3.2.64-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Felipe Balbi <ba...@ti.com>
commit fed33afce0eda44a46ae24d93aec1b5198c0bac4 upstream.
Currently, we disable pm_runtime before all register
accesses are done, this is dangerous and might lead
to abort exceptions due to the driver trying to access
a register which is clocked by a clock which was long
gated.
Fix that by moving pm_runtime_put_sync() and pm_runtime_disable()
as the last thing we do before returning from our ->remove()
method.
Fixes: 72246da (usb: Introduce DesignWare USB3 DRD Driver)
Signed-off-by: Felipe Balbi <ba...@ti.com>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/usb/dwc3/core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -427,9 +427,6 @@ static int __devexit dwc3_remove(struct
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
-
dwc3_debugfs_exit(dwc);
if (features & DWC3_HAS_PERIPHERAL)
@@ -440,6 +437,9 @@ static int __devexit dwc3_remove(struct
iounmap(dwc->regs);
kfree(dwc->mem);
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
return 0;
}
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