From: Mike Christie <[EMAIL PROTECTED]>

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 less people asking about this now.
Signed-off-by: Mike Christie <[EMAIL PROTECTED]>
---
 drivers/scsi/iscsi_tcp.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 861cb9b..c9a3abf 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -1777,14 +1777,24 @@ iscsi_tcp_conn_create(struct iscsi_cls_s
        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;
 
-- 
1.4.1.1

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