Re: [PATCH -next] crypto: hisilicon: move label err to #ifdef CONFIG_NUMA

From: Dan Carpenter
Date: Tue Nov 05 2019 - 09:56:46 EST


The ifdefs in this function were pretty ugly before but this makes it
super extra ugly... :/ There are bunch of ways to fix this nicely
but my favourite is this:

Feel free to give me a Suggested-by tag.

diff --git a/drivers/crypto/hisilicon/zip/zip_main.c b/drivers/crypto/hisilicon/zip/zip_main.c
index 255b63cfbe1d..1b22f0ead56e 100644
--- a/drivers/crypto/hisilicon/zip/zip_main.c
+++ b/drivers/crypto/hisilicon/zip/zip_main.c
@@ -105,20 +105,27 @@ static void free_list(struct list_head *head)
struct hisi_zip *find_zip_device(int node)
{
struct hisi_zip *ret = NULL;
-#ifdef CONFIG_NUMA
struct hisi_zip_resource *res, *tmp;
struct hisi_zip *hisi_zip;
struct list_head *n;
struct device *dev;
LIST_HEAD(head);

+ if (!IS_ENABLED(CONFIG_NUMA)) {
+ mutex_lock(&hisi_zip_list_lock);
+ ret = list_first_entry(&hisi_zip_list, struct hisi_zip, list);
+ mutex_unlock(&hisi_zip_list_lock);
+ return ret;
+ }
+
mutex_lock(&hisi_zip_list_lock);

list_for_each_entry(hisi_zip, &hisi_zip_list, list) {
res = kzalloc(sizeof(*res), GFP_KERNEL);
- if (!res)
- goto err;
-
+ if (!res) {
+ ret = NULL;
+ goto done;
+ }
dev = &hisi_zip->qm.pdev->dev;
res->hzip = hisi_zip;
res->distance = node_distance(dev->numa_node, node);
@@ -140,20 +147,10 @@ struct hisi_zip *find_zip_device(int node)
}
}

+done:
free_list(&head);
-#else
- mutex_lock(&hisi_zip_list_lock);
-
- ret = list_first_entry(&hisi_zip_list, struct hisi_zip, list);
-#endif
mutex_unlock(&hisi_zip_list_lock);
-
return ret;
-
-err:
- free_list(&head);
- mutex_unlock(&hisi_zip_list_lock);
- return NULL;
}

struct hisi_zip_hw_error {