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authorClemens Ladisch <clemens@ladisch.de>2010-03-01 17:18:56 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-19 07:24:06 -0700
commit1082f57abfa26590b60c43f503afb24102a37016 (patch)
tree05f1d88c99c0e9a2cd65c830f16ac92a3bc18ecb /drivers/usb/host/ehci.h
parent92bc3648e6027384479852b770a542722fadee7c (diff)
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USB: EHCI: adjust ehci_iso_stream for changes in ehci_qh
The EHCI driver stores in usb_host_endpoint.hcpriv a pointer to either an ehci_qh or an ehci_iso_stream structure, and uses the contents of the hw_info1 field to distinguish the two cases. After ehci_qh was split into hw and sw parts, ehci_iso_stream must also be adjusted so that it again looks like an ehci_qh structure. This fixes a NULL pointer access in ehci_endpoint_disable() when it tries to access qh->hw->hw_info1. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Reported-by: Colin Fletcher <colin.m.fletcher@googlemail.com> Cc: stable <stable@kernel.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci.h')
-rw-r--r--drivers/usb/host/ehci.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 2d85e21ff28..b1dce96dd62 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -394,9 +394,8 @@ struct ehci_iso_sched {
* acts like a qh would, if EHCI had them for ISO.
*/
struct ehci_iso_stream {
- /* first two fields match QH, but info1 == 0 */
- __hc32 hw_next;
- __hc32 hw_info1;
+ /* first field matches ehci_hq, but is NULL */
+ struct ehci_qh_hw *hw;
u32 refcount;
u8 bEndpointAddress;