Return-path: Received: from mail-io0-f170.google.com ([209.85.223.170]:36280 "EHLO mail-io0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750870AbbLUTXN convert rfc822-to-8bit (ORCPT ); Mon, 21 Dec 2015 14:23:13 -0500 MIME-Version: 1.0 In-Reply-To: <1448948470-31111-1-git-send-email-motobud@gmail.com> References: <1448948470-31111-1-git-send-email-motobud@gmail.com> Date: Tue, 22 Dec 2015 00:53:12 +0530 Message-ID: (sfid-20151221_202316_933825_BAEC461C) Subject: Re: [PATCH] ath6kl: Use vmalloc to allocate ar->fw for api1 method From: Souptick Joarder To: Brent Taylor Cc: Kalle Valo , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, ath6kl@lists.infradead.org Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi Brent, On Tue, Dec 1, 2015 at 11:11 AM, Brent Taylor wrote: > Since commit 8437754c83351d6213c1a47ff029c1126d6042a7, ar->fw is expected to be pointing to memory allocated by vmalloc. If the api1 method (via ath6kl_fetch_fw_api1) is used to allocate memory for ar->fw, then kmemdup is used. This patch checks if the firmware being loaded is the 'fw' image, then use vmalloc, otherwise use kmalloc. > > Signed-off-by: Brent Taylor > --- > drivers/net/wireless/ath/ath6kl/init.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c > index 6ae0734..4f2b124d 100644 > --- a/drivers/net/wireless/ath/ath6kl/init.c > +++ b/drivers/net/wireless/ath/ath6kl/init.c > @@ -673,10 +673,15 @@ static int ath6kl_get_fw(struct ath6kl *ar, const char *filename, > return ret; > > *fw_len = fw_entry->size; > - *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL); > + if (&ar->fw == fw) > + *fw = vmalloc(fw_entry->size); > + else > + *fw = kmalloc(fw_entry->size, GFP_KERNEL); Why vmalloc and kmalloc both are required? can't use either vmalloc or kmalloc? > > if (*fw == NULL) > ret = -ENOMEM; > + else > + memcpy(*fw, fw_entry->data, fw_entry->size); > > release_firmware(fw_entry); > > -- > 2.6.3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -Souptick