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From: Felix Schlepper <f3sch.git@outlook.com>
To: gregkh@linuxfoundation.org
Cc: linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org,
	Felix Schlepper <f3sch.git@outlook.com>
Subject: [PATCH v4 3/3] Staging: rtl8192e: Cleaning up error handling
Date: Thu, 23 Jun 2022 22:27:55 +0200	[thread overview]
Message-ID: <13b32131cd00a1f0b8793657a24ada71240a8350.1655975970.git.f3sch.git@outlook.com> (raw)
In-Reply-To: <cover.1655975970.git.f3sch.git@outlook.com>

Moved error handling to one common block.
This removes double checking if all txb->fragments[]
were initialized.
The original code worked fine, but this is cleaner.

Signed-off-by: Felix Schlepper <f3sch.git@outlook.com>
---
 drivers/staging/rtl8192e/rtllib_tx.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtllib_tx.c b/drivers/staging/rtl8192e/rtllib_tx.c
index 1307cf55741a..42f81b23a144 100644
--- a/drivers/staging/rtl8192e/rtllib_tx.c
+++ b/drivers/staging/rtl8192e/rtllib_tx.c
@@ -214,19 +214,19 @@ static struct rtllib_txb *rtllib_alloc_txb(int nr_frags, int txb_size,
 
 	for (i = 0; i < nr_frags; i++) {
 		txb->fragments[i] = dev_alloc_skb(txb_size);
-		if (unlikely(!txb->fragments[i])) {
-			i--;
-			break;
-		}
+		if (unlikely(!txb->fragments[i]))
+			goto err_free;
 		memset(txb->fragments[i]->cb, 0, sizeof(txb->fragments[i]->cb));
 	}
-	if (unlikely(i != nr_frags)) {
-		while (i >= 0)
-			dev_kfree_skb_any(txb->fragments[i--]);
-		kfree(txb);
-		return NULL;
-	}
+
 	return txb;
+
+err_free:
+	while (--i >= 0)
+		dev_kfree_skb_any(txb->fragments[i]);
+	kfree(txb);
+
+	return NULL;
 }
 
 static int rtllib_classify(struct sk_buff *skb, u8 bIsAmsdu)
-- 
2.36.1


  parent reply	other threads:[~2022-06-23 20:29 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-23 20:27 [PATCH v4 0/3] Staging: rtl8192e: Safer allocation and cleaner " Felix Schlepper
2022-06-23 10:05 ` [PATCH v4 1/3] Staging: rtl8192e: Use struct_size Felix Schlepper
2022-06-23 10:05 ` [PATCH v4 2/3] Staging: rtl8192e: Using kzalloc and delete memset Felix Schlepper
2022-06-23 10:05 ` [PATCH v4 3/3] Staging: rtl8192e: Cleaning up error handling Felix Schlepper
2022-06-23 20:27 ` [PATCH v4 1/3] Staging: rtl8192e: Use struct_size Felix Schlepper
2022-06-23 20:27 ` [PATCH v4 2/3] Staging: rtl8192e: Using kzalloc and delete memset Felix Schlepper
2022-06-23 20:27 ` Felix Schlepper [this message]
2022-06-23 21:20   ` [PATCH v4 3/3] Staging: rtl8192e: Cleaning up error handling Andy Shevchenko
2022-06-24  5:21     ` Dan Carpenter
2022-06-24  8:41       ` Felix Schlepper
2022-06-24 11:32         ` Greg Kroah-Hartman
     [not found] <AM9P190MB12995A5916BDAE3F2A8222CCA5B59@AM9P190MB1299.EURP190.PROD.OUTLOOK.COM>
2022-06-23 13:28 ` Felix Schlepper

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