mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
usb: xhci: Fix OOPS in xhci error handling code
The xhci driver will OOPS on resume from S2/S3 if dma_alloc_coherent() is out of memory. This is a result of two things: 1. xhci_mem_cleanup() in xhci-mem.c free's xhci->lpm_command if it's not NULL, but doesn't set it to NULL after the free. 2. xhci_mem_cleanup() is called twice on resume, once for normal restart and once from xhci_mem_init() if dma_alloc_coherent() fails, resulting in a free of xhci->lpm_command that has already been freed. The fix is to set xhci->lpm_command to NULL after freeing it. Signed-off-by: Al Cooper <alcooperx@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
c207e7c50f
commit
0eda06c7c1
1 changed files with 1 additions and 0 deletions
|
@ -1812,6 +1812,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
|
|||
|
||||
if (xhci->lpm_command)
|
||||
xhci_free_command(xhci, xhci->lpm_command);
|
||||
xhci->lpm_command = NULL;
|
||||
if (xhci->cmd_ring)
|
||||
xhci_ring_free(xhci, xhci->cmd_ring);
|
||||
xhci->cmd_ring = NULL;
|
||||
|
|
Loading…
Reference in a new issue