linux-kernel - [PATCH] block: pmem: Add dependency on HAS

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Message-Id: <1430765937-32694-1-git-send-email-richard@nod.at>
Date:	Mon,  4 May 2015 20:58:57 +0200
From:	Richard Weinberger <richard@....at>
To:	axboe@...nel.dk
Cc:	dan.j.williams@...el.com, ross.zwisler@...ux.intel.com,
	mingo@...nel.org, willy@...ux.intel.com,
	linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>
Subject: [PATCH] block: pmem: Add dependency on HAS_IOMEM

Not all architectures have io memory.

Fixes:
drivers/block/pmem.c: In function ‘pmem_alloc’:
drivers/block/pmem.c:146:2: error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration]
  pmem->virt_addr = ioremap_nocache(pmem->phys_addr, pmem->size);
  ^
drivers/block/pmem.c:146:18: warning: assignment makes pointer from integer without a cast [enabled by default]
  pmem->virt_addr = ioremap_nocache(pmem->phys_addr, pmem->size);
                  ^
drivers/block/pmem.c:182:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration]
  iounmap(pmem->virt_addr);
  ^

Signed-off-by: Richard Weinberger <richard@....at>
---
 drivers/block/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index eb1fed5..3ccef9e 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -406,6 +406,7 @@ config BLK_DEV_RAM_DAX
 
 config BLK_DEV_PMEM
 	tristate "Persistent memory block device support"
+	depends on HAS_IOMEM
 	help
 	  Saying Y here will allow you to use a contiguous range of reserved
 	  memory as one or more persistent block devices.
-- 
1.8.4.5

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