diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 5fec30e542cb..82066a223a67 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1269,67 +1269,6 @@ static void ipa_endpoint_reset(struct ipa_endpoint *endpoint) ret, endpoint->channel_id, endpoint->endpoint_id); } -static int ipa_endpoint_stop_rx_dma(struct ipa *ipa) -{ - u16 size = IPA_ENDPOINT_STOP_RX_SIZE; - struct gsi_trans *trans; - dma_addr_t addr; - int ret; - - trans = ipa_cmd_trans_alloc(ipa, 1); - if (!trans) { - dev_err(&ipa->pdev->dev, - "no transaction for RX endpoint STOP workaround\n"); - return -EBUSY; - } - - /* Read into the highest part of the zero memory area */ - addr = ipa->zero_addr + ipa->zero_size - size; - - ipa_cmd_dma_task_32b_addr_add(trans, size, addr, false); - - ret = gsi_trans_commit_wait_timeout(trans, ENDPOINT_STOP_DMA_TIMEOUT); - if (ret) - gsi_trans_free(trans); - - return ret; -} - -/** - * ipa_endpoint_stop() - Stops a GSI channel in IPA - * @client: Client whose endpoint should be stopped - * - * This function implements the sequence to stop a GSI channel - * in IPA. This function returns when the channel is is STOP state. - * - * Return value: 0 on success, negative otherwise - */ -int ipa_endpoint_stop(struct ipa_endpoint *endpoint) -{ - u32 retries = IPA_ENDPOINT_STOP_RX_RETRIES; - int ret; - - do { - struct ipa *ipa = endpoint->ipa; - struct gsi *gsi = &ipa->gsi; - - ret = gsi_channel_stop(gsi, endpoint->channel_id); - if (ret != -EAGAIN || endpoint->toward_ipa) - break; - - /* For IPA v3.5.1, send a DMA read task and check again */ - if (ipa->version == IPA_VERSION_3_5_1) { - ret = ipa_endpoint_stop_rx_dma(ipa); - if (ret) - break; - } - - msleep(1); - } while (retries--); - - return retries ? ret : -EIO; -} - static void ipa_endpoint_program(struct ipa_endpoint *endpoint) { if (endpoint->toward_ipa) { |