ARM: at91/tclib: take iomem size from resource
Requesting iomem region and ioremaping is now done using
the resource size specified instead of a constant value.
Each <SoC>_device.c file is modified accordingly to reflect
actual user interface size.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c
index 4bcfc37..7a6512a 100644
--- a/drivers/misc/atmel_tclib.c
+++ b/drivers/misc/atmel_tclib.c
@@ -9,10 +9,6 @@
#include <linux/slab.h>
#include <linux/export.h>
-/* Number of bytes to reserve for the iomem resource */
-#define ATMEL_TC_IOMEM_SIZE 256
-
-
/*
* This is a thin library to solve the problem of how to portably allocate
* one of the TC blocks. For simplicity, it doesn't currently expect to
@@ -48,6 +44,7 @@
struct atmel_tc *tc;
struct platform_device *pdev = NULL;
struct resource *r;
+ size_t size;
spin_lock(&tc_list_lock);
list_for_each_entry(tc, &tc_list, node) {
@@ -61,11 +58,15 @@
goto fail;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- r = request_mem_region(r->start, ATMEL_TC_IOMEM_SIZE, name);
if (!r)
goto fail;
- tc->regs = ioremap(r->start, ATMEL_TC_IOMEM_SIZE);
+ size = resource_size(r);
+ r = request_mem_region(r->start, size, name);
+ if (!r)
+ goto fail;
+
+ tc->regs = ioremap(r->start, size);
if (!tc->regs)
goto fail_ioremap;
@@ -76,7 +77,7 @@
return tc;
fail_ioremap:
- release_mem_region(r->start, ATMEL_TC_IOMEM_SIZE);
+ release_mem_region(r->start, size);
fail:
tc = NULL;
goto out;
@@ -96,7 +97,7 @@
spin_lock(&tc_list_lock);
if (tc->regs) {
iounmap(tc->regs);
- release_mem_region(tc->iomem->start, ATMEL_TC_IOMEM_SIZE);
+ release_mem_region(tc->iomem->start, resource_size(tc->iomem));
tc->regs = NULL;
tc->iomem = NULL;
}