From 5bfc43a0b65a11ca1e9edfa0c2bd34ce43da0346 Mon Sep 17 00:00:00 2001
From: Bjorn Helgaas <bjorn.helgaas@hp.com>
Date: Tue, 16 Oct 2007 23:31:09 -0700
Subject: [PATCH] PNP: simplify PNP card error handling
No functional change; just return errors early instead of putting the main
part of the function inside an "if" statement.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/pnp/card.c | 57 +++++++++++++++++++++++-----------------------
1 file changed, 29 insertions(+), 28 deletions(-)
diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index fae28913f4599..3b48aef8f4ebe 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -197,33 +197,34 @@ int pnp_add_card(struct pnp_card *card)
card->dev.bus = NULL;
card->dev.release = &pnp_release_card;
error = device_register(&card->dev);
-
- if (error == 0) {
- pnp_interface_attach_card(card);
- spin_lock(&pnp_lock);
- list_add_tail(&card->global_list, &pnp_cards);
- list_add_tail(&card->protocol_list, &card->protocol->cards);
- spin_unlock(&pnp_lock);
-
- /* we wait until now to add devices in order to ensure the drivers
- * will be able to use all of the related devices on the card
- * without waiting any unresonable length of time */
- list_for_each(pos, &card->devices) {
- struct pnp_dev *dev = card_to_pnp_dev(pos);
- __pnp_add_device(dev);
- }
-
- /* match with card drivers */
- list_for_each_safe(pos, temp, &pnp_card_drivers) {
- struct pnp_card_driver *drv =
- list_entry(pos, struct pnp_card_driver,
- global_list);
- card_probe(card, drv);
- }
- } else
+ if (error) {
pnp_err("sysfs failure, card '%s' will be unavailable",
card->dev.bus_id);
- return error;
+ return error;
+ }
+
+ pnp_interface_attach_card(card);
+ spin_lock(&pnp_lock);
+ list_add_tail(&card->global_list, &pnp_cards);
+ list_add_tail(&card->protocol_list, &card->protocol->cards);
+ spin_unlock(&pnp_lock);
+
+ /* we wait until now to add devices in order to ensure the drivers
+ * will be able to use all of the related devices on the card
+ * without waiting an unreasonable length of time */
+ list_for_each(pos, &card->devices) {
+ struct pnp_dev *dev = card_to_pnp_dev(pos);
+ __pnp_add_device(dev);
+ }
+
+ /* match with card drivers */
+ list_for_each_safe(pos, temp, &pnp_card_drivers) {
+ struct pnp_card_driver *drv =
+ list_entry(pos, struct pnp_card_driver,
+ global_list);
+ card_probe(card, drv);
+ }
+ return 0;
}
/**
@@ -291,14 +292,15 @@ struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
struct pnp_card *card;
if (!clink || !id)
- goto done;
+ return NULL;
+
card = clink->card;
drv = clink->driver;
if (!from) {
pos = card->devices.next;
} else {
if (from->card != card)
- goto done;
+ return NULL;
pos = from->card_list.next;
}
while (pos != &card->devices) {
@@ -308,7 +310,6 @@ struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
pos = pos->next;
}
-done:
return NULL;
found:
--
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