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authorJakob Koschel <jkl820.git@gmail.com>2023-05-12 14:36:10 +0300
committerKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>2023-05-13 22:15:02 +0300
commitb332af5398a3aa1a2fdd69bb6968a8f866cc39aa (patch)
treedbbeab6d014128c77916e54b28be6d2d736088ca /drivers/w1
parent0df2a5e99d0cb10a3da93fd71dd6753af5adc79f (diff)
downloadlinux-b332af5398a3aa1a2fdd69bb6968a8f866cc39aa.tar.xz
w1: Replace usage of found with dedicated list iterator variable
To move the list iterator variable into the list_for_each_entry_*() macro in the future it should be avoided to use the list iterator variable after the loop body. To *never* use the list iterator variable after the loop it was concluded to use a separate iterator variable instead of a found boolean [1]. This removes the need to use a found variable and simply checking if the variable was set, can determine if the break/goto was hit. Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ [1] Signed-off-by: Jakob Koschel <jkl820.git@gmail.com> Link: https://lore.kernel.org/r/20230509-w1-replace-usage-of-found-with-tmp-list-iterator-variable-v3-1-e07c9603fd9d@gmail.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers/w1')
-rw-r--r--drivers/w1/w1.c32
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index e16a60872226..5353cbd75126 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -821,49 +821,47 @@ int w1_slave_detach(struct w1_slave *sl)
struct w1_master *w1_search_master_id(u32 id)
{
- struct w1_master *dev;
- int found = 0;
+ struct w1_master *dev = NULL, *iter;
mutex_lock(&w1_mlock);
- list_for_each_entry(dev, &w1_masters, w1_master_entry) {
- if (dev->id == id) {
- found = 1;
- atomic_inc(&dev->refcnt);
+ list_for_each_entry(iter, &w1_masters, w1_master_entry) {
+ if (iter->id == id) {
+ dev = iter;
+ atomic_inc(&iter->refcnt);
break;
}
}
mutex_unlock(&w1_mlock);
- return (found)?dev:NULL;
+ return dev;
}
struct w1_slave *w1_search_slave(struct w1_reg_num *id)
{
struct w1_master *dev;
- struct w1_slave *sl = NULL;
- int found = 0;
+ struct w1_slave *sl = NULL, *iter;
mutex_lock(&w1_mlock);
list_for_each_entry(dev, &w1_masters, w1_master_entry) {
mutex_lock(&dev->list_mutex);
- list_for_each_entry(sl, &dev->slist, w1_slave_entry) {
- if (sl->reg_num.family == id->family &&
- sl->reg_num.id == id->id &&
- sl->reg_num.crc == id->crc) {
- found = 1;
+ list_for_each_entry(iter, &dev->slist, w1_slave_entry) {
+ if (iter->reg_num.family == id->family &&
+ iter->reg_num.id == id->id &&
+ iter->reg_num.crc == id->crc) {
+ sl = iter;
atomic_inc(&dev->refcnt);
- atomic_inc(&sl->refcnt);
+ atomic_inc(&iter->refcnt);
break;
}
}
mutex_unlock(&dev->list_mutex);
- if (found)
+ if (sl)
break;
}
mutex_unlock(&w1_mlock);
- return (found)?sl:NULL;
+ return sl;
}
void w1_reconnect_slaves(struct w1_family *f, int attach)