diff options
| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-03-25 21:24:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-06 03:43:13 -0700 |
| commit | 041172896309634d3a2065d69f3534de9d111ddd (patch) | |
| tree | aa9c1e8c6c0b2fb31d0ac2a5d9293553478b3099 | |
| parent | 16ad6a9070a33c1a624ace8880dd92803228a73d (diff) | |
ieee1394: dv1394: fix CardBus card ejection
Fix NULL pointer dereference on hot ejection of a FireWire card while
dv1394 was loaded. http://bugzilla.kernel.org/show_bug.cgi?id=7121
I did not test card ejection with open /dev/dv1394 files yet.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/ieee1394/dv1394.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c index 1084da4d88a..59e383c7d8f 100644 --- a/drivers/ieee1394/dv1394.c +++ b/drivers/ieee1394/dv1394.c @@ -2267,11 +2267,7 @@ static void dv1394_remove_host (struct hpsb_host *host) { struct video_card *video; unsigned long flags; - int id = host->id; - - /* We only work with the OHCI-1394 driver */ - if (strcmp(host->driver->name, OHCI1394_DRIVER_NAME)) - return; + int id = host->id, found_ohci_card = 0; /* find the corresponding video_cards */ do { @@ -2284,6 +2280,7 @@ static void dv1394_remove_host (struct hpsb_host *host) if ((tmp_vid->id >> 2) == id) { list_del(&tmp_vid->list); video = tmp_vid; + found_ohci_card = 1; break; } } @@ -2293,8 +2290,9 @@ static void dv1394_remove_host (struct hpsb_host *host) dv1394_un_init(video); } while (video != NULL); - class_device_destroy(hpsb_protocol_class, - MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id<<2))); + if (found_ohci_card) + class_device_destroy(hpsb_protocol_class, MKDEV(IEEE1394_MAJOR, + IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id << 2))); } static void dv1394_add_host (struct hpsb_host *host) |