diff options
| author | Felipe Balbi <balbi@ti.com> | 2014-09-15 09:03:24 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-15 08:36:43 +0200 |
| commit | 914435e6a2648d4f78aba661f9a5d178a011e35a (patch) | |
| tree | 9a427b4d50ea94e2f61b767284c86636ebbb3582 | |
| parent | ca1791238a2982127b87d33035c53a9e786808ed (diff) | |
usb: musb: dsps: kill OTG timer on suspend
commit 468bcc2a2ca071f652009d2d20d97f2437630cae upstream.
if we don't make sure to kill the timer, it could
expire after we have already gated our clocks.
That will trigger a Data Abort exception because
we would try to access register while clock is gated.
Fix that bug.
Fixes 869c597 (usb: musb: dsps: add support for suspend and resume)
Tested-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 7a109eae9b9a..85f5215871de 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -707,6 +707,7 @@ static int dsps_suspend(struct device *dev) struct musb *musb = platform_get_drvdata(glue->musb); void __iomem *mbase = musb->ctrl_base; + del_timer_sync(&glue->timer); glue->context.control = dsps_readl(mbase, wrp->control); glue->context.epintr = dsps_readl(mbase, wrp->epintr_set); glue->context.coreintr = dsps_readl(mbase, wrp->coreintr_set); @@ -732,6 +733,7 @@ static int dsps_resume(struct device *dev) dsps_writel(mbase, wrp->mode, glue->context.mode); dsps_writel(mbase, wrp->tx_mode, glue->context.tx_mode); dsps_writel(mbase, wrp->rx_mode, glue->context.rx_mode); + setup_timer(&glue->timer, otg_timer, (unsigned long) musb); return 0; } |