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Commit eace1953 authored by Ashok Vuyyuru's avatar Ashok Vuyyuru Committed by Gerrit - the friendly Code Review server
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msm: ipa4: Fix to exit from tasklet after processing max packet 



If TX packets processing continuously in tasklet other softIrqs
are not able to run on that core which is leading to watchdog
bark. For avoiding these scenarios exit from tasklet after
reaching max TX limit.

Change-Id: Ia5a8f20776b5cfdcb296311d72ffc48eda4970cf
Signed-off-by: default avatarAshok Vuyyuru <avuyyuru@codeaurora.org>
parent 136d1e1e

drivers/platform/msm/ipa/ipa_v3/ipa_dp.c

+11 −0
Original line number Diff line number Diff line
@@ -87,6 +87,8 @@ 


#define IPA_QMAP_ID_BYTE 0



#define IPA_TX_MAX_DESC (20)



static struct sk_buff *ipa3_get_skb_ipa_rx(unsigned int len, gfp_t flags);

static void ipa3_replenish_wlan_rx_cache(struct ipa3_sys_context *sys);

static void ipa3_replenish_rx_cache(struct ipa3_sys_context *sys);
@@ -212,6 +214,7 @@ static void ipa3_tasklet_write_done(unsigned long data) 
	struct ipa3_sys_context *sys;

	struct ipa3_tx_pkt_wrapper *this_pkt;

	bool xmit_done = false;

	unsigned int max_tx_pkt = 0;



	sys = (struct ipa3_sys_context *)data;

	spin_lock_bh(&sys->spinlock);
@@ -223,9 +226,17 @@ static void ipa3_tasklet_write_done(unsigned long data) 
			spin_unlock_bh(&sys->spinlock);

			ipa3_wq_write_done_common(sys, this_pkt);

			spin_lock_bh(&sys->spinlock);

			max_tx_pkt++;

			if (xmit_done)

				break;

		}

		/* If TX packets processing continuously in tasklet other

		 * softirqs are not able to run on that core which is leading

		 * to watchdog bark. For avoiding these scenarios exit from

		 * tasklet after reaching max limit.

		 */

		if (max_tx_pkt == IPA_TX_MAX_DESC)

			break;

	}

	spin_unlock_bh(&sys->spinlock);

}