unregister_chrdev(): ignore the return value
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>
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 83c7258..6005b52 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -425,9 +425,7 @@
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
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index 57f9115..3daf5e0 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -816,12 +816,7 @@
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);
}
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 93d0bb8..4a80b2f 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -4795,7 +4795,6 @@
{
struct stlbrd *brdp;
unsigned int i, j;
- int retval;
pr_debug("cleanup_module()\n");
@@ -4818,9 +4817,7 @@
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);
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index db57277..e12275d 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -1098,15 +1098,10 @@
/* 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,