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wil6210: fix for HW bug in interrupt setup logic

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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>
This commit is contained in:
Vladimir Kondratiev 2014-03-17 15:34:13 +02:00 committed by John W. Linville
parent 98a65b59f8
commit f4b5a8032d
3 changed files with 19 additions and 0 deletions
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17
drivers/net/wireless/ath/wil6210/interrupt.c
View file

@ -493,6 +493,23 @@ static int wil6210_request_3msi(struct wil6210_priv *wil, int irq)
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)
{

1
drivers/net/wireless/ath/wil6210/pcie_bus.c
View file

@ -153,6 +153,7 @@ static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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) {

1
drivers/net/wireless/ath/wil6210/wil6210.h
View file

@ -476,6 +476,7 @@ int wmi_rxon(struct wil6210_priv *wil, bool on);
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);