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| author |  Johan Hovold <johan+linaro@kernel.org>
| 2023-04-05 11:03:42 +0200 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2023-04-20 10:13:06 +0200 |
| commit | 735baf1b23458f71a8b15cb924af22c9ff9cd125 (patch) | |
| tree | c68aaeaff6101e0d4ac994feadcfea285bcb2e5f /drivers/usb | |
| parent | usb: Add explicit of.h of_platform.h include (diff) | |
| download | linux-735baf1b23458f71a8b15cb924af22c9ff9cd125.tar.gz linux-735baf1b23458f71a8b15cb924af22c9ff9cd125.tar.bz2 linux-735baf1b23458f71a8b15cb924af22c9ff9cd125.zip | |
xhci: fix debugfs register accesses while suspended
Wire up the debugfs regset device pointer so that the controller is
resumed before accessing registers to avoid crashing or locking up if it
happens to be runtime suspended.
Fixes: 02b6fdc2a153 ("usb: xhci: Add debugfs interface for xHCI driver")
Cc: stable@vger.kernel.org # 4.15: 30332eeefec8: debugfs: regset32: Add Runtime PM support
Cc: stable@vger.kernel.org # 4.15
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230405090342.7363-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-debugfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-debugfs.c b/drivers/usb/host/xhci-debugfs.c index 0bc7fe11f749..99baa60ef50f 100644 --- a/drivers/usb/host/xhci-debugfs.c +++ b/drivers/usb/host/xhci-debugfs.c @@ -133,6 +133,7 @@ static void xhci_debugfs_regset(struct xhci_hcd *xhci, u32 base, regset->regs = regs; regset->nregs = nregs; regset->base = hcd->regs + base; + regset->dev = hcd->self.controller; debugfs_create_regset32((const char *)rgs->name, 0444, parent, regset); } |