diff options
| author | Ingo Molnar <mingo@elte.hu> | 2010-12-23 09:48:41 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-12-23 09:48:41 +0100 |
| commit | 26e20a108caca6231c6a5ec659f815a866904751 (patch) | |
| tree | 36932c208a9e8994bfd7ed4eaf48b9c33f71fbe3 /block/bsg.c | |
| parent | 691513f70d3957939a318da970987b876c720861 (diff) | |
| parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
| download | linux-26e20a108caca6231c6a5ec659f815a866904751.tar.bz2 | |
Merge commit 'v2.6.37-rc7' into x86/security
Diffstat (limited to 'block/bsg.c')
| -rw-r--r-- | block/bsg.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/bsg.c b/block/bsg.c index f20d6a789d48..0c8b64a16484 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -250,6 +250,14 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm, int ret, rw; unsigned int dxfer_len; void *dxferp = NULL; + struct bsg_class_device *bcd = &q->bsg_dev; + + /* if the LLD has been removed then the bsg_unregister_queue will + * eventually be called and the class_dev was freed, so we can no + * longer use this request_queue. Return no such address. + */ + if (!bcd->class_dev) + return ERR_PTR(-ENXIO); dprintk("map hdr %llx/%u %llx/%u\n", (unsigned long long) hdr->dout_xferp, hdr->dout_xfer_len, (unsigned long long) hdr->din_xferp, |