Messages in this thread Patch in this message | | | From | Florian Tobias Schandinat <> | Subject | [PATCH 6/7] viafb: fix proc entry removal | Date | Sat, 17 Apr 2010 19:44:56 +0000 |
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viafb: fix proc entry removal
Trying to remove unregistered proc entries became painful and is useless anyway. So remove the removal of an entry that was never registered and duplicate the logic for one which is added conditionally. Additionally move the removal above releasing fb_info as we still need the information. This prevents tainting the kernel by the procfs warn on and avoiding access to already freed memory is probably also a good idea.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> --- drivers/video/via/viafbdev.c | 13 +++++++------ 1 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index c6c01ef..457a9b2 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -1702,13 +1702,16 @@ static void viafb_init_proc(struct proc_dir_entry **viafb_entry) } static void viafb_remove_proc(struct proc_dir_entry *viafb_entry) { - /* no problem if it was not registered */ + struct chip_information *chip_info = &viaparinfo->shared->chip_info; + remove_proc_entry("dvp0", viafb_entry);/* parent dir */ remove_proc_entry("dvp1", viafb_entry); remove_proc_entry("dfph", viafb_entry); remove_proc_entry("dfpl", viafb_entry); - remove_proc_entry("vt1636", viafb_entry); - remove_proc_entry("vt1625", viafb_entry); + if (chip_info->lvds_chip_info.lvds_chip_name == VT1636_LVDS + || chip_info->lvds_chip_info2.lvds_chip_name == VT1636_LVDS) + remove_proc_entry("vt1636", viafb_entry); + remove_proc_entry("viafb", NULL); } @@ -1951,12 +1954,10 @@ static void __devexit via_pci_remove(struct pci_dev *pdev) iounmap(viaparinfo->shared->engine_mmio); viafb_delete_i2c_buss(viaparinfo); - + viafb_remove_proc(viaparinfo->shared->proc_entry); framebuffer_release(viafbinfo); if (viafb_dual_fb) framebuffer_release(viafbinfo1); - - viafb_remove_proc(viaparinfo->shared->proc_entry); } #ifndef MODULE -- 1.6.3.2
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