diff options
Diffstat (limited to 'mailbox/arm_mhu_v2.c')
| -rw-r--r-- | mailbox/arm_mhu_v2.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/mailbox/arm_mhu_v2.c b/mailbox/arm_mhu_v2.c index b65bd78..8c1a6e9 100644 --- a/mailbox/arm_mhu_v2.c +++ b/mailbox/arm_mhu_v2.c @@ -1,11 +1,23 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - /* - * Message Handling Unit version 2 controller driver - * Copyright (C) 2019-2020 ARM Ltd. + * SPDX-FileCopyrightText: Copyright 2019-2021, 2023 Arm Limited and/or its affiliates <open-source-office@arm.com> + * SPDX-License-Identifier: GPL-2.0 * - * Based on drivers/mailbox/arm_mhu.c + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, you can access it online at + * http://www.gnu.org/licenses/gpl-2.0.html. + * + * Message Handling Unit version 2 controller driver + * Based on drivers/mailbox/arm_mhu.c */ #include <linux/interrupt.h> @@ -162,7 +174,7 @@ static const struct mbox_chan_ops mhuv2_ops = { .last_tx_done = mhuv2_last_tx_done, }; -void mhuv2_check_enable_cmbint(struct mhuv2_link *link) +static void mhuv2_check_enable_cmbint(struct mhuv2_link *link) { const u32 aidr = readl_relaxed(link->rx_reg + MHU_V2_AIDR_OFS); @@ -191,6 +203,7 @@ static int mhuv2_probe(struct amba_device *adev, tx_base = of_iomap((struct device_node *)np, 0); if (!tx_base) { dev_err(dev, "failed to map tx registers\n"); + return -ENOMEM; } @@ -198,6 +211,7 @@ static int mhuv2_probe(struct amba_device *adev, if (!rx_base) { dev_err(dev, "failed to map rx registers\n"); iounmap(tx_base); + return -ENOMEM; } @@ -272,6 +286,7 @@ static void mhuv2_remove(struct amba_device *adev) mbox_controller_unregister(&mhuv2->mbox); } + #else static int mhuv2_remove(struct amba_device *adev) { @@ -281,8 +296,8 @@ static int mhuv2_remove(struct amba_device *adev) return 0; } -#endif +#endif static struct amba_id mhuv2_ids[] = { { |