[WATCHDOG] s3c2410_wdt exit driver via labels
Cleanup the s3c2410_wdt driver's exit point by using labels instead of multiple returns. Also remove the checks for the resources having been allocate in the exit, as we will now either have fully allocated or not allocated the resources at-all. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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parent
e25db641c0
commit
0b6dd8a640
1 changed files with 34 additions and 24 deletions
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@ -366,13 +366,15 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
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wdt_mem = request_mem_region(res->start, size, pdev->name);
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if (wdt_mem == NULL) {
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printk(KERN_INFO PFX "failed to get memory region\n");
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return -ENOENT;
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ret = -ENOENT;
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goto err_req;
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}
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wdt_base = ioremap(res->start, size);
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if (wdt_base == 0) {
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printk(KERN_INFO PFX "failed to ioremap() region\n");
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return -EINVAL;
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ret = -EINVAL;
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goto err_req;
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}
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DBG("probe: mapped wdt_base=%p\n", wdt_base);
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@ -380,22 +382,21 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
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res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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if (res == NULL) {
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printk(KERN_INFO PFX "failed to get irq resource\n");
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iounmap(wdt_base);
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return -ENOENT;
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ret = -ENOENT;
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goto err_map;
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}
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ret = request_irq(res->start, s3c2410wdt_irq, 0, pdev->name, pdev);
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if (ret != 0) {
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printk(KERN_INFO PFX "failed to install irq (%d)\n", ret);
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iounmap(wdt_base);
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return ret;
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goto err_map;
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}
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wdt_clock = clk_get(&pdev->dev, "watchdog");
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if (wdt_clock == NULL) {
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printk(KERN_INFO PFX "failed to find watchdog clock source\n");
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iounmap(wdt_base);
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return -ENOENT;
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ret = -ENOENT;
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goto err_irq;
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}
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clk_enable(wdt_clock);
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@ -418,8 +419,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
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if (ret) {
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printk (KERN_ERR PFX "cannot register miscdev on minor=%d (%d)\n",
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WATCHDOG_MINOR, ret);
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iounmap(wdt_base);
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return ret;
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goto err_clk;
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}
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if (tmr_atboot && started == 0) {
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@ -434,26 +434,36 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
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}
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return 0;
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err_clk:
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clk_disable(wdt_clock);
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clk_put(wdt_clock);
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err_irq:
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free_irq(wdt_irq->start, pdev);
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err_map:
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iounmap(wdt_base);
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err_req:
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release_resource(wdt_mem);
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kfree(wdt_mem);
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return ret;
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}
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static int s3c2410wdt_remove(struct platform_device *dev)
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{
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if (wdt_mem != NULL) {
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release_resource(wdt_mem);
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kfree(wdt_mem);
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wdt_mem = NULL;
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}
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if (wdt_irq != NULL) {
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free_irq(wdt_irq->start, dev);
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wdt_irq = NULL;
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}
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if (wdt_clock != NULL) {
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clk_disable(wdt_clock);
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clk_put(wdt_clock);
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wdt_clock = NULL;
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}
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iounmap(wdt_base);
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misc_deregister(&s3c2410wdt_miscdev);
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