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Fri, 21 Aug 2020 16:14:05 +0000 (GMT) From: =?UTF-8?q?=C5=81ukasz=20Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Andi Shyti , Mark Brown , linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: m.szyprowski@samsung.com, b.zolnierkie@samsung.com, =?UTF-8?q?=C5=81ukasz=20Stelmach?= Subject: [PATCH v2 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Fri, 21 Aug 2020 18:13:53 +0200 Message-Id: <20200821161401.11307-2-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200821161401.11307-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrPKsWRmVeSWpSXmKPExsWy7djP87pnP9nHG+w+YGyx+MdzJouNM9az Wkx9+ITNov/xa2aL8+c3sFvcPLSC0WLT42usFpd3zWGzmHF+H5NF48eb7BZrj9xld+D2uL7k E7PHplWdbB6bl9R79G1ZxejxeZNcAGsUl01Kak5mWWqRvl0CV8atz/4Fp9grtm07ytbAuJCt i5GTQ0LAROLjjF/sXYxcHEICKxgl1uzZzgjhfGGUOHFnKQuE85lRYsX6zewwLZs67zNBJJYz SizuXQ42S0jgOaPE/WPaIDabgKNE/9ITrCBFIgITmCQennsDVsQsUCrRs/MQmC0skCyxbuNe oEkcHCwCqhK/V/mDhHkFrCX613ezQiyTl2hfvh2snFPARuL4pSZWiBpBiZMzn7CA2PwCWhJr mq6zQIyXl2jeOpsZZK+EwCV2ibXHpkENcpH4v+giM4QtLPHq+Baob2Qk/u+cD3aDhEC9xORJ ZhC9PYwS2+b8YIGosZa4c+4XG0gNs4CmxPpd+hBhR4mnU+azQ7TySdx4KwhxAp/EpG3TmSHC vBIdbUIQ1SoS6/r3QA2Ukuh9tYJxAqPSLCTPzELywCyEXQsYmVcxiqeWFuempxYb5aWW6xUn 5haX5qXrJefnbmIEJqPT/45/2cG460/SIUYBDkYlHt4fh+zjhVgTy4orcw8xSnAwK4nwOp09 HSfEm5JYWZValB9fVJqTWnyIUZqDRUmc13jRy1ghgfTEktTs1NSC1CKYLBMHp1QDI6f9xssi L3VclsY7x05beUNJ9q/smbbveZ9Msuqlju3qy3ke1GSwO7df/uV6NU5Zdr6FS7XVRRsOL5vh 3id9dy3/8x+xc5bUVcytezVzb1RfosD5tp/BEy/m9+m+6fmfGzf91p2IboV3z1yNllpm+AbY xm6qmeYfH2imau1+y16Aj1/a7N0DJZbijERDLeai4kQAxWUMEkIDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPIsWRmVeSWpSXmKPExsVy+t/xu7pnP9nHG9x4xWux+MdzJouNM9az Wkx9+ITNov/xa2aL8+c3sFvcPLSC0WLT42usFpd3zWGzmHF+H5NF48eb7BZrj9xld+D2uL7k E7PHplWdbB6bl9R79G1ZxejxeZNcAGuUnk1RfmlJqkJGfnGJrVK0oYWRnqGlhZ6RiaWeobF5 rJWRqZK+nU1Kak5mWWqRvl2CXsatz/4Fp9grtm07ytbAuJCti5GTQ0LARGJT532mLkYuDiGB pYwS/X3/GLsYOYASUhIr56ZD1AhL/LnWBVYvJPCUUeLjbH4Qm03AUaJ/6QlWkF4RgRlMEk9u TGYFSTALlEtcmvWcHcQWFkiUeDRzJivITBYBVYnfq/xBwrwC1hL967tZIebLS7Qv3w42n1PA RuL4pSZWiF3WEtsWX2aBqBeUODnzCQvIGGYBdYn184RAwvwCWhJrmq6zQGyVl2jeOpt5AqPQ LCQdsxA6ZiGpWsDIvIpRJLW0ODc9t9hQrzgxt7g0L10vOT93EyMw8rYd+7l5B+OljcGHGAU4 GJV4eH8cso8XYk0sK67MPcQowcGsJMLrdPZ0nBBvSmJlVWpRfnxRaU5q8SFGU6AvJzJLiSbn A5NCXkm8oamhuYWlobmxubGZhZI4b4fAwRghgfTEktTs1NSC1CKYPiYOTqkGxsSs4tCy9xZf WhucN/49vzW4ludujonwy4ls94RaVn5kd679scPe+d/m91tOioXr5fefjI9Skoz/OeN6zKM8 xhulsgt77rx6vDfun56s+LSUHVv+V4ds59j3O+DyZJPl/1c7zrBtvz15ou+sPPVb/FJxV35P XujypujlYW6RipT1FcWzm5l+/FZiKc5INNRiLipOBAA1fNNU0gIAAA== X-CMS-MailID: 20200821161405eucas1p1d43a5970c6a26389cd506aab5f986bc8 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20200821161405eucas1p1d43a5970c6a26389cd506aab5f986bc8 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200821161405eucas1p1d43a5970c6a26389cd506aab5f986bc8 References: <20200821161401.11307-1-l.stelmach@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This and the next patch fix issues with DMA transfers bigger than 512 bytes on Exynos3250. Without the patches such transfers fail to complete. This solution to the problem is found in the vendor kernel for ARTIK5 boards based on Exynos3250. Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 924b24441789..26c7cb79cd78 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -685,11 +685,11 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, sdd->state &= ~RXBUSY; sdd->state &= ~TXBUSY; - s3c64xx_enable_datapath(sdd, xfer, use_dma); - /* Start the signals */ s3c64xx_spi_set_cs(spi, true); + s3c64xx_enable_datapath(sdd, xfer, use_dma); + spin_unlock_irqrestore(&sdd->lock, flags); if (use_dma) -- 2.26.2