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. Finally avoid printk format warnings on resource_size_t type variables.
Signed-off-by: Maciej W. Rozycki <[email protected]> --- The checkpatch.pl warning deliberately ignored, I'm not going to go past 79 columns. Stephen, I posted this fix originally to [email protected] back in April, but it got lost and I don't want to give Ralf more stuff to handle than absolutely necessary, he is really busy these days. Can you please take it directly to linux-next then? There's nothing specific to MIPS in this code really. Thanks, Maciej linux-tc-init-fix.patch Index: linux-20140329-4maxp64/drivers/tc/tc.c =================================================================== --- linux-20140329-4maxp64.orig/drivers/tc/tc.c +++ linux-20140329-4maxp64/drivers/tc/tc.c @@ -83,8 +83,7 @@ static void __init tc_bus_add_devices(st /* Found a board, allocate it an entry in the list */ tdev = kzalloc(sizeof(*tdev), GFP_KERNEL); if (!tdev) { - printk(KERN_ERR "tc%x: unable to allocate tc_dev\n", - slot); + pr_err("tc%x: unable to allocate tc_dev\n", slot); goto out_err; } dev_set_name(&tdev->dev, "tc%x", slot); @@ -117,10 +116,10 @@ static void __init tc_bus_add_devices(st tdev->resource.start = extslotaddr; tdev->resource.end = extslotaddr + devsize - 1; } else { - printk(KERN_ERR "%s: Cannot provide slot space " - "(%dMiB required, up to %dMiB supported)\n", - dev_name(&tdev->dev), devsize >> 20, - max(slotsize, extslotsize) >> 20); + pr_err("%s: Cannot provide slot space " + "(%ldMiB required, up to %ldMiB supported)\n", + dev_name(&tdev->dev), (long)(devsize >> 20), + (long)(max(slotsize, extslotsize) >> 20)); kfree(tdev); goto out_err; } @@ -147,14 +146,12 @@ static int __init tc_init(void) { /* Initialize the TURBOchannel bus */ if (tc_bus_get_info(&tc_bus)) - return 0; + goto out_err; INIT_LIST_HEAD(&tc_bus.devices); dev_set_name(&tc_bus.dev, "tc"); - if (device_register(&tc_bus.dev)) { - put_device(&tc_bus.dev); - return 0; - } + if (device_register(&tc_bus.dev)) + goto out_err_device; if (tc_bus.info.slot_size) { unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000; @@ -172,8 +169,8 @@ static int __init tc_init(void) tc_bus.resource[0].flags = IORESOURCE_MEM; if (request_resource(&iomem_resource, &tc_bus.resource[0]) < 0) { - printk(KERN_ERR "tc: Cannot reserve resource\n"); - return 0; + pr_err("tc: Cannot reserve resource\n"); + goto out_err_device; } if (tc_bus.ext_slot_size) { tc_bus.resource[1].start = tc_bus.ext_slot_base; @@ -184,10 +181,8 @@ static int __init tc_init(void) tc_bus.resource[1].flags = IORESOURCE_MEM; if (request_resource(&iomem_resource, &tc_bus.resource[1]) < 0) { - printk(KERN_ERR - "tc: Cannot reserve resource\n"); - release_resource(&tc_bus.resource[0]); - return 0; + pr_err("tc: Cannot reserve resource\n"); + goto out_err_resource; } } @@ -195,6 +190,13 @@ static int __init tc_init(void) } return 0; + +out_err_resource: + release_resource(&tc_bus.resource[0]); +out_err_device: + put_device(&tc_bus.dev); +out_err: + return 0; } subsys_initcall(tc_init); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
