iwlwifi: pcie: fix memory leaks in iwl_pcie_ctxt_info_gen3_init

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In iwl_pcie_ctxt_info_gen3_init there are cases that the allocated dma
memory is leaked in case of error.

DMA memories prph_scratch, prph_info, and ctxt_info_gen3 are allocated
and initialized to be later assigned to trans_pcie. But in any error case
before such assignment the allocated memories should be released.

First of such error cases happens when iwl_pcie_init_fw_sec fails.
Current implementation correctly releases prph_scratch. But in two
sunsequent error cases where dma_alloc_coherent may fail, such
releases are missing.

This commit adds release for prph_scratch when allocation for
prph_info fails, and adds releases for prph_scratch and prph_info when
allocation for ctxt_info_gen3 fails.

Fixes: 2ee8240262 ("iwlwifi: pcie: support context information for 22560 devices")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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This commit is contained in:

Navid Emamdoost 2019-09-27 15:56:04 -05:00 • committed by Luca Coelho

parent b4b814fec1

commit 0f4f199443

1 changed files with 25 additions and 11 deletions

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drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c

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