> Option<Self> { pub fn from(file: RawFile, cluster_size: u64) -> Option<Self> {
if cluster_size.count_ones() != 1 { if !cluster_size.is_power_of_two() {
return None; return None;
} }
Some(QcowRawFile { Some(QcowRawFile {

4
pci/src/configuration.rs
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@ -734,7 +734,7 @@ impl PciConfiguration {
return Err(Error::BarInUse(bar_idx)); return Err(Error::BarInUse(bar_idx));
} }
if config.size.count_ones() != 1 { if !config.size.is_power_of_two() {
return Err(Error::BarSizeInvalid(config.size)); return Err(Error::BarSizeInvalid(config.size));
} }
@ -806,7 +806,7 @@ impl PciConfiguration {
return Err(Error::RomBarInUse(bar_idx)); return Err(Error::RomBarInUse(bar_idx));
} }
if config.size.count_ones() != 1 { if !config.size.is_power_of_two() {
return Err(Error::RomBarSizeInvalid(config.size)); return Err(Error::RomBarSizeInvalid(config.size));
} }

2
vm-virtio/src/queue.rs
View File

@ -178,7 +178,7 @@ pub mod testing {
// We try to make sure things are aligned properly :-s // We try to make sure things are aligned properly :-s
pub fn new(start: GuestAddress, mem: &'a GuestMemoryMmap, qsize: u16) -> Self { pub fn new(start: GuestAddress, mem: &'a GuestMemoryMmap, qsize: u16) -> Self {
// power of 2? // power of 2?
assert!(qsize > 0 && qsize & (qsize - 1) == 0); assert!(qsize.is_power_of_two());
let mut dtable = Vec::with_capacity(qsize as usize); let mut dtable = Vec::with_capacity(qsize as usize);