This is a note to let you know that I've just added the patch titled
usb: xhci: dbc: Don't free all memory with spinlock held
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 8867ea262196a6945c24a0fb739575af646ec0e9 Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Date: Fri, 22 Mar 2019 17:50:16 +0200
Subject: usb: xhci: dbc: Don't free all memory with spinlock held
The xhci debug capability (DbC) feature did its memory cleanup with
spinlock held. dma_free_coherent() warns if called with interrupts
disabled
move the memory cleanup outside the spinlock
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-dbgcap.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c
index c78be578abb0..d932cc31711e 100644
--- a/drivers/usb/host/xhci-dbgcap.c
+++ b/drivers/usb/host/xhci-dbgcap.c
@@ -516,7 +516,6 @@ static int xhci_do_dbc_stop(struct xhci_hcd *xhci)
return -1;
writel(0, &dbc->regs->control);
- xhci_dbc_mem_cleanup(xhci);
dbc->state = DS_DISABLED;
return 0;
@@ -562,8 +561,10 @@ static void xhci_dbc_stop(struct xhci_hcd *xhci)
ret = xhci_do_dbc_stop(xhci);
spin_unlock_irqrestore(&dbc->lock, flags);
- if (!ret)
+ if (!ret) {
+ xhci_dbc_mem_cleanup(xhci);
pm_runtime_put_sync(xhci_to_hcd(xhci)->self.controller);
+ }
}
static void
--
2.21.0
