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| author | J. Bruce Fields <bfields@redhat.com> | 2010-12-17 13:29:07 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2010-12-17 13:29:07 -0500 |
| commit | ec66ee3797e5848356cf593c6ec7aabf30a00cf1 (patch) | |
| tree | 7ed5c84cc914644ffa1cd1b6a2b45db53fc224e8 /block/bsg.c | |
| parent | 1205065764f2eda3216ebe213143f69891ee3460 (diff) | |
| parent | b0c3844d8af6b9f3f18f31e1b0502fbefa2166be (diff) | |
| download | op-kernel-dev-ec66ee3797e5848356cf593c6ec7aabf30a00cf1.zip op-kernel-dev-ec66ee3797e5848356cf593c6ec7aabf30a00cf1.tar.gz | |
Merge commit 'v2.6.37-rc6' into for-2.6.38
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 f20d6a7..0c8b64a 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, |
