diff options
| author | Michael Buesch <mb@bu3sch.de> | 2008-06-20 18:02:08 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-06-27 09:09:16 -0400 |
| commit | 923fd7036ff04381b265037469c79a2e7d0d6b67 (patch) | |
| tree | 885e8dc54e26b251187264cedce032d0e8c740b6 /drivers/net/wireless/b43/main.c | |
| parent | 9b839a7453dc7a25dbd367486017648182df541f (diff) | |
| download | lwn-923fd7036ff04381b265037469c79a2e7d0d6b67.tar.gz lwn-923fd7036ff04381b265037469c79a2e7d0d6b67.zip | |
b43: Add debugfs firmware debugging knob
This adds a firmware debugging knob to debugfs.
With this knob it's possible to enable advanced runtime firmware
checks.
For now it only implements one sanity check for the mac-suspend.
In future there'll probably be more.
If CONFIG_B43_DEBUG is disabled, these checks will collapse to nothing.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43/main.c')
| -rw-r--r-- | drivers/net/wireless/b43/main.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index c14d522d69e3..82cca19137f4 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -2487,6 +2487,19 @@ static void b43_gpio_cleanup(struct b43_wldev *dev) /* http://bcm-specs.sipsolutions.net/EnableMac */ void b43_mac_enable(struct b43_wldev *dev) { + if (b43_debug(dev, B43_DBG_FIRMWARE)) { + u16 fwstate; + + fwstate = b43_shm_read16(dev, B43_SHM_SHARED, + B43_SHM_SH_UCODESTAT); + if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) && + (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) { + b43err(dev->wl, "b43_mac_enable(): The firmware " + "should be suspended, but current state is %u\n", + fwstate); + } + } + dev->mac_suspended--; B43_WARN_ON(dev->mac_suspended < 0); if (dev->mac_suspended == 0) { |