From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 24 Apr 2024 08:41:56 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rzWKK-00EONH-19 for lore@lore.pengutronix.de; Wed, 24 Apr 2024 08:41:56 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rzWKI-0000Xx-Tz for lore@pengutronix.de; Wed, 24 Apr 2024 08:41:56 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mGd5S73/xqdaUzVfy8bDql4ON6TE3YBvMDV9rLAy55g=; b=IgI0cObz0eKPxxQfOxnmkmovbn WXNVyD0I5HWf6hO81ez8G1NaaTHyA6C7P5+sK0XDKCkkHk8fJQ3/Ux0rzcNeFyt14/OV51uRQYIsT JuwmmeO4JwV0uMP3CjUHFclMNDTMFepXX8P/kyFBdZTgOp/hBpDZkLeCABtynH0pigplmFbGIdvEx h+2JOeV3dJFYbmUE58gCI4WjgKOSJeMDKITzy0UwKJJf+AFbFqdGCr9hKbwtIJg9LHXwZ91vIQHhK aLrPe9XVqPgIYKPWt8OPNCUgYIoGeIsC/+5bXhl7SwGW7GRbuEZe/tFPu/4lbCMm/ZmlvnEpxK/QG 9uNwUfyQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzWJc-00000002v6H-3DcC; Wed, 24 Apr 2024 06:41:12 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzWJW-00000002uzc-2O8X for barebox@lists.infradead.org; Wed, 24 Apr 2024 06:41:10 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rzWJT-0008BX-Ka; Wed, 24 Apr 2024 08:41:03 +0200 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rzWJT-00E1yb-5e; Wed, 24 Apr 2024 08:41:03 +0200 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1rzWJT-00F8kt-0I; Wed, 24 Apr 2024 08:41:03 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Enrico Scholz , Ahmad Fatoum Date: Wed, 24 Apr 2024 08:40:38 +0200 Message-Id: <20240424064058.3608016-4-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240424064058.3608016-1-a.fatoum@pengutronix.de> References: <20240424064058.3608016-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240423_234106_702457_370FF105 X-CRM114-Status: UNSURE ( 8.41 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.4 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH master 03/23] dma: add definition for dma_zalloc X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) For use by functions that want a zeroed buffer for DMA use, implement dma_zalloc(). Having this in a single place instead of open-coding makes it easier in future to possibly optimize zeroing of the buffer and makes follow-up changes more concise. Signed-off-by: Ahmad Fatoum --- drivers/dma/map.c | 11 +++++++++++ include/dma.h | 6 ++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/dma/map.c b/drivers/dma/map.c index ed7d3b68ffb1..e2656a27f183 100644 --- a/drivers/dma/map.c +++ b/drivers/dma/map.c @@ -7,6 +7,17 @@ void *dma_alloc(size_t size) return xmemalign(DMA_ALIGNMENT, ALIGN(size, DMA_ALIGNMENT)); } +void *dma_zalloc(size_t size) +{ + void *buf; + + buf = dma_alloc(size); + if (buf) + memset(buf, 0x00, size); + + return buf; +} + void dma_sync_single_for_cpu(struct device *dev, dma_addr_t address, size_t size, enum dma_data_direction dir) { diff --git a/include/dma.h b/include/dma.h index 0b77949eaf05..a69072280bd5 100644 --- a/include/dma.h +++ b/include/dma.h @@ -23,11 +23,17 @@ #ifdef CONFIG_HAS_DMA void *dma_alloc(size_t size); +void *dma_zalloc(size_t size); #else static inline void *dma_alloc(size_t size) { return malloc(size); } + +static inline void *dma_zalloc(size_t size) +{ + return calloc(size, 1); +} #endif static inline void dma_free(void *mem) -- 2.39.2