diff options
| author | Skylar Chang <chiaweic@codeaurora.org> | 2016-11-01 16:48:30 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-11-04 13:27:42 -0700 |
| commit | 388eea86fed7c66861bbd4ad39f33750da5ed96e (patch) | |
| tree | 33e787c4992a7f16c10d163228d90a9e04a2ccfe | |
| parent | 758693b4a6d94a0724081578d24f6ba1cc449255 (diff) | |
msm: ipa: fix division by 0 for DMA pipes
For DMA pipes, bufer size is 0. This commit fixes a
division by 0 in kernel when connecting DMA pipes.
Change-Id: I11551594e5115e71aa116cc7238953205a4118c3
CRs-Fixed: 1085266
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
| -rw-r--r-- | drivers/platform/msm/ipa/ipa_v2/ipa_dp.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c b/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c index 3c2a6d4620ba..7e15bcfc84ff 100644 --- a/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c +++ b/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c @@ -1165,8 +1165,11 @@ void ipa_update_repl_threshold(enum ipa_client_type ipa_client) * Determine how many buffers/descriptors remaining will * cause to drop below the yellow WM bar. */ - ep->rx_replenish_threshold = ipa_get_sys_yellow_wm(ep->sys) - / ep->sys->rx_buff_sz; + if (ep->sys->rx_buff_sz) + ep->rx_replenish_threshold = ipa_get_sys_yellow_wm(ep->sys) + / ep->sys->rx_buff_sz; + else + ep->rx_replenish_threshold = 0; } /** @@ -1361,8 +1364,11 @@ int ipa2_setup_sys_pipe(struct ipa_sys_connect_params *sys_in, u32 *clnt_hdl) * Determine how many buffers/descriptors remaining will * cause to drop below the yellow WM bar. */ - ep->rx_replenish_threshold = ipa_get_sys_yellow_wm(ep->sys) - / ep->sys->rx_buff_sz; + if (ep->sys->rx_buff_sz) + ep->rx_replenish_threshold = + ipa_get_sys_yellow_wm(ep->sys) / ep->sys->rx_buff_sz; + else + ep->rx_replenish_threshold = 0; /* Only when the WAN pipes are setup, actual threshold will * be read from the register. So update LAN_CONS ep again with * right value. |