net/smc: fix suppressed return code

[ Upstream commit 96d6fded958d971a3695009e0ed43aca6c598283 ]

The patch that repaired the invalid return code in smcd_new_buf_create()
missed to take care of errno ENOSPC which has a special meaning that no
more DMBEs can be registered on the device. Fix that by keeping this
errno value during the translation of the return code.

Fixes: 6b1bbf94ab36 ("net/smc: fix invalid return code in smcd_new_buf_create()")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 59cc99fec2a257879093a22ab98496095bacfdc0..efa65ec5e686c55e8e9eb47dad5d4b07014da23b 100644 (file)
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1616,8 +1616,11 @@ static struct smc_buf_desc *smcd_new_buf_create(struct smc_link_group *lgr,
                rc = smc_ism_register_dmb(lgr, bufsize, buf_desc);
                if (rc) {
                        kfree(buf_desc);
-                       return (rc == -ENOMEM) ? ERR_PTR(-EAGAIN) :
-                                                ERR_PTR(-EIO);
+                       if (rc == -ENOMEM)
+                               return ERR_PTR(-EAGAIN);
+                       if (rc == -ENOSPC)
+                               return ERR_PTR(-ENOSPC);
+                       return ERR_PTR(-EIO);
                }
                buf_desc->pages = virt_to_page(buf_desc->cpu_addr);
                /* CDC header stored in buf. So, pretend it was smaller */