mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
media: saa7164: fix remove_proc_entry warning
if saa7164_proc_create() fails, saa7164_fini() will trigger a warning, name 'saa7164' WARNING: CPU: 1 PID: 6311 at fs/proc/generic.c:672 remove_proc_entry+0x1e8/0x3a0 ? remove_proc_entry+0x1e8/0x3a0 ? try_stop_module+0x7b/0x240 ? proc_readdir+0x70/0x70 ? rcu_read_lock_sched_held+0xd7/0x100 saa7164_fini+0x13/0x1f [saa7164] __x64_sys_delete_module+0x30c/0x480 ? __ia32_sys_delete_module+0x480/0x480 ? __x64_sys_clock_gettime+0x11e/0x1c0 ? __x64_sys_timer_create+0x1a0/0x1a0 ? trace_hardirqs_off_caller+0x40/0x180 ? do_syscall_64+0x18/0x450 do_syscall_64+0x9f/0x450 entry_SYSCALL_64_after_hwframe+0x49/0xbe Fix it by checking the return of proc_create_single() before calling remove_proc_entry(). Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: use 0444 instead of S_IRUGO] [hverkuil-cisco@xs4all.nl: use pr_info instead of KERN_INFO] Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
parent
518fa4e0e0
commit
50710eeefb
1 changed files with 22 additions and 11 deletions
|
@ -1122,16 +1122,25 @@ static int saa7164_proc_show(struct seq_file *m, void *v)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static struct proc_dir_entry *saa7164_pe;
|
||||
|
||||
static int saa7164_proc_create(void)
|
||||
{
|
||||
struct proc_dir_entry *pe;
|
||||
|
||||
pe = proc_create_single("saa7164", S_IRUGO, NULL, saa7164_proc_show);
|
||||
if (!pe)
|
||||
saa7164_pe = proc_create_single("saa7164", 0444, NULL, saa7164_proc_show);
|
||||
if (!saa7164_pe)
|
||||
return -ENOMEM;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void saa7164_proc_destroy(void)
|
||||
{
|
||||
if (saa7164_pe)
|
||||
remove_proc_entry("saa7164", NULL);
|
||||
}
|
||||
#else
|
||||
static int saa7164_proc_create(void) { return 0; }
|
||||
static void saa7164_proc_destroy(void) {}
|
||||
#endif
|
||||
|
||||
static int saa7164_thread_function(void *data)
|
||||
|
@ -1503,19 +1512,21 @@ static struct pci_driver saa7164_pci_driver = {
|
|||
|
||||
static int __init saa7164_init(void)
|
||||
{
|
||||
printk(KERN_INFO "saa7164 driver loaded\n");
|
||||
int ret = pci_register_driver(&saa7164_pci_driver);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
saa7164_proc_create();
|
||||
#endif
|
||||
return pci_register_driver(&saa7164_pci_driver);
|
||||
|
||||
pr_info("saa7164 driver loaded\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit saa7164_fini(void)
|
||||
{
|
||||
#ifdef CONFIG_PROC_FS
|
||||
remove_proc_entry("saa7164", NULL);
|
||||
#endif
|
||||
saa7164_proc_destroy();
|
||||
pci_unregister_driver(&saa7164_pci_driver);
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue