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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>
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@ -180,9 +180,7 @@ err:
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void __exit
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pcf8563_exit(void)
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{
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if (unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME) < 0) {
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printk(KERN_INFO "%s: Unable to unregister device.\n", PCF8563_NAME);
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}
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unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME);
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}
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/*
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@ -193,9 +193,7 @@ err:
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void __exit
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pcf8563_exit(void)
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{
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if (unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME) < 0) {
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printk(KERN_INFO "%s: Unable to unregister device.\n", PCF8563_NAME);
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}
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unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME);
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}
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/*
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@ -199,6 +199,5 @@ int __init init_socksys(void)
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void __exit cleanup_socksys(void)
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{
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if (unregister_chrdev(30, "socksys"))
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printk ("Couldn't unregister socksys character device\n");
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unregister_chrdev(30, "socksys");
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}
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@ -425,9 +425,7 @@ cleanup_module(void)
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printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
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}
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put_tty_driver(ip2_tty_driver);
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if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) {
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printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err);
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}
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unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
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remove_proc_entry("ip2mem", &proc_root);
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// free memory
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@ -816,12 +816,7 @@ struct cx_drv mbcs_driver = {
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static void __exit mbcs_exit(void)
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{
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int rv;
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rv = unregister_chrdev(mbcs_major, DEVICE_NAME);
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if (rv < 0)
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DBG(KERN_ALERT "Error in unregister_chrdev: %d\n", rv);
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unregister_chrdev(mbcs_major, DEVICE_NAME);
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cx_driver_unregister(&mbcs_driver);
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}
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@ -4795,7 +4795,6 @@ static void __exit stallion_module_exit(void)
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{
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struct stlbrd *brdp;
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unsigned int i, j;
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int retval;
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pr_debug("cleanup_module()\n");
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@ -4818,9 +4817,7 @@ static void __exit stallion_module_exit(void)
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for (i = 0; i < 4; i++)
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class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i));
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if ((retval = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
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printk("STALLION: failed to un-register serial memory device, "
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"errno=%d\n", -retval);
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unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
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class_destroy(stallion_class);
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pci_unregister_driver(&stl_pcidriver);
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@ -1098,15 +1098,10 @@ static int chg_state(int index, unsigned char new_state, struct file *file)
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/* Cleanup */
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static void __exit viotap_exit(void)
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{
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int ret;
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remove_proc_entry("iSeries/viotape", NULL);
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vio_unregister_driver(&viotape_driver);
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class_destroy(tape_class);
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ret = unregister_chrdev(VIOTAPE_MAJOR, "viotape");
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if (ret < 0)
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printk(VIOTAPE_KERN_WARN "Error unregistering device: %d\n",
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ret);
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unregister_chrdev(VIOTAPE_MAJOR, "viotape");
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if (viotape_unitinfo)
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dma_free_coherent(iSeries_vio_dev,
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sizeof(viotape_unitinfo[0]) * VIOTAPE_MAX_TAPE,
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@ -2684,8 +2684,7 @@ static void __exit ppp_cleanup(void)
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if (atomic_read(&ppp_unit_count) || atomic_read(&channel_count))
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printk(KERN_ERR "PPP: removing module but units remain!\n");
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cardmap_destroy(&all_ppp_units);
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if (unregister_chrdev(PPP_MAJOR, "ppp") != 0)
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printk(KERN_ERR "PPP: failed to unregister PPP device\n");
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unregister_chrdev(PPP_MAJOR, "ppp");
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device_destroy(ppp_class, MKDEV(PPP_MAJOR, 0));
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class_destroy(ppp_class);
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}
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@ -446,8 +446,7 @@ static void __exit alsa_sound_exit(void)
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{
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snd_info_minor_unregister();
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snd_info_done();
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if (unregister_chrdev(major, "alsa") != 0)
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snd_printk(KERN_ERR "unable to unregister major device number %d\n", major);
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unregister_chrdev(major, "alsa");
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}
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module_init(alsa_sound_init)
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