From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: stas.yakovlev@gmail.com, kvalo@codeaurora.org,
davem@davemloft.net, kuba@kernel.org
Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH 1/2] ipw2100: Use GFP_KERNEL instead of GFP_ATOMIC in some memory allocation
Date: Wed, 22 Jul 2020 12:17:01 +0200 [thread overview]
Message-ID: <20200722101701.26126-1-christophe.jaillet@wanadoo.fr> (raw)
The call chain is:
ipw2100_pci_init_one (the probe function)
--> ipw2100_queues_allocate
--> ipw2100_tx_allocate
No lock is taken in the between.
So it is safe to use GFP_KERNEL in 'ipw2100_tx_allocate()'.
BTW, 'ipw2100_queues_allocate()' also calls 'ipw2100_msg_allocate()' which
already allocates some memory using GFP_KERNEL.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/net/wireless/intel/ipw2x00/ipw2100.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2100.c b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
index 83d2f2acc0de..699deca745a2 100644
--- a/drivers/net/wireless/intel/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
@@ -4430,7 +4430,7 @@ static int ipw2100_tx_allocate(struct ipw2100_priv *priv)
priv->tx_buffers = kmalloc_array(TX_PENDED_QUEUE_LENGTH,
sizeof(struct ipw2100_tx_packet),
- GFP_ATOMIC);
+ GFP_KERNEL);
if (!priv->tx_buffers) {
bd_queue_free(priv, &priv->tx_queue);
return -ENOMEM;
--
2.25.1
next reply other threads:[~2020-07-22 10:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 10:17 Christophe JAILLET [this message]
2020-08-02 15:19 ` [PATCH 1/2] ipw2100: Use GFP_KERNEL instead of GFP_ATOMIC in some memory allocation Kalle Valo
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