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Subject[trivial PATCH 2/2] arm: mach-u300/gpio: Fix mem_region resource size miscalculations
Date
Convert off-by-1 r->end - r->start to resource_size(r)

Signed-off-by: Joe Perches <joe@perches.com>
---
arch/arm/mach-u300/gpio.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-u300/gpio.c b/arch/arm/mach-u300/gpio.c
index d927901..94837a4 100644
--- a/arch/arm/mach-u300/gpio.c
+++ b/arch/arm/mach-u300/gpio.c
@@ -581,8 +581,7 @@ static int __init gpio_probe(struct platform_device *pdev)
if (!memres)
goto err_no_resource;

- if (request_mem_region(memres->start, memres->end - memres->start, "GPIO Controller")
- == NULL) {
+ if (!request_mem_region(memres->start, resource_size(memres), "GPIO Controller")) {
err = -ENODEV;
goto err_no_ioregion;
}
@@ -640,7 +639,7 @@ static int __init gpio_probe(struct platform_device *pdev)
free_irq(gpio_ports[i].irq, &gpio_ports[i]);
iounmap(virtbase);
err_no_ioremap:
- release_mem_region(memres->start, memres->end - memres->start);
+ release_mem_region(memres->start, resource_size(memres));
err_no_ioregion:
err_no_resource:
clk_disable(clk);
@@ -660,7 +659,7 @@ static int __exit gpio_remove(struct platform_device *pdev)
for (i = 0 ; i < U300_GPIO_NUM_PORTS; i++)
free_irq(gpio_ports[i].irq, &gpio_ports[i]);
iounmap(virtbase);
- release_mem_region(memres->start, memres->end - memres->start);
+ release_mem_region(memres->start, resource_size(memres));
clk_disable(clk);
clk_put(clk);
return 0;
--
1.7.4.2.g597a6.dirty


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