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https://github.com/Divested-Mobile/DivestOS-Build.git
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59 lines
1.8 KiB
Diff
59 lines
1.8 KiB
Diff
From 34cff2eb2adc663de32ca682b57551c50c9253c6 Mon Sep 17 00:00:00 2001
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From: Skylar Chang <chiaweic@codeaurora.org>
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Date: Fri, 21 Apr 2017 10:42:57 -0700
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Subject: [PATCH] msm: ipa: fix IPC low priority logging
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Allocate IPC low priority on first usage only.
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Bug: 62827190
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Change-Id: Icea7f0fad9ed34c93641296f68736bbaf2e6eaa9
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CRs-Fixed: 2016076
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Acked-by: Ady Abraham <adya@qti,qualcomm.com>
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Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
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---
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drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c | 17 ++++++++---------
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1 file changed, 8 insertions(+), 9 deletions(-)
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diff --git a/drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c b/drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c
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index 12127a2304bbc..66482e2dc0634 100644
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--- a/drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c
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+++ b/drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c
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@@ -105,6 +105,7 @@ static char dbg_buff[IPA_MAX_MSG_LEN];
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static char *active_clients_buf;
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static s8 ep_reg_idx;
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+static void *ipa_ipc_low_buff;
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static ssize_t ipa3_read_gen_reg(struct file *file, char __user *ubuf,
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@@ -1610,22 +1611,20 @@ static ssize_t ipa3_enable_ipc_low(struct file *file,
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if (kstrtos8(dbg_buff, 0, &option))
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return -EFAULT;
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+ mutex_lock(&ipa3_ctx->lock);
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if (option) {
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- if (!ipa3_ctx->logbuf_low) {
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- ipa3_ctx->logbuf_low =
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+ if (!ipa_ipc_low_buff) {
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+ ipa_ipc_low_buff =
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ipc_log_context_create(IPA_IPC_LOG_PAGES,
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"ipa_low", 0);
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}
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-
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- if (ipa3_ctx->logbuf_low == NULL) {
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- IPAERR("failed to get logbuf_low\n");
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- return -EFAULT;
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- }
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+ if (ipa_ipc_low_buff == NULL)
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+ IPAERR("failed to get logbuf_low\n");
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+ ipa3_ctx->logbuf_low = ipa_ipc_low_buff;
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} else {
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- if (ipa3_ctx->logbuf_low)
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- ipc_log_context_destroy(ipa3_ctx->logbuf_low);
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ipa3_ctx->logbuf_low = NULL;
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}
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+ mutex_unlock(&ipa3_ctx->lock);
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return count;
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}
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