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authorMike Christie <michaelc@cs.wisc.edu>2007-02-28 17:32:21 -0600
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-03-11 11:30:11 -0500
commit0f238418b6d41cdfc85f2f399848429ff6fbfbd0 (patch)
tree12a0b9cedc9aad715b1ade7955e365e173b37088 /drivers/scsi/iscsi_tcp.c
parent8231f0eddbe425cc3b54f2d723bb03531925272e (diff)
[SCSI] iscsi_tcp: print useful error message when iscsi crc23c allocation fails
People do not read the README and seem to like to unselect the crc32c module even though iscsi_tcp selects it for them. This patch spits a error that tells the user that they really do need the module. Hopefully, we will get fewer people asking about this now. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/iscsi_tcp.c')
-rw-r--r--drivers/scsi/iscsi_tcp.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 861cb9be40b0..c9a3abf9e7b6 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -1777,14 +1777,24 @@ iscsi_tcp_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
tcp_conn->tx_hash.tfm = crypto_alloc_hash("crc32c", 0,
CRYPTO_ALG_ASYNC);
tcp_conn->tx_hash.flags = 0;
- if (IS_ERR(tcp_conn->tx_hash.tfm))
+ if (IS_ERR(tcp_conn->tx_hash.tfm)) {
+ printk(KERN_ERR "Could not create connection due to crc32c "
+ "loading error %ld. Make sure the crc32c module is "
+ "built as a module or into the kernel\n",
+ PTR_ERR(tcp_conn->tx_hash.tfm));
goto free_tcp_conn;
+ }
tcp_conn->rx_hash.tfm = crypto_alloc_hash("crc32c", 0,
CRYPTO_ALG_ASYNC);
tcp_conn->rx_hash.flags = 0;
- if (IS_ERR(tcp_conn->rx_hash.tfm))
+ if (IS_ERR(tcp_conn->rx_hash.tfm)) {
+ printk(KERN_ERR "Could not create connection due to crc32c "
+ "loading error %ld. Make sure the crc32c module is "
+ "built as a module or into the kernel\n",
+ PTR_ERR(tcp_conn->rx_hash.tfm));
goto free_tx_tfm;
+ }
return cls_conn;