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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=5q5HrJN5z01eX+XAG2EfKItHnqLG5Bo1fOvwGUnV4O4=; b=oVKqj1qxGhVN9ixr6TLSsC4ZBO UTD1MZ1POYG3KI27eIMLMFxYbxzslShIpA6YWVrJkGi8+wWJ/wcVjvI1+Jf302nsbpn08IP0HnrjG oh9pK+zmvzVkSIE1LmiCYRQEMg/n7BKDDFN1GhirqNtUZZY85nV7dWg7yr93fsfot42jaRm2mqSn+ wA3i/zh7pUzR0TP8bgsZsoHOwBQn2dWZ41mvNoesxsAdL31ytt8u53ohsynd3SOTknscoWtbi7kQX eUTXIk0RVW11sAtm1oHi0qiO2SdAZ7zV+zvHAQY6D/M0Zv5t6bRmqKI4wJIkqLx4KZbsVyYpCrClV /+yGg5Kg==; From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Cc: Christoph Hellwig , Marek Szyprowski , Robin Murphy , Stephen Bates , Martin Oliveira , Logan Gunthorpe Date: Thu, 15 Jul 2021 10:45:43 -0600 Message-Id: <20210715164544.6827-16-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> References: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, sbates@raithlin.com, martin.oliveira@eideticom.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on ale.deltatee.com X-Spam-Level: X-Spam-Status: No, score=-6.7 required=5.0 tests=ALL_TRUSTED,BAYES_00, MYRULES_NO_TEXT autolearn=no autolearn_force=no version=3.4.2 Subject: [PATCH v1 15/16] dma-mapping: return error code from dma_dummy_map_sg() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) X-ZohoMail-DKIM: pass (identity @deltatee.com) X-ZM-MESSAGEID: 1626367604310100003 Content-Type: text/plain; charset="utf-8" From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. The only errno to return is -ENODEV in the case when DMA is not supported. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe --- kernel/dma/dummy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/dma/dummy.c b/kernel/dma/dummy.c index eacd4c5b10bf..ae9abebed0c4 100644 --- a/kernel/dma/dummy.c +++ b/kernel/dma/dummy.c @@ -22,7 +22,7 @@ static int dma_dummy_map_sg(struct device *dev, struct sc= atterlist *sgl, int nelems, enum dma_data_direction dir, unsigned long attrs) { - return 0; + return -ENODEV; } =20 static int dma_dummy_supported(struct device *hwdev, u64 mask) --=20 2.20.1