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iwlwifi: pcie: free IML DMA memory allocation

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[ Upstream commit 310f60f53a ]

In the case of gen3 devices with image loader (IML) support,
we were leaking the IML DMA allocation and never freeing it.
Fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618105614.07e117dbedb7.I7bb9ebbe0617656986c2a598ea5e827b533bd3b9@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Johannes Berg 2021-06-18 11:01:16 +03:00 committed by Greg Kroah-Hartman
parent 78eadadff3
commit b98ec6d8b3
2 changed files with 13 additions and 5 deletions
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15
drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
View file

@ -126,7 +126,6 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
struct iwl_prph_scratch *prph_scratch;
struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl;
struct iwl_prph_info *prph_info;
void *iml_img;
u32 control_flags = 0;
int ret;
int cmdq_size = max_t(u32, IWL_CMD_QUEUE_SIZE,
@ -234,14 +233,15 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
trans_pcie->prph_scratch = prph_scratch;
/* Allocate IML */
iml_img = dma_alloc_coherent(trans->dev, trans->iml_len,
&trans_pcie->iml_dma_addr, GFP_KERNEL);
if (!iml_img) {
trans_pcie->iml = dma_alloc_coherent(trans->dev, trans->iml_len,
&trans_pcie->iml_dma_addr,
GFP_KERNEL);
if (!trans_pcie->iml) {
ret = -ENOMEM;
goto err_free_ctxt_info;
}
memcpy(iml_img, trans->iml, trans->iml_len);
memcpy(trans_pcie->iml, trans->iml, trans->iml_len);
iwl_enable_fw_load_int_ctx_info(trans);
@ -290,6 +290,11 @@ void iwl_pcie_ctxt_info_gen3_free(struct iwl_trans *trans)
trans_pcie->ctxt_info_dma_addr = 0;
trans_pcie->ctxt_info_gen3 = NULL;
dma_free_coherent(trans->dev, trans->iml_len, trans_pcie->iml,
trans_pcie->iml_dma_addr);
trans_pcie->iml_dma_addr = 0;
trans_pcie->iml = NULL;
iwl_pcie_ctxt_info_free_fw_img(trans);
dma_free_coherent(trans->dev, sizeof(*trans_pcie->prph_scratch),

3
drivers/net/wireless/intel/iwlwifi/pcie/internal.h
View file

@ -336,6 +336,8 @@ struct cont_rec {
* Context information addresses will be taken from here.
* This is driver's local copy for keeping track of size and
* count for allocating and freeing the memory.
* @iml: image loader image virtual address
* @iml_dma_addr: image loader image DMA address
* @trans: pointer to the generic transport area
* @scd_base_addr: scheduler sram base address in SRAM
* @kw: keep warm address
@ -388,6 +390,7 @@ struct iwl_trans_pcie {
};
struct iwl_prph_info *prph_info;
struct iwl_prph_scratch *prph_scratch;
void *iml;
dma_addr_t ctxt_info_dma_addr;
dma_addr_t prph_info_dma_addr;
dma_addr_t prph_scratch_dma_addr;