linux-kernel - [PATCH 1/1] pstore: remove unnecessary oom message

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Date:   Thu, 17 Jun 2021 17:10:54 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Kees Cook <keescook@...omium.org>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH 1/1] pstore: remove unnecessary oom message

Fixes scripts/checkpatch.pl warning:
WARNING: Possible unnecessary 'out of memory' message

Remove it can help us save a bit of memory.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 fs/pstore/platform.c |  4 +---
 fs/pstore/ram_core.c | 15 ++++-----------
 2 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index b9614db48b1d..752c2338af6c 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -752,10 +752,8 @@ void pstore_get_backend_records(struct pstore_info *psi,
 		int rc;
 
 		record = kzalloc(sizeof(*record), GFP_KERNEL);
-		if (!record) {
-			pr_err("out of memory creating record\n");
+		if (!record)
 			break;
-		}
 		pstore_record_init(record, psi);
 
 		record->size = psi->read(record);
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c
index fe5305028c6e..7da890505025 100644
--- a/fs/pstore/ram_core.c
+++ b/fs/pstore/ram_core.c
@@ -301,10 +301,8 @@ void persistent_ram_save_old(struct persistent_ram_zone *prz)
 	if (!prz->old_log) {
 		persistent_ram_ecc_old(prz);
 		prz->old_log = kmalloc(size, GFP_KERNEL);
-	}
-	if (!prz->old_log) {
-		pr_err("failed to allocate buffer\n");
-		return;
+		if (!prz->old_log)
+			return;
 	}
 
 	prz->old_log_size = size;
@@ -429,11 +427,8 @@ static void *persistent_ram_vmap(phys_addr_t start, size_t size,
 	}
 
 	pages = kmalloc_array(page_count, sizeof(struct page *), GFP_KERNEL);
-	if (!pages) {
-		pr_err("%s: Failed to allocate array for %u pages\n",
-		       __func__, page_count);
+	if (!pages)
 		return NULL;
-	}
 
 	for (i = 0; i < page_count; i++) {
 		phys_addr_t addr = page_start + i * PAGE_SIZE;
@@ -578,10 +573,8 @@ struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size,
 	int ret = -ENOMEM;
 
 	prz = kzalloc(sizeof(struct persistent_ram_zone), GFP_KERNEL);
-	if (!prz) {
-		pr_err("failed to allocate persistent ram zone\n");
+	if (!prz)
 		goto err;
-	}
 
 	/* Initialize general buffer state. */
 	raw_spin_lock_init(&prz->buffer_lock);
-- 
2.25.1