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Merge "ipa: fix ipa3_send_nop_desc locking before alloc"

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qctecmdr 2020-07-08 11:24:26 -07:00 • committed by Gerrit - the friendly Code Review server
commit 9888de5027
1 changed files with 3 additions and 2 deletions
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5
drivers/platform/msm/ipa/ipa_v3/ipa_dp.c
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@ -313,6 +313,7 @@ static void ipa3_send_nop_desc(struct work_struct *work)
IPADBG_LOW("gsi send NOP for ch: %lu\n", sys->ep->gsi_chan_hdl);
if (atomic_read(&sys->workqueue_flushed))
return;
spin_lock_bh(&sys->spinlock);
if (!list_empty(&sys->avail_tx_wrapper_list)) {
tx_pkt = list_first_entry(&sys->avail_tx_wrapper_list,
@ -321,8 +322,10 @@ static void ipa3_send_nop_desc(struct work_struct *work)
sys->avail_tx_wrapper--;
memset(tx_pkt, 0, sizeof(struct ipa3_tx_pkt_wrapper));
} else {
spin_unlock_bh(&sys->spinlock);
tx_pkt = kmem_cache_zalloc(ipa3_ctx->tx_pkt_wrapper_cache,
GFP_KERNEL);
spin_lock_bh(&sys->spinlock);
}
if (!tx_pkt) {
spin_unlock_bh(&sys->spinlock);
@ -358,7 +361,6 @@ static void ipa3_send_nop_desc(struct work_struct *work)
/* make sure TAG process is sent before clocks are gated */
ipa3_ctx->tag_process_before_gating = true;
}
@ -566,7 +568,6 @@ int ipa3_send(struct ipa3_sys_context *sys,
/* set the timer for sending the NOP descriptor */
if (send_nop) {
ktime_t time = ktime_set(0, IPA_TX_SEND_COMPL_NOP_DELAY_NS);
IPADBG_LOW("scheduling timer for ch %lu\n",