TC: Error handling clean-ups
Rewrite TURBOchannel error handling to use a common failure path, making sure put_device is called for devices that failed initialization. While at it update printk calls to use pr_err rather than KERN_ERR. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6701/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -83,8 +83,7 @@ static void __init tc_bus_add_devices(struct tc_bus *tbus)
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/* Found a board, allocate it an entry in the list */
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tdev = kzalloc(sizeof(*tdev), GFP_KERNEL);
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if (!tdev) {
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printk(KERN_ERR "tc%x: unable to allocate tc_dev\n",
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slot);
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pr_err("tc%x: unable to allocate tc_dev\n", slot);
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goto out_err;
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}
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dev_set_name(&tdev->dev, "tc%x", slot);
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@ -117,10 +116,10 @@ static void __init tc_bus_add_devices(struct tc_bus *tbus)
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tdev->resource.start = extslotaddr;
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tdev->resource.end = extslotaddr + devsize - 1;
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} else {
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printk(KERN_ERR "%s: Cannot provide slot space "
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"(%dMiB required, up to %dMiB supported)\n",
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dev_name(&tdev->dev), devsize >> 20,
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max(slotsize, extslotsize) >> 20);
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pr_err("%s: Cannot provide slot space "
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"(%ldMiB required, up to %ldMiB supported)\n",
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dev_name(&tdev->dev), (long)(devsize >> 20),
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(long)(max(slotsize, extslotsize) >> 20));
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kfree(tdev);
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goto out_err;
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}
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@ -147,14 +146,12 @@ static int __init tc_init(void)
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{
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/* Initialize the TURBOchannel bus */
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if (tc_bus_get_info(&tc_bus))
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return 0;
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goto out_err;
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INIT_LIST_HEAD(&tc_bus.devices);
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dev_set_name(&tc_bus.dev, "tc");
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if (device_register(&tc_bus.dev)) {
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put_device(&tc_bus.dev);
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return 0;
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}
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if (device_register(&tc_bus.dev))
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goto out_err_device;
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if (tc_bus.info.slot_size) {
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unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;
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@ -172,8 +169,8 @@ static int __init tc_init(void)
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tc_bus.resource[0].flags = IORESOURCE_MEM;
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if (request_resource(&iomem_resource,
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&tc_bus.resource[0]) < 0) {
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printk(KERN_ERR "tc: Cannot reserve resource\n");
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return 0;
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pr_err("tc: Cannot reserve resource\n");
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goto out_err_device;
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}
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if (tc_bus.ext_slot_size) {
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tc_bus.resource[1].start = tc_bus.ext_slot_base;
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@ -184,10 +181,8 @@ static int __init tc_init(void)
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tc_bus.resource[1].flags = IORESOURCE_MEM;
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if (request_resource(&iomem_resource,
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&tc_bus.resource[1]) < 0) {
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printk(KERN_ERR
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"tc: Cannot reserve resource\n");
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release_resource(&tc_bus.resource[0]);
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return 0;
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pr_err("tc: Cannot reserve resource\n");
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goto out_err_resource;
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}
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}
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@ -195,6 +190,13 @@ static int __init tc_init(void)
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}
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return 0;
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out_err_resource:
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release_resource(&tc_bus.resource[0]);
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out_err_device:
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put_device(&tc_bus.dev);
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out_err:
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return 0;
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}
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subsys_initcall(tc_init);
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