diff options
| author | Johan Hovold <johan+linaro@kernel.org> | 2023-04-05 11:03:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-17 11:35:32 +0200 |
| commit | 3092933b2637f9877a965312969f8ac3a8fe227b (patch) | |
| tree | 7fcf036079af882b232a84fbecf4348db3cccf73 | |
| parent | 3c5a28658d129e930fa7778cc27498a70726cf96 (diff) | |
xhci: fix debugfs register accesses while suspended
commit 735baf1b23458f71a8b15cb924af22c9ff9cd125 upstream.
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>
| -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 f5c8e4eb62ae..dc332f5800ad 100644 --- a/drivers/usb/host/xhci-debugfs.c +++ b/drivers/usb/host/xhci-debugfs.c @@ -132,6 +132,7 @@ 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); } |