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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Vincenzo Frascino <vincenzo.frascino@arm.com>,
        Jens Wiklander <jens.wiklander@linaro.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 75/89] tee: optee: Fix compilation issue with nommu
Date:   Mon,  3 Feb 2020 16:20:00 +0000
Message-Id: <20200203161926.121917970@linuxfoundation.org>
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From: Vincenzo Frascino <vincenzo.frascino@arm.com>

[ Upstream commit 9e0caab8e0f96f0af7d1dd388e62f44184a75372 ]

The optee driver uses specific page table types to verify if a memory
region is normal. These types are not defined in nommu systems. Trying
to compile the driver in these systems results in a build error:

  linux/drivers/tee/optee/call.c: In function ‘is_normal_memory’:
  linux/drivers/tee/optee/call.c:533:26: error: ‘L_PTE_MT_MASK’ undeclared
     (first use in this function); did you mean ‘PREEMPT_MASK’?
     return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC;
                             ^~~~~~~~~~~~~
                             PREEMPT_MASK
  linux/drivers/tee/optee/call.c:533:26: note: each undeclared identifier is
     reported only once for each function it appears in
  linux/drivers/tee/optee/call.c:533:44: error: ‘L_PTE_MT_WRITEALLOC’ undeclared
     (first use in this function)
     return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC;
                                            ^~~~~~~~~~~~~~~~~~~

Make the optee driver depend on MMU to fix the compilation issue.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
[jw: update commit title]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tee/optee/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tee/optee/Kconfig b/drivers/tee/optee/Kconfig
index 0126de898036c..108600c6eb564 100644
--- a/drivers/tee/optee/Kconfig
+++ b/drivers/tee/optee/Kconfig
@@ -2,6 +2,7 @@
 config OPTEE
 	tristate "OP-TEE"
 	depends on HAVE_ARM_SMCCC
+	depends on MMU
 	help
 	  This implements the OP-TEE Trusted Execution Environment (TEE)
 	  driver.
-- 
2.20.1