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Date: Sun, 5 Jul 2009 08:36:22 +0200 (CEST)
From: Julia Lawall <julia@...u.dk>
To: dmitry.torokhov@...il.com, dtor@...l.ru,
linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org
Subject: [PATCH 2/5] drivers/input: Use resource_size
From: Julia Lawall <julia@...u.dk>
Use the function resource_size, which reduces the chance of introducing
off-by-one errors in calculating the resource size.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
struct resource *res;
@@
- (res->end - res->start) + 1
+ resource_size(res)
// </smpl>
Signed-off-by: Julia Lawall <julia@...u.dk>
---
drivers/input/misc/cobalt_btns.c | 2 +-
drivers/input/serio/at32psif.c | 2 +-
drivers/input/touchscreen/atmel_tsadcc.c | 8 ++++----
drivers/input/touchscreen/w90p910_ts.c | 8 ++++----
4 files changed, 10 insertions(+), 10 deletions(-)
diff -u -p a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c
--- a/drivers/input/misc/cobalt_btns.c 2009-07-04 21:32:44.000000000 +0200
+++ b/drivers/input/misc/cobalt_btns.c 2009-07-04 21:37:23.000000000 +0200
@@ -116,7 +116,7 @@ static int __devinit cobalt_buttons_prob
}
bdev->poll_dev = poll_dev;
- bdev->reg = ioremap(res->start, res->end - res->start + 1);
+ bdev->reg = ioremap(res->start, resource_size(res));
dev_set_drvdata(&pdev->dev, bdev);
error = input_register_polled_device(poll_dev);
diff -u -p a/drivers/input/serio/at32psif.c b/drivers/input/serio/at32psif.c
--- a/drivers/input/serio/at32psif.c 2008-12-07 19:29:06.000000000 +0100
+++ b/drivers/input/serio/at32psif.c 2009-07-04 21:37:23.000000000 +0200
@@ -231,7 +231,7 @@ static int __init psif_probe(struct plat
goto out_free_io;
}
- psif->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ psif->regs = ioremap(regs->start, resource_size(regs));
if (!psif->regs) {
ret = -ENOMEM;
dev_dbg(&pdev->dev, "could not map I/O memory\n");
diff -u -p a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c
--- a/drivers/input/touchscreen/atmel_tsadcc.c 2009-03-13 13:37:47.000000000 +0100
+++ b/drivers/input/touchscreen/atmel_tsadcc.c 2009-07-04 21:37:23.000000000 +0200
@@ -204,14 +204,14 @@ static int __devinit atmel_tsadcc_probe(
goto err_free_dev;
}
- if (!request_mem_region(res->start, res->end - res->start + 1,
+ if (!request_mem_region(res->start, resource_size(res),
"atmel tsadcc regs")) {
dev_err(&pdev->dev, "resources is unavailable.\n");
err = -EBUSY;
goto err_free_dev;
}
- tsc_base = ioremap(res->start, res->end - res->start + 1);
+ tsc_base = ioremap(res->start, resource_size(res));
if (!tsc_base) {
dev_err(&pdev->dev, "failed to map registers.\n");
err = -ENOMEM;
@@ -286,7 +286,7 @@ err_free_irq:
err_unmap_regs:
iounmap(tsc_base);
err_release_mem:
- release_mem_region(res->start, res->end - res->start + 1);
+ release_mem_region(res->start, resource_size(res));
err_free_dev:
input_free_device(ts_dev->input);
err_free_mem:
@@ -305,7 +305,7 @@ static int __devexit atmel_tsadcc_remove
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
iounmap(tsc_base);
- release_mem_region(res->start, res->end - res->start + 1);
+ release_mem_region(res->start, resource_size(res));
clk_disable(ts_dev->clk);
clk_put(ts_dev->clk);
diff -u -p a/drivers/input/touchscreen/w90p910_ts.c b/drivers/input/touchscreen/w90p910_ts.c
--- a/drivers/input/touchscreen/w90p910_ts.c 2009-06-24 21:18:49.000000000 +0200
+++ b/drivers/input/touchscreen/w90p910_ts.c 2009-07-04 21:37:23.000000000 +0200
@@ -241,13 +241,13 @@ static int __devinit w90x900ts_probe(str
goto fail1;
}
- if (!request_mem_region(res->start, res->end - res->start + 1,
+ if (!request_mem_region(res->start, resource_size(res),
pdev->name)) {
err = -EBUSY;
goto fail1;
}
- w90p910_ts->ts_reg = ioremap(res->start, res->end - res->start + 1);
+ w90p910_ts->ts_reg = ioremap(res->start, resource_size(res));
if (!w90p910_ts->ts_reg) {
err = -ENOMEM;
goto fail2;
@@ -296,7 +296,7 @@ static int __devinit w90x900ts_probe(str
fail4: free_irq(w90p910_ts->irq_num, w90p910_ts);
fail3: iounmap(w90p910_ts->ts_reg);
-fail2: release_mem_region(res->start, res->end - res->start + 1);
+fail2: release_mem_region(res->start, resource_size(res));
fail1: input_free_device(input_dev);
kfree(w90p910_ts);
return err;
@@ -312,7 +312,7 @@ static int __devexit w90x900ts_remove(st
iounmap(w90p910_ts->ts_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, res->end - res->start + 1);
+ release_mem_region(res->start, resource_size(res));
input_unregister_device(w90p910_ts->input);
kfree(w90p910_ts);
--
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