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authorSamu Onkalo <samu.p.onkalo@nokia.com>2010-05-24 23:33:10 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 17:07:03 +0200
commitfa1f68db6ca7ebb6fc4487ac215bffba06c01c28 (patch)
tree6682b0c8d27c0d0a377125215f54378be37c5b61 /drivers/char
parentinclude/asm-generic/kmap_types.h: add helpful reminder (diff)
downloadlinux-fa1f68db6ca7ebb6fc4487ac215bffba06c01c28.tar.xz
linux-fa1f68db6ca7ebb6fc4487ac215bffba06c01c28.zip
drivers: misc: pass miscdevice pointer via file private data
For misc devices, inode->i_cdev doesn't point to the device drivers own data. Link between file operations and device driver internal data is lost. Pass pointer to misc device struct via file private data for driver open function use. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/misc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 92ab03d28294..cd650ca8c679 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -144,6 +144,7 @@ static int misc_open(struct inode * inode, struct file * file)
old_fops = file->f_op;
file->f_op = new_fops;
if (file->f_op->open) {
+ file->private_data = c;
err=file->f_op->open(inode,file);
if (err) {
fops_put(file->f_op);