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| author | Alan Stern <stern@rowland.harvard.edu> | 2005-12-16 11:09:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-12-16 11:25:25 -0800 |
| commit | 42245e65f356ed54fdf7a1f9a0095e0bc40f73a3 (patch) | |
| tree | d094f197975af7ef7b80006dbea0f5d38915f88b /drivers/usb/host | |
| parent | 42f3ab42875a52af7e711803bfb8d8d7cca84c1c (diff) | |
| download | linux-42245e65f356ed54fdf7a1f9a0095e0bc40f73a3.tar.bz2 | |
[PATCH] UHCI: add missing memory barriers
This patch (as617) adds a couple of memory barriers that Ben H. forgot in
his recent suspend/resume fix.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/uhci-hcd.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index ed550132db0b..79efaf7d86a3 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -717,6 +717,7 @@ static int uhci_suspend(struct usb_hcd *hcd, pm_message_t message) * at the source, so we must turn off PIRQ. */ pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, 0); + mb(); clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); uhci->hc_inaccessible = 1; hcd->poll_rh = 0; @@ -738,6 +739,7 @@ static int uhci_resume(struct usb_hcd *hcd) * really don't want to keep a stale HCD_FLAG_HW_ACCESSIBLE=0 */ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + mb(); if (uhci->rh_state == UHCI_RH_RESET) /* Dead */ return 0; |