diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2019-07-21 14:02:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-16 11:13:58 +0300 |
| commit | 5557083f8577fb2d36862b46a405d37ecd54ffff (patch) | |
| tree | 767250a9ca0d6db6e4d1437ee44751c88b6ce4a5 | |
| parent | c12ea355ef01fc3fe90500cd6da0940e3218e740 (diff) | |
| download | linux-5557083f8577fb2d36862b46a405d37ecd54ffff.tar.xz | |
iwlwifi: don't unmap as page memory that was mapped as single
commit 87e7e25aee6b59fef740856f4e86d4b60496c9e1 upstream.
In order to remember how to unmap a memory (as single or
as page), we maintain a bit per Transmit Buffer (TBs) in
the meta data (structure iwl_cmd_meta).
We maintain a bitmap: 1 bit per TB.
If the TB is set, we will free the memory as a page.
This bitmap was never cleared. Fix this.
Cc: stable@vger.kernel.org
Fixes: 3cd1980b0cdf ("iwlwifi: pcie: introduce new tfd and tb formats")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index 4704137a26e0..c3a2e6b6da65 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -401,6 +401,8 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans, DMA_TO_DEVICE); } + meta->tbs = 0; + if (trans->cfg->use_tfh) { struct iwl_tfh_tfd *tfd_fh = (void *)tfd; |