wil6210: fix for HW bug in interrupt setup logic
Hardware bug triggered by the MSI init while INTx asserted for some reason.
De-assert INTx prior to MSI set-up
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/wil6210/interrupt.c b/drivers/net/wireless/ath/wil6210/interrupt.c
index 10919f9..52c40e1 100644
--- a/drivers/net/wireless/ath/wil6210/interrupt.c
+++ b/drivers/net/wireless/ath/wil6210/interrupt.c
@@ -493,6 +493,23 @@
return rc;
}
+/* can't use wil_ioread32_and_clear because ICC value is not ser yet */
+static inline void wil_clear32(void __iomem *addr)
+{
+ u32 x = ioread32(addr);
+
+ iowrite32(x, addr);
+}
+
+void wil6210_clear_irq(struct wil6210_priv *wil)
+{
+ wil_clear32(wil->csr + HOSTADDR(RGF_DMA_EP_RX_ICR) +
+ offsetof(struct RGF_ICR, ICR));
+ wil_clear32(wil->csr + HOSTADDR(RGF_DMA_EP_TX_ICR) +
+ offsetof(struct RGF_ICR, ICR));
+ wil_clear32(wil->csr + HOSTADDR(RGF_DMA_EP_MISC_ICR) +
+ offsetof(struct RGF_ICR, ICR));
+}
int wil6210_init_irq(struct wil6210_priv *wil, int irq)
{
diff --git a/drivers/net/wireless/ath/wil6210/pcie_bus.c b/drivers/net/wireless/ath/wil6210/pcie_bus.c
index d96e811..c609761 100644
--- a/drivers/net/wireless/ath/wil6210/pcie_bus.c
+++ b/drivers/net/wireless/ath/wil6210/pcie_bus.c
@@ -153,6 +153,7 @@
pci_set_drvdata(pdev, wil);
wil->pdev = pdev;
+ wil6210_clear_irq(wil);
/* FW should raise IRQ when ready */
rc = wil_if_pcie_enable(wil);
if (rc) {
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h
index 14f861c..317621c 100644
--- a/drivers/net/wireless/ath/wil6210/wil6210.h
+++ b/drivers/net/wireless/ath/wil6210/wil6210.h
@@ -476,6 +476,7 @@
int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r);
int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason);
+void wil6210_clear_irq(struct wil6210_priv *wil);
int wil6210_init_irq(struct wil6210_priv *wil, int irq);
void wil6210_fini_irq(struct wil6210_priv *wil, int irq);
void wil6210_disable_irq(struct wil6210_priv *wil);