linux-kernel - [PATCH v3 12/24] memconsole: fix __iomem mishandling, switch to memremap

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Message-ID: <20150730165445.33962.95437.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:	Thu, 30 Jul 2015 12:54:45 -0400
From:	Dan Williams <dan.j.williams@...el.com>
To:	tglx@...utronix.de, mingo@...nel.org, hpa@...or.com
Cc:	linux-arch@...r.kernel.org, toshi.kani@...com,
	linux-nvdimm@...ts.01.org, mcgrof@...e.com,
	linux-kernel@...r.kernel.org, Mike Waychison <mikew@...gle.com>,
	rmk+kernel@....linux.org.uk, hch@....de,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v3 12/24] memconsole: fix __iomem mishandling,
 switch to memremap

The memconsole driver is not using proper accessors for __iomem.  Switch
to memremap to fix this issue, and this also prepares the driver for the
removal of ioremap_cache.

Cc: Mike Waychison <mikew@...gle.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/firmware/google/memconsole.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/google/memconsole.c b/drivers/firmware/google/memconsole.c
index 2f569aaed4c7..fd5041716860 100644
--- a/drivers/firmware/google/memconsole.c
+++ b/drivers/firmware/google/memconsole.c
@@ -52,14 +52,15 @@ static ssize_t memconsole_read(struct file *filp, struct kobject *kobp,
 	char *memconsole;
 	ssize_t ret;
 
-	memconsole = ioremap_cache(memconsole_baseaddr, memconsole_length);
+	memconsole = memremap(memconsole_baseaddr, memconsole_length,
+			MEMREMAP_WB);
 	if (!memconsole) {
-		pr_err("memconsole: ioremap_cache failed\n");
+		pr_err("memconsole: memremap failed\n");
 		return -ENOMEM;
 	}
 	ret = memory_read_from_buffer(buf, count, &pos, memconsole,
 				      memconsole_length);
-	iounmap(memconsole);
+	memunmap(memconsole);
 	return ret;
 }
 

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