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Fri, 2 Oct 2020 12:22:51 +0000 (GMT) From: =?UTF-8?q?=C5=81ukasz=20Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , 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: Marek Szyprowski , =?UTF-8?q?Bart=C5=82omiej=20=C5=BBo=C5=82nierkiewicz?= , =?UTF-8?q?=C5=81ukasz=20Stelmach?= Subject: [PATCH v3 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Fri, 2 Oct 2020 14:22:35 +0200 Message-Id: <20201002122243.26849-2-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201002122243.26849-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA02SfSzUcRzH+97v7vf73eX0c5TPsGxXRiYy0m+dWay2s7ZW81+tuPgN5bA7 j63mIcvDiBjpaDURs4Sj81Sqy0OXcaN5KrYa5rElh2Qodz+W/16f7/v9/jxsXxITtfFsyPDI GEYRKYsQ4wKuputP3/ES2/jAEyOGU/SztWkOXV9cy6MLv0/idO7EPEbr9XUEPaqtQrR6YohH f24txelifTuHTvk1StA1HeMEXd26gc6YSYfLlzBpi2qckKqrM3FpQ3mS9H5jNZIa1Icv4pcF 3iFMRHgco3DzCRKETfZGRE8RCWkLQ7xk9AbPQnwSKE/IKE3hZCEBKaKqECxOjCK2WEaw2rmx oxgQ6Ob7OLuRwcIMnpFFVCWClUxr1jSNYKzrp0nAKV/IrfjIMwpWVBMHHhj0XGOBUZ0IGr4N co0uSyoYphZGTcylHKBdM0gYWUhJ4PHqh50N7SG9ssnEfMobdGUanPVYgO7RpCl7gHKGF6nD Jsa2/XdflWDGYUB9IWA4bZrHNjoLm1tdiGVLmOtuJFi2g56C7O0wuc1JUJDvxWazEWhK17is RwJjfeu40YNRx6C21Y199oW3/YsYGzWHkR8W7ArmkK95uPMshIx7ItZ9FF7mvt5paAM5c1Uo D4lVe45R7TlA9X/WU4RVI2smVikPZZTukUy8q1ImV8ZGhroGR8nVaPtL9Wx1LzWjlYHrWkSR SGwmDNPGBop4sjhlolyLgMTEVkK/3p5rImGILPEWo4gKVMRGMEotsiW5YmuhR9nsVREVKoth bjJMNKPYVTkk3yYZXVq3H/ztoOPY1wfchiCv8P5l/o1zG2NDnoUDHRfy7Tclqe80FlPZHF16 Y2+2ZdFzt+Hmg0U9S5IAqTnusvrYazbEx/+K7WZAXkVf/IxHh4HABKF2uOr9X8dP5+MmT+4f kTglNNc5S7wPtTj6tbkMlPrXfL1zpMnn9L70J7kzOU5irjJM5u6MKZSyf7ikiz9OAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7qzpcvjDSaeUbBY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DLeHI2p+Ape0XLm2usDYx72boYOTkkBEwk rk7tYO1i5OIQEljKKHF95VkghwMoISWxcm46RI2wxJ9rXWD1QgJPGSVudZSD2GwCjhL9S0+A 9YoI7GeSuHThPguIwyxwmFHi8rp1TCBVwgKJEo+//AGzWQRUJfZtu8oOYvMKWEvM/XYY6gp5 ifbl28FsTgEbiZOLtkFts5Zo/TiXFaJeUOLkzCcsIMcxC6hLrJ8nBBLmF9CSWNN0nQXEZgYa 07x1NvMERqFZSDpmIXTMQlK1gJF5FaNIamlxbnpusaFecWJucWleul5yfu4mRmBEbjv2c/MO xksbgw8xCnAwKvHwChwojRdiTSwrrsw9xCjBwawkwut09nScEG9KYmVValF+fFFpTmrxIUZT oDcnMkuJJucDk0VeSbyhqaG5haWhubG5sZmFkjhvh8DBGCGB9MSS1OzU1ILUIpg+Jg5OqQZG 7oNNc+cb+pyfEXbe5OUKtqg0u2qlS3r3U6+xLl6yaFr4Dq/yb4dMO7e8PXfpI88Z+2Vtr/Oq Q18YLllRvifxjMr3DRL3WM9NjDp529tCMerAud3yFr4/qr7MOnGzNHf/FF2vDqOzeTsmsucs bTvV++tsW4wB4zSJtUKtSq5lT5yv+omsnhD2UImlOCPRUIu5qDgRAL7qImTeAgAA X-CMS-MailID: 20201002122251eucas1p26b59b6a574f78200d0c696dd1aacc140 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20201002122251eucas1p26b59b6a574f78200d0c696dd1aacc140 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201002122251eucas1p26b59b6a574f78200d0c696dd1aacc140 References: <20201002122243.26849-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org 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. Reviewed-by: Krzysztof Kozlowski 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