diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-01-19 11:22:54 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-01-19 11:22:54 +0000 |
| commit | a1926d1745114789687ac029ae8c58944b7d2256 (patch) | |
| tree | c303e75615e378451a80b97bfd2c1ba54029d9bb /block/bsg.c | |
| parent | 492e917635a0fa05439bb562fd51577efc9cef30 (diff) | |
| parent | 52fc43f7c1c416b114e88ff39635c36e67ef15b6 (diff) | |
Merge branch 'for-2.6.38' into for-2.6.39
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 f20d6a789d4..0c8b64a1648 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, |