| commit | e1393667be574807a13bfaf1bb471f5fd1a5287b | |
| author | Clemens Ladisch <clemens@ladisch.de> | |
| Mon, 12 Apr 2010 08:35:44 +0000 (12 10:35 +0200) | ||
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | |
| Mon, 19 Apr 2010 17:58:32 +0000 (19 19:58 +0200) | ||
| tree | 5f2084f1a5099062cb27e74765ec3cd8a69c3489 | treesnapshot (tar.gz zip) |
| parent | 2608203daf5f87311c6e5d36e5de5efcb14aab24 | commitdiff |
firewire: ohci: wait for local CSR lock access to finish
Add a loop to wait for the controller to finish a locally-initiated CSR
lock operation. Google shows some occurrences of the "swap not done
yet" message which might indicate that some OHCI controllers are not
fast enough to do the lock/swap in the time needed for one PCI access.
This also correctly handles the case where the lock operation did not
finish, instead of silently returning an uninitialized value.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Add a loop to wait for the controller to finish a locally-initiated CSR
lock operation. Google shows some occurrences of the "swap not done
yet" message which might indicate that some OHCI controllers are not
fast enough to do the lock/swap in the time needed for one PCI access.
This also correctly handles the case where the lock operation did not
finish, instead of silently returning an uninitialized value.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| drivers/firewire/ohci.c | diffblobblamehistory |