linux-kernel - [PATCH] remoteproc: fix linking against QMP

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Date:   Tue, 19 Oct 2021 17:38:04 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Stephen Boyd <swboyd@...omium.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Peng Fan <peng.fan@....com>,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] remoteproc: fix linking against QMP

From: Arnd Bergmann <arnd@...db.de>

With QCOM_AOSS_QMP=m, the built-in q6v5 code fails to link:

ld.lld: error: undefined symbol: qmp_send
>>> referenced by qcom_q6v5.c
>>>               remoteproc/qcom_q6v5.o:(q6v5_load_state_toggle) in archive drivers/built-in.a

ld.lld: error: undefined symbol: qmp_get
>>> referenced by qcom_q6v5.c
>>>               remoteproc/qcom_q6v5.o:(qcom_q6v5_init) in archive drivers/built-in.a

ld.lld: error: undefined symbol: qmp_put
>>> referenced by qcom_q6v5.c
>>>               remoteproc/qcom_q6v5.o:(qcom_q6v5_init) in archive drivers/built-in.a
>>> referenced by qcom_q6v5.c
>>>               remoteproc/qcom_q6v5.o:(qcom_q6v5_deinit) in archive drivers/built-in.a

Apparently it is meant to work without that code, so add
another hacky dependency to prevent the broken link, but
explicitly allow it to be built without QCOM_AOSS_QMP.

QCOM_Q6V5_COMMON is a hidden symbol, but add the dependency
there anyway to give a hint in case another user comes up and
misses gets this wrong again.

Fixes: c1fe10d238c0 ("remoteproc: qcom: q6v5: Use qmp_send to update co-processor load state")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/remoteproc/Kconfig | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index f2e961f998ca..d45e47b873b1 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -171,11 +171,13 @@ config QCOM_Q6V5_COMMON
 	tristate
 	depends on ARCH_QCOM
 	depends on QCOM_SMEM
+	depends on QCOM_AOSS_QMP || !QCOM_AOSS_QMP
 
 config QCOM_Q6V5_ADSP
 	tristate "Qualcomm Technology Inc ADSP Peripheral Image Loader"
 	depends on OF && ARCH_QCOM
 	depends on QCOM_SMEM
+	depends on QCOM_AOSS_QMP || !QCOM_AOSS_QMP
 	depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n
 	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
@@ -198,6 +200,7 @@ config QCOM_Q6V5_MSS
 	depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n
 	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
+	depends on QCOM_AOSS_QMP || !QCOM_AOSS_QMP
 	depends on RPMSG_QCOM_GLINK || RPMSG_QCOM_GLINK=n
 	select MFD_SYSCON
 	select QCOM_MDT_LOADER
@@ -214,6 +217,7 @@ config QCOM_Q6V5_PAS
 	tristate "Qualcomm Hexagon v5 Peripheral Authentication Service support"
 	depends on OF && ARCH_QCOM
 	depends on QCOM_SMEM
+	depends on QCOM_AOSS_QMP || !QCOM_AOSS_QMP
 	depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n
 	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
@@ -235,6 +239,7 @@ config QCOM_Q6V5_WCSS
 	tristate "Qualcomm Hexagon based WCSS Peripheral Image Loader"
 	depends on OF && ARCH_QCOM
 	depends on QCOM_SMEM
+	depends on QCOM_AOSS_QMP || !QCOM_AOSS_QMP
 	depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n
 	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
-- 
2.29.2