diff options
Diffstat (limited to 'drivers/crypto/nx/nx-842-powernv.c')
-rw-r--r-- | drivers/crypto/nx/nx-842-powernv.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/drivers/crypto/nx/nx-842-powernv.c b/drivers/crypto/nx/nx-842-powernv.c index c68df7e8bee1..e78ff5c65ed6 100644 --- a/drivers/crypto/nx/nx-842-powernv.c +++ b/drivers/crypto/nx/nx-842-powernv.c @@ -1,17 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for IBM PowerNV 842 compression accelerator * * Copyright (C) 2015 Dan Streetman, IBM Corp - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -36,8 +27,6 @@ MODULE_ALIAS_CRYPTO("842-nx"); #define WORKMEM_ALIGN (CRB_ALIGN) #define CSB_WAIT_MAX (5000) /* ms */ #define VAS_RETRIES (10) -/* # of requests allowed per RxFIFO at a time. 0 for unlimited */ -#define MAX_CREDITS_PER_RXFIFO (1024) struct nx842_workmem { /* Below fields must be properly aligned */ @@ -821,7 +810,11 @@ static int __init vas_cfg_coproc_info(struct device_node *dn, int chip_id, rxattr.lnotify_lpid = lpid; rxattr.lnotify_pid = pid; rxattr.lnotify_tid = tid; - rxattr.wcreds_max = MAX_CREDITS_PER_RXFIFO; + /* + * Maximum RX window credits can not be more than #CRBs in + * RxFIFO. Otherwise, can get checkstop if RxFIFO overruns. + */ + rxattr.wcreds_max = fifo_size / CRB_SIZE; /* * Open a VAS receice window which is used to configure RxFIFO |