pccard_store_cis: fix wrong error handling
The test for the error from pcmcia_replace_cis() was incorrect, and
would always trigger (because if an error didn't happen, the "ret" value
would not be zero, it would be the passed-in count).
Reported and debugged by Fabrice Bellet <fabrice@bellet.info>
Rather than just fix the single broken test, make the code in question
use an understandable code-sequence instead, fixing the whole function
to be more readable.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c
index c5d7476..933cd86 100644
--- a/drivers/pcmcia/socket_sysfs.c
+++ b/drivers/pcmcia/socket_sysfs.c
@@ -298,7 +298,7 @@
{
struct pcmcia_socket *s = to_socket(container_of(kobj, struct class_device, kobj));
cisdump_t *cis;
- ssize_t ret = count;
+ int error;
if (off)
return -EINVAL;
@@ -316,25 +316,22 @@
cis->Length = count + 1;
memcpy(cis->Data, buf, count);
- if (pcmcia_replace_cis(s, cis))
- ret = -EIO;
-
+ error = pcmcia_replace_cis(s, cis);
kfree(cis);
+ if (error)
+ return -EIO;
- if (!ret) {
- mutex_lock(&s->skt_mutex);
- if ((s->callback) && (s->state & SOCKET_PRESENT) &&
- !(s->state & SOCKET_CARDBUS)) {
- if (try_module_get(s->callback->owner)) {
- s->callback->requery(s);
- module_put(s->callback->owner);
- }
+ mutex_lock(&s->skt_mutex);
+ if ((s->callback) && (s->state & SOCKET_PRESENT) &&
+ !(s->state & SOCKET_CARDBUS)) {
+ if (try_module_get(s->callback->owner)) {
+ s->callback->requery(s);
+ module_put(s->callback->owner);
}
- mutex_unlock(&s->skt_mutex);
}
+ mutex_unlock(&s->skt_mutex);
-
- return (ret);
+ return count;
}