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Merge "msm: ipa4: Fix to overcome KW issues"

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qctecmdr 2019-11-15 20:26:54 -08:00 • committed by Gerrit - the friendly Code Review server
commit 2c87407cf7
1 changed files with 11 additions and 1 deletions
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12
drivers/platform/msm/ipa/ipa_v3/ipa_nat.c
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@ -1367,14 +1367,24 @@ int ipa3_table_dma_cmd(struct ipa_ioc_nat_dma_cmd *dma)
int i;
struct ipahal_reg_valmask valmask;
struct ipahal_imm_cmd_register_write reg_write_coal_close;
int max_dma_table_cmds = IPA_MAX_NUM_OF_TABLE_DMA_CMD_DESC;
IPADBG("\n");
memset(desc, 0, sizeof(desc));
memset(cmd_pyld, 0, sizeof(cmd_pyld));
/**
* We use a descriptor for closing coalsceing endpoint
* by immediate command. So, DMA entries should be less than
* IPA_MAX_NUM_OF_TABLE_DMA_CMD_DESC - 1 to overcome
* buffer overflow of ipa3_desc array.
*/
if (ipa3_get_ep_mapping(IPA_CLIENT_APPS_WAN_COAL_CONS) != -1)
max_dma_table_cmds -= 1;
if (!dma->entries ||
dma->entries >= IPA_MAX_NUM_OF_TABLE_DMA_CMD_DESC) {
dma->entries > (max_dma_table_cmds - 1)) {
IPAERR_RL("Invalid number of entries %d\n",
dma->entries);
result = -EPERM;