diff options
| author | Christophe Lucas <clucas@rotomalug.org> | 2005-09-10 00:26:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-10 10:06:25 -0700 |
| commit | 1ac19f4ccd8636dbe76a97cec36c95d7548cc871 (patch) | |
| tree | 1faa1f44183628138643a9e5eb011b2c4d3f6484 /drivers/misc/hdpuftrs | |
| parent | cf85d5ca880c9611906e0ca0c729fdf01c724501 (diff) | |
| download | linux-1ac19f4ccd8636dbe76a97cec36c95d7548cc871.tar.gz | |
[PATCH] hdpu_cpustate.c: misc_register() can fail
Signed-off-by: Christophe Lucas <clucas@rotomalug.org> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/misc/hdpuftrs')
| -rw-r--r-- | drivers/misc/hdpuftrs/hdpu_cpustate.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c index 7501fab349e4..46de5c940555 100644 --- a/drivers/misc/hdpuftrs/hdpu_cpustate.c +++ b/drivers/misc/hdpuftrs/hdpu_cpustate.c @@ -192,22 +192,37 @@ static int hdpu_cpustate_probe(struct device *ddev) { struct platform_device *pdev = to_platform_device(ddev); struct resource *res; + struct proc_dir_entry *proc_de; + int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); cpustate.set_addr = (unsigned long *)res->start; cpustate.clr_addr = (unsigned long *)res->end - 1; - misc_register(&cpustate_dev); - create_proc_read_entry("sky_cpustate", 0, 0, cpustate_read_proc, NULL); + ret = misc_register(&cpustate_dev); + if (ret) { + printk(KERN_WARNING "sky_cpustate: Unable to register misc " + "device.\n"); + cpustate.set_addr = NULL; + cpustate.clr_addr = NULL; + return ret; + } + + proc_de = create_proc_read_entry("sky_cpustate", 0, 0, + cpustate_read_proc, NULL); + if (proc_de == NULL) + printk(KERN_WARNING "sky_cpustate: Unable to create proc " + "dir entry\n"); printk(KERN_INFO "Sky CPU State Driver v" SKY_CPUSTATE_VERSION "\n"); return 0; } + static int hdpu_cpustate_remove(struct device *ddev) { - cpustate.set_addr = 0; - cpustate.clr_addr = 0; + cpustate.set_addr = NULL; + cpustate.clr_addr = NULL; remove_proc_entry("sky_cpustate", NULL); misc_deregister(&cpustate_dev); |