From patchwork Thu Feb 1 12:12:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Quadros X-Patchwork-Id: 769470 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C87A16088F; Thu, 1 Feb 2024 12:12:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706789552; cv=none; b=H8Yhtzmtudn0sflidhGiJpYnn7kJKZBvRxLGLhrjZwqRMG+k2oxTODwJ+TfF1nwdarGbU+gXRpMZzqj+EhjbAjgEkVRmC4O2+kmMm58FNTIxcuZrNii9AusflXDx03ksosquDZZ5inE+FXrgZRvX10HdWdOVv42I0ajdFvju4k8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706789552; c=relaxed/simple; bh=U0KOgz6nOgOjNNhuSJI9UM8ClADua2irwTRLMiXXge0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=g3SMPx8SCp6L68FwZj2HvF+PPubKmrtw4ABnixr0NL6fSHgFhpfsGk/nyP6/N9QXwvNcuIT2rexwvJlrKkvcnkSSXTqLQ+5vknLYfhKTvqbvCLYxxtmLIefi+tnWzEHZCvbHRM92Jn4Ldvvdy+DItZErbi45fZqoCMBTWJUoZQs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=urvYrxUW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="urvYrxUW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 119FEC43399; Thu, 1 Feb 2024 12:12:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706789552; bh=U0KOgz6nOgOjNNhuSJI9UM8ClADua2irwTRLMiXXge0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=urvYrxUWsMAFZTUvGyLBQVD3pWRgURGRXvf8giZcgNy4TQ8rhNMfJPHktBC0RXDzH 288iRyPCfec97Ogu5T12whCkNPH9UtbHJpYYhZRjZnotrOZsoxHotS+5Iw1Hl5fun6 4Uhnbrb+U03wYPhQQH+CBcAoVFQIi6ezE1C3au44gThPiGc4jPe008PPoQhP76BQ2i Jn/acVTuhMClwChUy0zJEm5jPwQPcvj8e/pnXa+Ay6jIn04nAZWQslJLUpkBEVKWjn 0ZmiGwJxtYVs5Lor46tD7eMVzhJ9K1Dd0V7fSDoBAlfxM9F4PqPrWalc21jLUy8w4e o5tynXZTmYGJQ== From: Roger Quadros To: Thinh.Nguyen@synopsys.com Cc: gregkh@linuxfoundation.org, r-gunasekaran@ti.com, b-liu@ti.com, srk@ti.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros Subject: [PATCH 2/4] usb: dwc3-am62: fix error on module removal Date: Thu, 1 Feb 2024 14:12:18 +0200 Message-Id: <20240201121220.5523-3-rogerq@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240201121220.5523-1-rogerq@kernel.org> References: <20240201121220.5523-1-rogerq@kernel.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 As runtime PM is enabled, the module can be runtime suspended when .remove() is called. Do a pm_runtime_get_sync() to make sure module is active before doing any register operations. Doing a pm_runtime_put_sync() should disable the refclk so no need to disable it again. Fixes the below warning at module removel. [ 39.705310] ------------[ cut here ]------------ [ 39.710004] clk:162:3 already disabled [ 39.713941] WARNING: CPU: 0 PID: 921 at drivers/clk/clk.c:1090 clk_core_disable+0xb0/0xb8 Signed-off-by: Roger Quadros --- drivers/usb/dwc3/dwc3-am62.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-am62.c b/drivers/usb/dwc3/dwc3-am62.c index 1bfc9e67614f..600ba9cfefea 100644 --- a/drivers/usb/dwc3/dwc3-am62.c +++ b/drivers/usb/dwc3/dwc3-am62.c @@ -273,6 +273,11 @@ static void dwc3_ti_remove(struct platform_device *pdev) struct dwc3_am62 *am62 = platform_get_drvdata(pdev); u32 reg; + pm_runtime_get_sync(dev); + + device_wakeup_disable(dev); + device_set_wakeup_capable(dev, false); + of_platform_depopulate(dev); /* Clear mode valid bit */ @@ -281,7 +286,6 @@ static void dwc3_ti_remove(struct platform_device *pdev) dwc3_ti_writel(am62, USBSS_MODE_CONTROL, reg); pm_runtime_put_sync(dev); - clk_disable_unprepare(am62->usb2_refclk); pm_runtime_disable(dev); pm_runtime_set_suspended(dev); }