kevin/linux
1
Fork 0
Code

s390/net: lcs: use IS_ENABLED() for kconfig detection

Browse Source 
When CONFIG_ETHERNET=m or CONFIG_FDDI=m, lcs.s has build errors or
warnings:

../drivers/s390/net/lcs.c:40:2: error: #error Cannot compile lcs.c without some net devices switched on.
   40 | #error Cannot compile lcs.c without some net devices switched on.
../drivers/s390/net/lcs.c: In function 'lcs_startlan_auto':
../drivers/s390/net/lcs.c:1601:13: warning: unused variable 'rc' [-Wunused-variable]
 1601 |         int rc;

Solve this by using IS_ENABLED(CONFIG_symbol) instead of ifdef
CONFIG_symbol. The latter only works for builtin (=y) values
while IS_ENABLED() works for builtin or modular values.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Alexandra Winter <wintera@linux.ibm.com>
Cc: Wenjia Zhang <wenjia@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Randy Dunlap 2023-06-15 15:21:52 -07:00 committed by David S. Miller
parent 18da174d86
commit 1282723361
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/s390/net/lcs.c
View File

@ -36,7 +36,7 @@
#include "lcs.h"
#if !defined(CONFIG_ETHERNET) && !defined(CONFIG_FDDI)
#if !IS_ENABLED(CONFIG_ETHERNET) && !IS_ENABLED(CONFIG_FDDI)
#error Cannot compile lcs.c without some net devices switched on.
#endif
@ -1601,14 +1601,14 @@ lcs_startlan_auto(struct lcs_card *card)
int rc;
LCS_DBF_TEXT(2, trace, "strtauto");
#ifdef CONFIG_ETHERNET
#if IS_ENABLED(CONFIG_ETHERNET)
card->lan_type = LCS_FRAME_TYPE_ENET;
rc = lcs_send_startlan(card, LCS_INITIATOR_TCPIP);
if (rc == 0)
return 0;
#endif
#ifdef CONFIG_FDDI
#if IS_ENABLED(CONFIG_FDDI)
card->lan_type = LCS_FRAME_TYPE_FDDI;
rc = lcs_send_startlan(card, LCS_INITIATOR_TCPIP);
if (rc == 0)
@ -2139,13 +2139,13 @@ lcs_new_device(struct ccwgroup_device *ccwgdev)
goto netdev_out;
}
switch (card->lan_type) {
#ifdef CONFIG_ETHERNET
#if IS_ENABLED(CONFIG_ETHERNET)
case LCS_FRAME_TYPE_ENET:
card->lan_type_trans = eth_type_trans;
dev = alloc_etherdev(0);
break;
#endif
#ifdef CONFIG_FDDI
#if IS_ENABLED(CONFIG_FDDI)
case LCS_FRAME_TYPE_FDDI:
card->lan_type_trans = fddi_type_trans;
dev = alloc_fddidev(0);