linux-kernel - [PATCH 4/4] DMA: XILINX_ZYNQMP_DPDMA depends on HAS

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Message-Id: <20210522021313.16405-5-rdunlap@infradead.org>
Date:   Fri, 21 May 2021 19:13:13 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>, Stefan Roese <sr@...x.de>,
        Vinod Koul <vkoul@...nel.org>, dmaengine@...r.kernel.org,
        Sinan Kaya <okaya@...eaurora.org>,
        Green Wan <green.wan@...ive.com>,
        Hyun Kwon <hyun.kwon@...inx.com>,
        Tejas Upadhyay <tejasu@...inx.com>,
        Michal Simek <michal.simek@...inx.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH 4/4] DMA: XILINX_ZYNQMP_DPDMA depends on HAS_IOMEM

When CONFIG_HAS_IOMEM is not set/enabled, most 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.

Cures this build error:
s390-linux-ld: drivers/dma/xilinx/xilinx_dpdma.o: in function `xilinx_dpdma_probe':
xilinx_dpdma.c:(.text+0x336a): undefined reference to `devm_platform_ioremap_resource'

Fixes: 7cbb0c63de3fc ("dmaengine: xilinx: dpdma: Add the Xilinx DisplayPort DMA engine driver")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Cc: Vinod Koul <vkoul@...nel.org>
CC: dmaengine@...r.kernel.org
Cc: Hyun Kwon <hyun.kwon@...inx.com>
Cc: Tejas Upadhyay <tejasu@...inx.com>
Cc: Michal Simek <michal.simek@...inx.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
 drivers/dma/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20210521.orig/drivers/dma/Kconfig
+++ linux-next-20210521/drivers/dma/Kconfig
@@ -702,6 +702,7 @@ config XILINX_ZYNQMP_DMA
 
 config XILINX_ZYNQMP_DPDMA
 	tristate "Xilinx DPDMA Engine"
+	depends on HAS_IOMEM
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
 	help