ath5k will try to request irq when resuming and fails if the device
(like a PCMCIA card) has been removed. The driver remove function will,
then, be called, trying to free the failed requested irq, resulting in
a warning.
This solves this issue defining a new flag for the status bitmap to
indicate when irq has been successfully requested and does not try to
release it if not.
Signed-off-by: Thadeu Lima de Souza Cascardo <casca...@holoscopio.com>
---
drivers/net/wireless/ath/ath5k/base.c | 13 +++++++++++--
drivers/net/wireless/ath/ath5k/base.h | 3 ++-
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/base.c
b/drivers/net/wireless/ath/ath5k/base.c
index 029c1bc..c5e2d5b 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -553,6 +553,7 @@ ath5k_pci_probe(struct pci_dev *pdev,
ATH5K_ERR(sc, "request_irq failed\n");
goto err_free;
}
+ __set_bit(ATH_STAT_IRQREQUESTED, sc->status);
/* Initialize device */
sc->ah = ath5k_hw_attach(sc, id->driver_data);
@@ -628,6 +629,7 @@ ath5k_pci_probe(struct pci_dev *pdev,
err_ah:
ath5k_hw_detach(sc->ah);
err_irq:
+ __clear_bit(ATH_STAT_IRQREQUESTED, sc->status);
free_irq(pdev->irq, sc);
err_free:
ieee80211_free_hw(hw);
@@ -650,7 +652,10 @@ ath5k_pci_remove(struct pci_dev *pdev)
ath5k_debug_finish_device(sc);
ath5k_detach(pdev, hw);
ath5k_hw_detach(sc->ah);
- free_irq(pdev->irq, sc);
+ if (test_bit(ATH_STAT_IRQREQUESTED, sc->status)) {
+ __clear_bit(ATH_STAT_IRQREQUESTED, sc->status);
+ free_irq(pdev->irq, sc);
+ }
pci_iounmap(pdev, sc->iobase);
pci_release_region(pdev, 0);
pci_disable_device(pdev);
@@ -666,7 +671,10 @@ ath5k_pci_suspend(struct pci_dev *pdev, pm_message_t state)
ath5k_led_off(sc);
- free_irq(pdev->irq, sc);
+ if (test_bit(ATH_STAT_IRQREQUESTED, sc->status)) {
+ __clear_bit(ATH_STAT_IRQREQUESTED, sc->status);
+ free_irq(pdev->irq, sc);
+ }
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
@@ -699,6 +707,7 @@ ath5k_pci_resume(struct pci_dev *pdev)
ATH5K_ERR(sc, "request_irq failed\n");
goto err_no_irq;
}
+ __set_bit(ATH_STAT_IRQREQUESTED, sc->status);
ath5k_led_enable(sc);
return 0;
diff --git a/drivers/net/wireless/ath/ath5k/base.h
b/drivers/net/wireless/ath/ath5k/base.h
index f9b7f2f..4a71437 100644
--- a/drivers/net/wireless/ath/ath5k/base.h
+++ b/drivers/net/wireless/ath/ath5k/base.h
@@ -137,12 +137,13 @@ struct ath5k_softc {
size_t desc_len; /* size of TX/RX descriptors */
u16 cachelsz; /* cache line size */
- DECLARE_BITMAP(status, 5);
+ DECLARE_BITMAP(status, 6);
#define ATH_STAT_INVALID 0 /* disable hardware accesses */
#define ATH_STAT_MRRETRY 1 /* multi-rate retry support */
#define ATH_STAT_PROMISC 2
#define ATH_STAT_LEDSOFT 3 /* enable LED gpio status */
#define ATH_STAT_STARTED 4 /* opened & irqs enabled */
+#define ATH_STAT_IRQREQUESTED 5 /* irq requested */
unsigned int filter_flags; /* HW flags, AR5K_RX_FILTER_* */
unsigned int curmode; /* current phy mode */
--
1.6.3.3
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