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iwlwifi: pcie: fix the set of DMA memory mask

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commit 2c6262b754f3c3338cb40b23880a3ac1f4693b25 upstream.

Our 9000 device supports 64 bit DMA address for RX only, and
not for TX.
Setting DMA mask to 64 for the whole device is erroneous - we
can do it only for a000 devices where device is capable of
both RX & TX DMA with 64 bit address space.

Fixes: 96a6497bc3ed ("iwlwifi: pcie: add 9000 series multi queue rx DMA support")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sara Sharon 2016-12-07 12:22:11 +02:00 committed by Greg Kroah-Hartman
parent 562c868d94
commit 20a9de99a0
1 changed files with 2 additions and 6 deletions
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8
drivers/net/wireless/intel/iwlwifi/pcie/trans.c
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@ -2929,16 +2929,12 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
PCIE_LINK_STATE_CLKPM);
}
if (cfg->mq_rx_supported)
addr_size = 64;
else
addr_size = 36;
if (cfg->use_tfh) {
addr_size = 64;
trans_pcie->max_tbs = IWL_TFH_NUM_TBS;
trans_pcie->tfd_size = sizeof(struct iwl_tfh_tfd);
} else {
addr_size = 36;
trans_pcie->max_tbs = IWL_NUM_OF_TBS;
trans_pcie->tfd_size = sizeof(struct iwl_tfd);
}