diff options
| author | Joel Becker <joel.becker@oracle.com> | 2010-04-30 13:37:29 -0700 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-04-30 13:37:29 -0700 |
| commit | f9221fd80343285514568da6c5dbda0f87109de8 (patch) | |
| tree | 3a2f0077ebea9d094bdeedb319c97cb591d51c51 /drivers/net/wireless/iwlwifi/iwl-calib.c | |
| parent | a36d515c7a2dfacebcf41729f6812dbc424ebcf0 (diff) | |
| parent | a9743fcdc0eb43d028b71267438076e1b0112ba0 (diff) | |
Merge branch 'skip_delete_inode' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2-mark into ocfs2-fixes
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-calib.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-calib.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-calib.c b/drivers/net/wireless/iwlwifi/iwl-calib.c index 845831ac053..8b516c5ff0b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-calib.c +++ b/drivers/net/wireless/iwlwifi/iwl-calib.c @@ -60,6 +60,7 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *****************************************************************************/ +#include <linux/slab.h> #include <net/mac80211.h> #include "iwl-dev.h" @@ -807,6 +808,18 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv, } } + /* + * The above algorithm sometimes fails when the ucode + * reports 0 for all chains. It's not clear why that + * happens to start with, but it is then causing trouble + * because this can make us enable more chains than the + * hardware really has. + * + * To be safe, simply mask out any chains that we know + * are not on the device. + */ + active_chains &= priv->hw_params.valid_rx_ant; + num_tx_chains = 0; for (i = 0; i < NUM_RX_CHAINS; i++) { /* loops on all the bits of |