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brcmfmac: Fix 'did not remove int handler' warning 

brcmf_sdiod_intr_unregister call that removes both func1 and
func2 interrupt handlers only called when brcmf_ops_sdio_remove
is called for func 1 (which is the 2nd call) but sdio is expecting
it to be removed at the end of each sdio_remove call.
This is causing 'rmmod bcmrfmac' on a 4356-sdio chip to complain
with:
WARNING: driver brcmfmac did not remove its interrupt handler!

The modification makes calling brcmf_sdiod_intr_unregister multiple
times harmless by clearing the variables that track if interrupt
handlers have been installed, and then calls it on every
brcmf_ops_sdio_remove call instead of just remove for func 1.

Signed-off-by: Christian Daudt <csd@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Christian Daudt 2016-05-11 15:06:49 -07:00 committed by Kalle Valo
parent b88a2e8039
commit b746740147
2 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
View File

@ -172,7 +172,7 @@ int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
return 0;
}
int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
{
brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n",
@ -195,6 +195,7 @@ int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
}
free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev);
sdiodev->irq_en = false;
sdiodev->oob_irq_requested = false;
}
if (sdiodev->sd_irq_requested) {
@ -202,9 +203,8 @@ int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
sdio_release_irq(sdiodev->func[2]);
sdio_release_irq(sdiodev->func[1]);
sdio_release_host(sdiodev->func[1]);
sdiodev->sd_irq_requested = false;
}
return 0;
}
void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
@ -1201,12 +1201,17 @@ static void brcmf_ops_sdio_remove(struct sdio_func *func)
brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
brcmf_dbg(SDIO, "Function: %d\n", func->num);
if (func->num != 1)
return;
bus_if = dev_get_drvdata(&func->dev);
if (bus_if) {
sdiodev = bus_if->bus_priv.sdio;
/* start by unregistering irqs */
brcmf_sdiod_intr_unregister(sdiodev);
if (func->num != 1)
return;
/* only proceed with rest of cleanup if func 1 */
brcmf_sdiod_remove(sdiodev);
dev_set_drvdata(&sdiodev->func[1]->dev, NULL);

2
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
View File

@ -294,7 +294,7 @@ struct sdpcmd_regs {
/* Register/deregister interrupt handler. */
int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev);
int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev);
void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev);
/* sdio device register access interface */
u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);