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Wed, 27 Mar 2024 02:13:42 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:74c2:3606:170b:52f3]) by smtp.gmail.com with ESMTPSA id fa31-20020a056a002d1f00b006e69cb93585sm7342911pfb.83.2024.03.27.02.13.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Mar 2024 02:13:42 -0700 (PDT) From: Chen-Yu Tsai To: Sean Wang , Linus Walleij , Matthias Brugger , AngeloGioacchino Del Regno Cc: Chen-Yu Tsai , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] pinctrl: mediatek: paris: Fix PIN_CONFIG_INPUT_SCHMITT_ENABLE readback Date: Wed, 27 Mar 2024 17:13:33 +0800 Message-ID: <20240327091336.3434141-2-wenst@chromium.org> X-Mailer: git-send-email 2.44.0.396.g6e790dbe36-goog In-Reply-To: <20240327091336.3434141-1-wenst@chromium.org> References: <20240327091336.3434141-1-wenst@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240327_021344_937178_6A5D7EE0 X-CRM114-Status: GOOD ( 14.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In the generic pin config library, readback of some options are handled differently compared to the setting of those options: the argument value is used to convey enable/disable of an option in the set path, but success or -EINVAL is used to convey if an option is enabled or disabled in the debugfs readback path. PIN_CONFIG_INPUT_SCHMITT_ENABLE is one such option. Fix the readback of the option in the mediatek-paris library, so that the debugfs dump is not showing "input schmitt enabled" for pins that don't have it enabled. Fixes: 1bea6afbc842 ("pinctrl: mediatek: Refine mtk_pinconf_get()") Signed-off-by: Chen-Yu Tsai --- drivers/pinctrl/mediatek/pinctrl-paris.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index b6bc31abd2b0..9353f78a52f0 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -193,6 +193,8 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, } err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SMT, &ret); + if (!ret) + err = -EINVAL; break; case PIN_CONFIG_DRIVE_STRENGTH: if (!hw->soc->drive_get) -- 2.44.0.396.g6e790dbe36-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel