From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx48bEsTplyESKCUYABPyolUzcV4ecCdft1G+4GVbPmpMX2HJI9oc9vttuyeOE89kAmNS6Cth ARC-Seal: i=1; a=rsa-sha256; t=1522168755; cv=none; d=google.com; s=arc-20160816; b=yhYrx+cfCQvBz5hIM/Z6h16PZPVetYs9GFnEly+7LU5GqK4ATO4xkjRhxlW6AgfNVP RqQoB23BEwNgN452QeJ0hjiF1oRGHdfeseq27+dOvKutWLCVJLicnbnAhxPXuOkKeQjf 6IQuNCrW1X551Br1zjIgsB/nPvWuwc6J3+s+SdjyoxMvi74rrsWp5r0LLPt/akxCPyX2 tSMzzSVNkn6LsSvRynYrLW+gVfLatZFPs6smO2q9t+cIfQGJW85aASgI5TQrSWDf79Ov Y8/ffCKXejBw63jjxzG/u5dEK+ePiO1bPU8nDvc1dkzX11QrK241ufo5XgLQm8ZByApw YSlQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=wtrbOzXzt9wxnf8OHlfPoi9Idcg4lLD8yNb/rdrSkK4=; b=RgwGVQN6UOGNiwAY9B2eSCVOFAdHEhiDfqW+eWFNbqZ0E17cZTW6hJ1YhtO3zm5c1x Qv1qrqAkOo38Qwydzxh3HQ4bX/o8heWsHUtucgM1dlX7pWT3a5rSFoKrxKmoNjPPuB/n OOLCFy+v0CK+0BRetAnWWwD4EMN+jtJFOsV2ONa64bLwGEJ3YluNYLuvEPeqXNNKa3Lw ldvMfz6cD01OGKto8/9wZSg+UnHF05auDKroRN9RURM6B990IixVcif/Xkpox6XF3CeW BQ7vYIZGUJwTzD6lxJpm+QoYJycgfAYx2V6hsVxCS+Uneu+6cJBx2Qxg6+0IHY+e10gm P4YQ== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jaehoon Chung , Chanwoo Choi , Ulf Hansson Subject: [PATCH 4.15 020/105] mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433 Date: Tue, 27 Mar 2018 18:27:00 +0200 Message-Id: <20180327162758.695430167@linuxfoundation.org> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180327162757.813009222@linuxfoundation.org> References: <20180327162757.813009222@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1596109460522217445?= X-GMAIL-MSGID: =?utf-8?q?1596109624808388753?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jaehoon Chung commit e22842dd64bf86753d3f2b6ea474d73fc1e6ca24 upstream. Before enabling the clock, dwmmc exynos driver is trying to access the register. Then the kernel panic can be occurred. Signed-off-by: Jaehoon Chung Reviewed-by: Chanwoo Choi Tested-by: Chanwoo Choi Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/dw_mmc-exynos.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -165,9 +165,15 @@ static void dw_mci_exynos_set_clksel_tim static int dw_mci_exynos_runtime_resume(struct device *dev) { struct dw_mci *host = dev_get_drvdata(dev); + int ret; + + ret = dw_mci_runtime_resume(dev); + if (ret) + return ret; dw_mci_exynos_config_smu(host); - return dw_mci_runtime_resume(dev); + + return ret; } /**