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https://github.com/Divested-Mobile/DivestOS-Build.git
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61 lines
1.8 KiB
Diff
61 lines
1.8 KiB
Diff
From 8f1a77f5da53edd2b5a1c42ddd766712a90109d6 Mon Sep 17 00:00:00 2001
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From: Skylar Chang <chiaweic@codeaurora.org>
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Date: Thu, 20 Apr 2017 10:25:43 -0700
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Subject: msm: gsi: fix IPC low priority logging
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Allocate IPC low priority on first usage only.
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Change-Id: Ic44f5af02d1d7fd72b255c8989cfc6b7dcd7766d
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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/gsi/gsi_dbg.c | 17 ++++++++---------
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1 file changed, 8 insertions(+), 9 deletions(-)
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diff --git a/drivers/platform/msm/gsi/gsi_dbg.c b/drivers/platform/msm/gsi/gsi_dbg.c
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index 717c8917..eaf50ca 100644
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--- a/drivers/platform/msm/gsi/gsi_dbg.c
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+++ b/drivers/platform/msm/gsi/gsi_dbg.c
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@@ -29,6 +29,7 @@
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static struct dentry *dent;
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static char dbg_buff[4096];
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+static void *gsi_ipc_logbuf_low;
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static void gsi_wq_print_dp_stats(struct work_struct *work);
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static DECLARE_DELAYED_WORK(gsi_print_dp_stats_work, gsi_wq_print_dp_stats);
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@@ -764,22 +765,20 @@ static ssize_t gsi_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(&gsi_ctx->mlock);
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if (option) {
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- if (!gsi_ctx->ipc_logbuf_low) {
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- gsi_ctx->ipc_logbuf_low =
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+ if (!gsi_ipc_logbuf_low) {
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+ gsi_ipc_logbuf_low =
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ipc_log_context_create(GSI_IPC_LOG_PAGES,
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"gsi_low", 0);
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+ if (gsi_ipc_logbuf_low == NULL)
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+ TERR("failed to get ipc_logbuf_low\n");
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}
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-
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- if (gsi_ctx->ipc_logbuf_low == NULL) {
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- TERR("failed to get ipc_logbuf_low\n");
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- return -EFAULT;
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- }
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+ gsi_ctx->ipc_logbuf_low = gsi_ipc_logbuf_low;
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} else {
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- if (gsi_ctx->ipc_logbuf_low)
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- ipc_log_context_destroy(gsi_ctx->ipc_logbuf_low);
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gsi_ctx->ipc_logbuf_low = NULL;
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}
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+ mutex_unlock(&gsi_ctx->mlock);
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return count;
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}
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--
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cgit v1.1
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