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From:   frowand.list@gmail.com
To:     Andy Gross <andy.gross@linaro.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>
Cc:     Arun Kumar Neelakantam <aneela@codeaurora.org>,
        linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: [PATCH] ARM: qcom_defconfig: Enable MAILBOX
Date:   Thu,  6 Sep 2018 21:44:48 -0700
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From: Frank Rowand <frank.rowand@sony.com>

Problem:
ab460a2e72da ("rpmsg: qcom_smd: Access APCS through mailbox framework"
added a "depends on MAILBOX") to RPMSG_QCOM_SMD, thus RPMSG_QCOM_SMD
becomes unset since MAILBOX was not enabled in qcom_defconfig and is
not otherwise selected for the dragonboard.  When the resulting
kernel is booted the mmc device which contains the root file system
is not available.

Fix:
add CONFIG_MAILBOX to qcom_defconfig

Fixes: ab460a2e72da ("rpmsg: qcom_smd: Access APCS through mailbox framework"
added a "depends on MAILBOX")

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
---

Bjorn suggested that multi_v7_defconfig might need this same fix
but I don't have a target to test on so I have not included that
change in this patch

Tested on Qualcomm APQ8074 Dragonboard

 arch/arm/configs/qcom_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/qcom_defconfig b/arch/arm/configs/qcom_defconfig
index 6aa7046fb91f..bd6440f23493 100644
--- a/arch/arm/configs/qcom_defconfig
+++ b/arch/arm/configs/qcom_defconfig
@@ -207,6 +207,7 @@ CONFIG_MSM_MMCC_8974=y
 CONFIG_MSM_IOMMU=y
 CONFIG_HWSPINLOCK=y
 CONFIG_HWSPINLOCK_QCOM=y
+CONFIG_MAILBOX=y
 CONFIG_REMOTEPROC=y
 CONFIG_QCOM_ADSP_PIL=y
 CONFIG_QCOM_Q6V5_PIL=y
-- 
Frank Rowand <frank.rowand@sony.com>