linux-kernel - [PATCH 5.4 01/90] dmaengine: ALTERA_MSGDMA depends on HAS

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Date:   Mon, 21 Jun 2021 18:14:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>, Stefan Roese <sr@...x.de>,
        Vinod Koul <vkoul@...nel.org>, dmaengine@...r.kernel.org,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 01/90] dmaengine: ALTERA_MSGDMA depends on HAS_IOMEM

From: Randy Dunlap <rdunlap@...radead.org>

[ Upstream commit 253697b93c2a1c237d34d3ae326e394aeb0ca7b3 ]

When CONFIG_HAS_IOMEM is not set/enabled, certain iomap() family
functions [including ioremap(), devm_ioremap(), etc.] are not
available.
Drivers that use these functions should depend on HAS_IOMEM so that
they do not cause build errors.

Repairs this build error:
s390-linux-ld: drivers/dma/altera-msgdma.o: in function `request_and_map':
altera-msgdma.c:(.text+0x14b0): undefined reference to `devm_ioremap'

Fixes: a85c6f1b2921 ("dmaengine: Add driver for Altera / Intel mSGDMA IP core")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Cc: Stefan Roese <sr@...x.de>
Cc: Vinod Koul <vkoul@...nel.org>
Cc: dmaengine@...r.kernel.org
Reviewed-by: Stefan Roese <sr@...x.de>
Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr@...x.de
Link: https://lore.kernel.org/r/20210522021313.16405-2-rdunlap@infradead.org
Signed-off-by: Vinod Koul <vkoul@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/dma/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 7af874b69ffb..a32d0d715247 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -59,6 +59,7 @@ config DMA_OF
 #devices
 config ALTERA_MSGDMA
 	tristate "Altera / Intel mSGDMA Engine"
+	depends on HAS_IOMEM
 	select DMA_ENGINE
 	help
 	  Enable support for Altera / Intel mSGDMA controller.
-- 
2.30.2