From: Mike Christie Date: Thu, 13 Dec 2007 18:43:42 +0000 (-0600) Subject: [SCSI] iscsi_tcp: fix setting of r2t X-Git-Tag: v2.6.25-rc1~1230^2~92 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=df93ffcd748ce41e7b716c3056ae511939bb745e;p=linux-2.6-omap-h63xx.git [SCSI] iscsi_tcp: fix setting of r2t If we negotiate for X r2ts we have to use only X r2ts. We cannot round up (we could send less though). It is ok to fail if it is not something the driver can handle, so this patch just does that. Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index edebdf27af9..e5be5fd4ef5 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -1774,12 +1774,12 @@ iscsi_conn_set_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param, break; case ISCSI_PARAM_MAX_R2T: sscanf(buf, "%d", &value); - if (session->max_r2t == roundup_pow_of_two(value)) + if (value <= 0 || !is_power_of_2(value)) + return -EINVAL; + if (session->max_r2t == value) break; iscsi_r2tpool_free(session); iscsi_set_param(cls_conn, param, buf, buflen); - if (session->max_r2t & (session->max_r2t - 1)) - session->max_r2t = roundup_pow_of_two(session->max_r2t); if (iscsi_r2tpool_alloc(session)) return -ENOMEM; break;