Commit 3aebe54b authored by Kalle Valo's avatar Kalle Valo
Browse files

ath10k: convert ath10k_pci_wake() to return 



We should not try to access hw if wakeup fails so add
proper error checking for that. Also add the timeout lenght
to the warning message.

Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent a40d3e42

drivers/net/wireless/ath/ath10k/ce.c

+34 −9
Original line number Diff line number Diff line
@@ -277,7 +277,9 @@ static int ath10k_ce_send_nolock(struct ath10k_ce_pipe *ce_state, 
		ath10k_warn("%s: send more we can (nbytes: %d, max: %d)\n",

			    __func__, nbytes, ce_state->src_sz_max);



	ath10k_pci_wake(ar);

	ret = ath10k_pci_wake(ar);

	if (ret)

		return ret;



	if (unlikely(CE_RING_DELTA(nentries_mask,

				   write_index, sw_index - 1) <= 0)) {
@@ -419,7 +421,9 @@ int ath10k_ce_recv_buf_enqueue(struct ath10k_ce_pipe *ce_state, 
	write_index = dest_ring->write_index;

	sw_index = dest_ring->sw_index;



	ath10k_pci_wake(ar);

	ret = ath10k_pci_wake(ar);

	if (ret)

		goto out;



	if (CE_RING_DELTA(nentries_mask, write_index, sw_index - 1) > 0) {

		struct ce_desc *base = dest_ring->base_addr_owner_space;
@@ -441,6 +445,8 @@ int ath10k_ce_recv_buf_enqueue(struct ath10k_ce_pipe *ce_state, 
		ret = -EIO;

	}

	ath10k_pci_sleep(ar);



out:

	spin_unlock_bh(&ar_pci->ce_lock);



	return ret;
@@ -596,6 +602,7 @@ static int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state, 
	unsigned int sw_index = src_ring->sw_index;

	struct ce_desc *sdesc, *sbase;

	unsigned int read_index;

	int ret;



	if (src_ring->hw_index == sw_index) {

		/*
@@ -605,10 +612,15 @@ static int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state, 
		 * the SW has really caught up to the HW, or if the cached

		 * value of the HW index has become stale.

		 */

		ath10k_pci_wake(ar);



		ret = ath10k_pci_wake(ar);

		if (ret)

			return ret;



		src_ring->hw_index =

			ath10k_ce_src_ring_read_index_get(ar, ctrl_addr);

		src_ring->hw_index &= nentries_mask;



		ath10k_pci_sleep(ar);

	}
@@ -735,8 +747,12 @@ void ath10k_ce_per_engine_service(struct ath10k *ar, unsigned int ce_id) 
	unsigned int nbytes;

	unsigned int id;

	unsigned int flags;

	int ret;



	ret = ath10k_pci_wake(ar);

	if (ret)

		return;



	ath10k_pci_wake(ar);

	spin_lock_bh(&ar_pci->ce_lock);



	/* Clear the copy-complete interrupts that will be handled here. */
@@ -795,10 +811,13 @@ void ath10k_ce_per_engine_service(struct ath10k *ar, unsigned int ce_id) 
void ath10k_ce_per_engine_service_any(struct ath10k *ar)

{

	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);

	int ce_id;

	int ce_id, ret;

	u32 intr_summary;



	ath10k_pci_wake(ar);

	ret = ath10k_pci_wake(ar);

	if (ret)

		return;



	intr_summary = CE_INTERRUPT_SUMMARY(ar);



	for (ce_id = 0; intr_summary && (ce_id < ar_pci->ce_count); ce_id++) {
@@ -826,8 +845,11 @@ static void ath10k_ce_per_engine_handler_adjust(struct ath10k_ce_pipe *ce_state, 
{

	u32 ctrl_addr = ce_state->ctrl_addr;

	struct ath10k *ar = ce_state->ar;

	int ret;



	ath10k_pci_wake(ar);

	ret = ath10k_pci_wake(ar);

	if (ret)

		return;



	if ((!disable_copy_compl_intr) &&

	    (ce_state->send_cb || ce_state->recv_cb))
@@ -843,9 +865,12 @@ static void ath10k_ce_per_engine_handler_adjust(struct ath10k_ce_pipe *ce_state, 
void ath10k_ce_disable_interrupts(struct ath10k *ar)

{

	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);

	int ce_id;

	int ce_id, ret;



	ret = ath10k_pci_wake(ar);

	if (ret)

		return;



	ath10k_pci_wake(ar);

	for (ce_id = 0; ce_id < ar_pci->ce_count; ce_id++) {

		struct ath10k_ce_pipe *ce_state = &ar_pci->ce_states[ce_id];

		u32 ctrl_addr = ce_state->ctrl_addr;

drivers/net/wireless/ath/ath10k/pci.c

+6 −5
Original line number Diff line number Diff line
@@ -537,7 +537,7 @@ static void ath10k_pci_wait(struct ath10k *ar) 
		ath10k_warn("Unable to wakeup target\n");

}



void ath10k_do_pci_wake(struct ath10k *ar)

int ath10k_do_pci_wake(struct ath10k *ar)

{

	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);

	void __iomem *pci_addr = ar_pci->mem;
@@ -553,18 +553,19 @@ void ath10k_do_pci_wake(struct ath10k *ar) 
	atomic_inc(&ar_pci->keep_awake_count);



	if (ar_pci->verified_awake)

		return;

		return 0;



	for (;;) {

		if (ath10k_pci_target_is_awake(ar)) {

			ar_pci->verified_awake = true;

			break;

			return 0;

		}



		if (tot_delay > PCIE_WAKE_TIMEOUT) {

			ath10k_warn("target takes too long to wake up (awake count %d)\n",

			ath10k_warn("target took longer %d us to wake up (awake count %d)\n",

				    PCIE_WAKE_TIMEOUT,

				    atomic_read(&ar_pci->keep_awake_count));

			break;

			return -ETIMEDOUT;

		}



		udelay(curr_delay);

drivers/net/wireless/ath/ath10k/pci.h

+5 −3
Original line number Diff line number Diff line
@@ -321,15 +321,17 @@ static inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset) 
	return ioread32(ar_pci->mem + offset);

}



void ath10k_do_pci_wake(struct ath10k *ar);

int ath10k_do_pci_wake(struct ath10k *ar);

void ath10k_do_pci_sleep(struct ath10k *ar);



static inline void ath10k_pci_wake(struct ath10k *ar)

static inline int ath10k_pci_wake(struct ath10k *ar)

{

	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);



	if (test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features))

		ath10k_do_pci_wake(ar);

		return ath10k_do_pci_wake(ar);



	return 0;

}



static inline void ath10k_pci_sleep(struct ath10k *ar)

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