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unregister_chrdev(): ignore the return value

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unregister_chrdev() always returns 0.  There is no need to check the return
value.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2007-07-19 01:47:50 -07:00 committed by Linus Torvalds
parent cb00ea3528
commit 68fc4fabca
9 changed files with 9 additions and 31 deletions
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4
arch/cris/arch-v10/drivers/pcf8563.c
View file

@ -180,9 +180,7 @@ pcf8563_init(void)
void __exit
pcf8563_exit(void)
{
if (unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME) < 0) {
printk(KERN_INFO "%s: Unable to unregister device.\n", PCF8563_NAME);
}
unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME);
}
/*

4
arch/cris/arch-v32/drivers/pcf8563.c
View file

@ -193,9 +193,7 @@ pcf8563_init(void)
void __exit
pcf8563_exit(void)
{
if (unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME) < 0) {
printk(KERN_INFO "%s: Unable to unregister device.\n", PCF8563_NAME);
}
unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME);
}
/*

3
arch/sparc64/solaris/socksys.c
View file

@ -199,6 +199,5 @@ int __init init_socksys(void)
void __exit cleanup_socksys(void)
{
if (unregister_chrdev(30, "socksys"))
printk ("Couldn't unregister socksys character device\n");
unregister_chrdev(30, "socksys");
}

4
drivers/char/ip2/ip2main.c
View file

@ -425,9 +425,7 @@ cleanup_module(void)
printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
}
put_tty_driver(ip2_tty_driver);
if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) {
printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err);
}
unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
remove_proc_entry("ip2mem", &proc_root);
// free memory

7
drivers/char/mbcs.c
View file

@ -816,12 +816,7 @@ struct cx_drv mbcs_driver = {
static void __exit mbcs_exit(void)
{
int rv;
rv = unregister_chrdev(mbcs_major, DEVICE_NAME);
if (rv < 0)
DBG(KERN_ALERT "Error in unregister_chrdev: %d\n", rv);
unregister_chrdev(mbcs_major, DEVICE_NAME);
cx_driver_unregister(&mbcs_driver);
}

5
drivers/char/stallion.c
View file

@ -4795,7 +4795,6 @@ static void __exit stallion_module_exit(void)
{
struct stlbrd *brdp;
unsigned int i, j;
int retval;
pr_debug("cleanup_module()\n");
@ -4818,9 +4817,7 @@ static void __exit stallion_module_exit(void)
for (i = 0; i < 4; i++)
class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i));
if ((retval = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
printk("STALLION: failed to un-register serial memory device, "
"errno=%d\n", -retval);
unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
class_destroy(stallion_class);
pci_unregister_driver(&stl_pcidriver);

7
drivers/char/viotape.c
View file

@ -1098,15 +1098,10 @@ static int chg_state(int index, unsigned char new_state, struct file *file)
/* Cleanup */
static void __exit viotap_exit(void)
{
int ret;
remove_proc_entry("iSeries/viotape", NULL);
vio_unregister_driver(&viotape_driver);
class_destroy(tape_class);
ret = unregister_chrdev(VIOTAPE_MAJOR, "viotape");
if (ret < 0)
printk(VIOTAPE_KERN_WARN "Error unregistering device: %d\n",
ret);
unregister_chrdev(VIOTAPE_MAJOR, "viotape");
if (viotape_unitinfo)
dma_free_coherent(iSeries_vio_dev,
sizeof(viotape_unitinfo[0]) * VIOTAPE_MAX_TAPE,

3
drivers/net/ppp_generic.c
View file

@ -2684,8 +2684,7 @@ static void __exit ppp_cleanup(void)
if (atomic_read(&ppp_unit_count) || atomic_read(&channel_count))
printk(KERN_ERR "PPP: removing module but units remain!\n");
cardmap_destroy(&all_ppp_units);
if (unregister_chrdev(PPP_MAJOR, "ppp") != 0)
printk(KERN_ERR "PPP: failed to unregister PPP device\n");
unregister_chrdev(PPP_MAJOR, "ppp");
device_destroy(ppp_class, MKDEV(PPP_MAJOR, 0));
class_destroy(ppp_class);
}

3
sound/core/sound.c
View file

@ -446,8 +446,7 @@ static void __exit alsa_sound_exit(void)
{
snd_info_minor_unregister();
snd_info_done();
if (unregister_chrdev(major, "alsa") != 0)
snd_printk(KERN_ERR "unable to unregister major device number %d\n", major);
unregister_chrdev(major, "alsa");
}
module_init(alsa_sound_init)