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tg3: unconditionally select HWMON support when tg3 is enabled.

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There is the seldom used corner case where HWMON=m at the same
time as TIGON3=y (typically randconfigs) which will cause a link
fail like:

drivers/built-in.o: In function `tg3_close':
tg3.c:(.text+0x16bd86): undefined reference to `hwmon_device_unregister'
drivers/built-in.o: In function `tg3_hwmon_open':
tg3.c:(.text+0x16fc4b): undefined reference to `hwmon_device_register'
make[1]: *** [vmlinux] Error 1

Fix it as suggested by DaveM[1] by having the Kconfig logic simply
select HWMON when TIGON3 is selected.  This gets rid of all the
extra IS_ENABLED ifdeffery in tg3.c as a side benefit.

[1] http://marc.info/?l=linux-netdev&m=134250573718151&w=2

Cc: Michael Chan <mchan@broadcom.com>
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reported-by: Anisse Astier <anisse@astier.eu>
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Gortmaker 2012-10-01 11:43:49 -04:00 committed by David S. Miller
parent d4e6264827
commit de0a41484c
2 changed files with 1 additions and 9 deletions
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1
drivers/net/ethernet/broadcom/Kconfig
View File

@ -101,6 +101,7 @@ config TIGON3
tristate "Broadcom Tigon3 support"
depends on PCI
select PHYLIB
select HWMON
---help---
This driver supports Broadcom Tigon3 based gigabit Ethernet cards.

9
drivers/net/ethernet/broadcom/tg3.c
View File

@ -44,10 +44,8 @@
#include <linux/prefetch.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>
#if IS_ENABLED(CONFIG_HWMON)
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#endif
#include <net/checksum.h>
#include <net/ip.h>
@ -9594,7 +9592,6 @@ static int tg3_init_hw(struct tg3 *tp, int reset_phy)
return tg3_reset_hw(tp, reset_phy);
}
#if IS_ENABLED(CONFIG_HWMON)
static void tg3_sd_scan_scratchpad(struct tg3 *tp, struct tg3_ocir *ocir)
{
int i;
@ -9647,22 +9644,17 @@ static const struct attribute_group tg3_group = {
.attrs = tg3_attributes,
};
#endif
static void tg3_hwmon_close(struct tg3 *tp)
{
#if IS_ENABLED(CONFIG_HWMON)
if (tp->hwmon_dev) {
hwmon_device_unregister(tp->hwmon_dev);
tp->hwmon_dev = NULL;
sysfs_remove_group(&tp->pdev->dev.kobj, &tg3_group);
}
#endif
}
static void tg3_hwmon_open(struct tg3 *tp)
{
#if IS_ENABLED(CONFIG_HWMON)
int i, err;
u32 size = 0;
struct pci_dev *pdev = tp->pdev;
@ -9694,7 +9686,6 @@ static void tg3_hwmon_open(struct tg3 *tp)
dev_err(&pdev->dev, "Cannot register hwmon device, aborting\n");
sysfs_remove_group(&pdev->dev.kobj, &tg3_group);
}
#endif
}