From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [PATCH v13 5/8] drivers: memory: add DMC driver for Exynos5422 Date: Wed, 4 Sep 2019 20:35:10 +0200 Message-ID: <20190904183510.GC12918@kozik-lap> References: <20190821104303.32079-1-l.luba@partner.samsung.com> <20190821104303.32079-6-l.luba@partner.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <20190821104303.32079-6-l.luba@partner.samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Lukasz Luba Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, mturquette@baylibre.com, sboyd@kernel.org, b.zolnierkie@samsung.com, kgene@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, cw00.choi@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, s.nawrocki@samsung.com, myungjoo.ham@samsung.com, keescook@chromium.org, tony@atomide.com, jroedel@suse.de, treding@nvidia.com, digetx@gmail.com, gregkh@linuxfoundation.org, willy.mh.wolff.ml@gmail.com List-Id: devicetree@vger.kernel.org On Wed, Aug 21, 2019 at 12:43:00PM +0200, Lukasz Luba wrote: > This patch adds driver for Exynos5422 Dynamic Memory Controller. > The driver provides support for dynamic frequency and voltage scaling > for DMC and DRAM. It supports changing timings of DRAM running with > different frequency. There is also an algorithm to calculate timigns > based on memory description provided in DT. > The patch also contains needed MAINTAINERS file update. > > Signed-off-by: Lukasz Luba > --- > MAINTAINERS | 8 + > drivers/memory/samsung/Kconfig | 13 + > drivers/memory/samsung/Makefile | 1 + > drivers/memory/samsung/exynos5422-dmc.c | 1257 +++++++++++++++++++++++ > 4 files changed, 1279 insertions(+) > create mode 100644 drivers/memory/samsung/exynos5422-dmc.c Thanks, applied... or almost. Let's fix it incrementally. You have two smatch warnings: CHECK ../drivers/memory/samsung/exynos5422-dmc.c drivers/memory/samsung/exynos5422-dmc.c:272 exynos5_init_freq_table() warn: passing devm_ allocated variable to kfree. 'dmc->opp' CHECK ../drivers/memory/jedec_ddr_data.c drivers/memory/samsung/exynos5422-dmc.c:565 exynos5_dmc_get_volt_freq() warn: passing zero to 'PTR_ERR' The second looks like false positive, but first seems to be real. You have also sparse warning to fix: ../drivers/memory/samsung/exynos5422-dmc.c:736:1: warning: symbol 'exynos5_dmc_align_init_freq' was not declared. Should it be static? Best regards, Krzysztof