From: Elad Wexler <elad.wex...@gmail.com>
This change improves code readability & is less error-prone.
For example: case adding more error paths one should remember to call
'mutex_unlock'
Signed-off-by: Elad Wexler <elad.wex...@gmail.com>
---
drivers/char/misc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 190d442..dd91726 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -193,8 +193,8 @@ int misc_register(struct miscdevice * misc)
if (misc->minor == MISC_DYNAMIC_MINOR) {
int i = find_first_zero_bit(misc_minors, DYNAMIC_MINORS);
if (i >= DYNAMIC_MINORS) {
- mutex_unlock(&misc_mtx);
- return -EBUSY;
+ err = -EBUSY;
+ goto out;
}
misc->minor = DYNAMIC_MINORS - i - 1;
set_bit(i, misc_minors);
@@ -203,8 +203,8 @@ int misc_register(struct miscdevice * misc)
list_for_each_entry(c, &misc_list, list) {
if (c->minor == misc->minor) {
- mutex_unlock(&misc_mtx);
- return -EBUSY;
+ err = -EBUSY;
+ goto out;
}
}
}
--
1.8.3.1
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