evie/android_kernel_oneplus_msm8998
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msm: ipa: add retry to channel stop

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Add a retry mechanism when trying to stop a producer pipe.
This is to avoid a timeout on stop channel when IPA is busy.

Change-Id: If9e0df976def1195171730624e02c185142e2964
CRs-Fixed: 2024084
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
This commit is contained in:
Skylar Chang 2017-03-23 16:17:14 -07:00
parent 630218f710
commit b07874c6eb
1 changed files with 8 additions and 11 deletions
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19
drivers/platform/msm/ipa/ipa_v3/ipa_utils.c
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@ -3565,11 +3565,6 @@ int ipa3_stop_gsi_channel(u32 clnt_hdl)
memset(&mem, 0, sizeof(mem));
if (IPA_CLIENT_IS_PROD(ep->client)) {
res = gsi_stop_channel(ep->gsi_chan_hdl);
goto end_sequence;
}
for (i = 0; i < IPA_GSI_CHANNEL_STOP_MAX_RETRY; i++) {
IPADBG("Calling gsi_stop_channel\n");
res = gsi_stop_channel(ep->gsi_chan_hdl);
@ -3577,12 +3572,14 @@ int ipa3_stop_gsi_channel(u32 clnt_hdl)
if (res != -GSI_STATUS_AGAIN && res != -GSI_STATUS_TIMED_OUT)
goto end_sequence;
IPADBG("Inject a DMA_TASK with 1B packet to IPA and retry\n");
/* Send a 1B packet DMA_TASK to IPA and try again */
res = ipa3_inject_dma_task_for_gsi();
if (res) {
IPAERR("Failed to inject DMA TASk for GSI\n");
goto end_sequence;
if (IPA_CLIENT_IS_CONS(ep->client)) {
IPADBG("Inject a DMA_TASK with 1B packet to IPA\n");
/* Send a 1B packet DMA_TASK to IPA and try again */
res = ipa3_inject_dma_task_for_gsi();
if (res) {
IPAERR("Failed to inject DMA TASk for GSI\n");
goto end_sequence;
}
}
/* sleep for short period to flush IPA */