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mtd: pxa2xx-flash: switch back from memremap to ioremap_cached

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This reverts commit 06968a5479 ("mtd: pxa2xx-flash: switch from
ioremap_cache to memremap"), since NOR with memory semantics in array mode
and RAM are not necessarily the same thing, and architectures may implement
ioremap_cached() and memremap() with different memory attributes.

For this reason, ioremap_cached() has been brought back from the dead on
the ARM side, so switch this driver back to using it instead of memremap().

Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Ard Biesheuvel 2016-02-25 08:57:52 +01:00
parent 20c5ea4fc1
commit 7769aea2a2
1 changed files with 3 additions and 3 deletions
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6
drivers/mtd/maps/pxa2xx-flash.c
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@ -71,8 +71,8 @@ static int pxa2xx_flash_probe(struct platform_device *pdev)
info->map.name);
return -ENOMEM;
}
info->map.cached = memremap(info->map.phys, info->map.size,
MEMREMAP_WB);
info->map.cached =
ioremap_cached(info->map.phys, info->map.size);
if (!info->map.cached)
printk(KERN_WARNING "Failed to ioremap cached %s\n",
info->map.name);
@ -111,7 +111,7 @@ static int pxa2xx_flash_remove(struct platform_device *dev)
map_destroy(info->mtd);
iounmap(info->map.virt);
if (info->map.cached)
memunmap(info->map.cached);
iounmap(info->map.cached);
kfree(info);
return 0;
}