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Fri, 14 Apr 2023 08:46:23 -0700 (PDT) Received: from [192.168.2.177] ([207.188.167.132]) by smtp.gmail.com with ESMTPSA id n21-20020a7bc5d5000000b003e91b9a92c9sm4607383wmk.24.2023.04.14.08.46.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 14 Apr 2023 08:46:22 -0700 (PDT) Message-ID: <40cf026f-61db-2fe0-f941-bfe5c9aa20e7@gmail.com> Date: Fri, 14 Apr 2023 17:46:19 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Subject: Re: [PATCH] phy: mediatek: fix returning garbage Content-Language: en-US From: Matthias Brugger To: Tom Rix , chunkuang.hu@kernel.org, p.zabel@pengutronix.de, chunfeng.yun@mediatek.com, vkoul@kernel.org, kishon@kernel.org, angelogioacchino.delregno@collabora.com, nathan@kernel.org, ndesaulniers@google.com, granquet@baylibre.com Cc: dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev References: <20230414122253.3171524-1-trix@redhat.com> <3242b862-0e7c-b7e9-14cd-3fbcbb87ba04@gmail.com> In-Reply-To: <3242b862-0e7c-b7e9-14cd-3fbcbb87ba04@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230414_084624_885430_B9EBD5E7 X-CRM114-Status: GOOD ( 11.62 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 14/04/2023 17:43, Matthias Brugger wrote: > > > On 14/04/2023 14:22, Tom Rix wrote: >> clang reports >> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c:298:6: error: variable >>    'ret' is uninitialized when used here [-Werror,-Wuninitialized] >>          if (ret) >>              ^~~ >> ret should have been set by the preceding call to mtk_hdmi_pll_set_hw. >> >> Fixes: 45810d486bb4 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195") >> Signed-off-by: Tom Rix > > Reviewed-by: Matthias Brugger > Please also add Reported-by: Linux Kernel Functional Testing see CA+G9fYu4o0-ZKSthi7kdCjz_kFazZS-rn17Z2NPz3=1Oayr9cw@mail.gmail.com Regards, Matthias >> --- >>   drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 6 +++--- >>   1 file changed, 3 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c >> b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c >> index abfc077fb0a8..c63294e451d6 100644 >> --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c >> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c >> @@ -292,9 +292,9 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy >> *hdmi_phy, struct clk_hw *hw, >>       if (!(digital_div <= 32 && digital_div >= 1)) >>           return -EINVAL; >> -    mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low, >> -                PLL_FBKDIV_HS3, posdiv1, posdiv2, txprediv, >> -                txposdiv, digital_div); >> +    ret = mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low, >> +                  PLL_FBKDIV_HS3, posdiv1, posdiv2, txprediv, >> +                  txposdiv, digital_div); >>       if (ret) >>           return -EINVAL;