[PATCH 22/29] host1x/{dev.c,drm/hdmi.c}: simplify use of devm_ioremap_resource

Julia Lawall
2013-08-14T09:11:26Z

Move the call to platform_get_resource adjacent to the call to
devm_ioremap_resource to make the connection between them more clear.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression pdev,res,n,e,e1;
expression ret != 0;
identifier l;
@@

- res = platform_get_resource(pdev, IORESOURCE_MEM, n);
... when != res
- if (res = NULL) { ... \(goto l;\|return ret;\) }
... when != res
+ res = platform_get_resource(pdev, IORESOURCE_MEM, n);
e = devm_ioremap_resource(e1, res);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
drivers/gpu/host1x/dev.c | 7 +------
drivers/gpu/host1x/drm/hdmi.c | 3 ---
2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index 28e28a2..e615edd 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -98,12 +98,6 @@ static int host1x_probe(struct platform_device *pdev)
if (!id)
return -EINVAL;

- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs) {
- dev_err(&pdev->dev, "failed to get registers\n");
- return -ENXIO;
- }
-
syncpt_irq = platform_get_irq(pdev, 0);
if (syncpt_irq < 0) {
dev_err(&pdev->dev, "failed to get IRQ\n");
@@ -120,6 +114,7 @@ static int host1x_probe(struct platform_device *pdev)
/* set common host1x device data */
platform_set_drvdata(pdev, host);

+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->regs = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(host->regs))
return PTR_ERR(host->regs);
diff --git a/drivers/gpu/host1x/drm/hdmi.c b/drivers/gpu/host1x/drm/hdmi.c
index 01097da..9ffece6 100644
--- a/drivers/gpu/host1x/drm/hdmi.c
+++ b/drivers/gpu/host1x/drm/hdmi.c
@@ -1248,9 +1248,6 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
return err;

regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs)
- return -ENXIO;
-
hdmi->regs = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(hdmi->regs))
return PTR_ERR(hdmi->regs);