diff options
| author | Dmitry Kalinkin <dmitry.kalinkin@gmail.com> | 2015-09-18 02:01:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-04 21:50:57 +0300 |
| commit | 0b0496625715374c7d0b747268c11528e8af32a3 (patch) | |
| tree | 6f129e982f9f3325162afe0271414833597471e9 /drivers/vme/bridges/vme_ca91cx42.c | |
| parent | 472f16f33c7d53515af83c805d4babd8a6c24a19 (diff) | |
| download | linux-0b0496625715374c7d0b747268c11528e8af32a3.tar.xz | |
vme: change bus error handling scheme
The current VME bus error handler adds errors to the bridge error list.
vme_master_{read,write} then traverses that list to look for relevant
errors.
Such scheme didn't work well for accesses going through vme_master_mmap
because they would also allocate a vme_bus_error, but have no way to do
vme_clear_errors call to free that memory.
This changes the error handling process to be other way around: now
vme_master_{read,write} defines a window in VME address space that will
catch possible errors. VME bus error interrupt only traverses these
windows and marks those that had errors in them.
Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Cc: Igor Alekseev <igor.alekseev@itep.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/vme/bridges/vme_ca91cx42.c')
| -rw-r--r-- | drivers/vme/bridges/vme_ca91cx42.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c index 1d41cf21319b..b79a74a98a23 100644 --- a/drivers/vme/bridges/vme_ca91cx42.c +++ b/drivers/vme/bridges/vme_ca91cx42.c @@ -204,8 +204,7 @@ static int ca91cx42_irq_init(struct vme_bridge *ca91cx42_bridge) /* Need pdev */ pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, dev); - /* Initialise list for VME bus errors */ - INIT_LIST_HEAD(&ca91cx42_bridge->vme_errors); + INIT_LIST_HEAD(&ca91cx42_bridge->vme_error_handlers); mutex_init(&ca91cx42_bridge->irq_mtx); |