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authorMaciej W. Rozycki <macro@linux-mips.org>2014-04-06 20:52:37 +0100
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:45:25 +0100
commite2afb7de6e7dad21f9d709f80f23bbd3c5bdad11 (patch)
tree4f12f7bc3f050cf3a0d889c5ea9c852fbd486af0 /drivers/tc
parent187c26ddf0b201aeb7e343be19a3da72eef19db4 (diff)
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>
Diffstat (limited to 'drivers/tc')
-rw-r--r--drivers/tc/tc.c36
1 files changed, 19 insertions, 17 deletions
diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c
index 946562389ca8..3be9519654e5 100644
--- a/drivers/tc/tc.c
+++ b/drivers/tc/tc.c
@@ -83,8 +83,7 @@ static void __init tc_bus_add_devices(struct tc_bus *tbus)
/* 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(struct tc_bus *tbus)
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);

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