[PATCH 4/6] [v3] wifi: ath10k: do not ignore possible dma_alloc_coherent() error

[Dmitry Antipov]

Change 'ath10k_ce_alloc_rri()' to return -ENOMEM in case
of 'dma_alloc_coherent()' failure and fix error handling in
'ath10k_snoc_hif_power_up()'.

Signed-off-by: Dmitry Antipov <dmantipov at yandex.ru>
---
v3: split from the larger v2 patch
---
 drivers/net/wireless/ath/ath10k/ce.c   | 6 ++++--
 drivers/net/wireless/ath/ath10k/ce.h   | 2 +-
 drivers/net/wireless/ath/ath10k/snoc.c | 9 ++++++++-
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
index 73aa3632b23c..d7275dcc1f99 100644
--- a/drivers/net/wireless/ath/ath10k/ce.c
+++ b/drivers/net/wireless/ath/ath10k/ce.c
@@ -1906,7 +1906,7 @@ int ath10k_ce_alloc_pipe(struct ath10k *ar, int ce_id,
 }
 EXPORT_SYMBOL(ath10k_ce_alloc_pipe);
 
-void ath10k_ce_alloc_rri(struct ath10k *ar)
+int ath10k_ce_alloc_rri(struct ath10k *ar)
 {
 	int i;
 	u32 value;
@@ -1919,7 +1919,7 @@ void ath10k_ce_alloc_rri(struct ath10k *ar)
 					   &ce->paddr_rri, GFP_KERNEL);
 
 	if (!ce->vaddr_rri)
-		return;
+		return -ENOMEM;
 
 	ath10k_ce_write32(ar, ar->hw_ce_regs->ce_rri_low,
 			  lower_32_bits(ce->paddr_rri));
@@ -1934,6 +1934,8 @@ void ath10k_ce_alloc_rri(struct ath10k *ar)
 		value |= ar->hw_ce_regs->upd->mask;
 		ath10k_ce_write32(ar, ce_base_addr + ctrl1_regs, value);
 	}
+
+	return 0;
 }
 EXPORT_SYMBOL(ath10k_ce_alloc_rri);
 
diff --git a/drivers/net/wireless/ath/ath10k/ce.h b/drivers/net/wireless/ath/ath10k/ce.h
index a0b408176f7f..c90c00316356 100644
--- a/drivers/net/wireless/ath/ath10k/ce.h
+++ b/drivers/net/wireless/ath/ath10k/ce.h
@@ -262,7 +262,7 @@ void ath10k_ce_enable_interrupts(struct ath10k *ar);
 void ath10k_ce_dump_registers(struct ath10k *ar,
 			      struct ath10k_fw_crash_data *crash_data);
 
-void ath10k_ce_alloc_rri(struct ath10k *ar);
+int ath10k_ce_alloc_rri(struct ath10k *ar);
 void ath10k_ce_free_rri(struct ath10k *ar);
 
 /* ce_attr.flags values */
diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index 815df15f58fb..b3acb6ad6f45 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -1074,10 +1074,17 @@ static int ath10k_snoc_hif_power_up(struct ath10k *ar,
 		goto err_hw_power_off;
 	}
 
-	ath10k_ce_alloc_rri(ar);
+	ret = ath10k_ce_alloc_rri(ar);
+	if (ret)
+		goto err_snoc_wlan_disable;
 
 	ath10k_snoc_init_pipes(ar);
 
+	return 0;
+
+err_snoc_wlan_disable:
+	ath10k_snoc_wlan_disable(ar);
+
 err_hw_power_off:
 	ath10k_hw_power_off(ar);
 
-- 
2.41.0