diff options
| author | Utkarsh Saxena <usaxena@codeaurora.org> | 2017-04-26 15:06:09 +0530 |
|---|---|---|
| committer | Utkarsh Saxena <usaxena@codeaurora.org> | 2017-04-26 15:06:09 +0530 |
| commit | 36dfd739610cf8829f054af25a3b2f57854778e1 (patch) | |
| tree | d5992ffe6c53c3211802f9e7775d1e5c008c2d93 /drivers/platform/msm | |
| parent | 172210b6bf2572b851f07a90e1d360cf2c3a4293 (diff) | |
msm: ipa: Fix race condition between shared memory
Protect the common shared wlan_comm_desc_list with
spin lock to avoid the race condition.
Change-Id: I02ef6c6b663340711e0e2f766424d642aaa8d7af
Acked-by: Mohammed Javid <mjavid@qti.qualcomm.com>
Signed-off-by: Utkarsh Saxena <usaxena@codeaurora.org>
Diffstat (limited to 'drivers/platform/msm')
| -rw-r--r-- | drivers/platform/msm/ipa/ipa_v2/ipa_dp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c b/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c index 2fdb20d99ce2..23c8a5059c3b 100644 --- a/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c +++ b/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c @@ -2046,11 +2046,13 @@ static void ipa_alloc_wlan_rx_common_cache(u32 size) goto fail_dma_mapping; } + spin_lock_bh(&ipa_ctx->wc_memb.wlan_spinlock); list_add_tail(&rx_pkt->link, &ipa_ctx->wc_memb.wlan_comm_desc_list); rx_len_cached = ++ipa_ctx->wc_memb.wlan_comm_total_cnt; ipa_ctx->wc_memb.wlan_comm_free_cnt++; + spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock); } |