diff options
Diffstat (limited to 'drivers/net/ipa/ipa_endpoint.c')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index ce7f2d6e447e..8909ba8bfd0e 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. - * Copyright (C) 2019-2022 Linaro Ltd. + * Copyright (C) 2019-2023 Linaro Ltd. */ #include <linux/types.h> @@ -1986,6 +1986,7 @@ int ipa_endpoint_config(struct ipa *ipa) struct device *dev = &ipa->pdev->dev; const struct ipa_reg *reg; u32 endpoint_id; + u32 hw_limit; u32 tx_count; u32 rx_count; u32 rx_base; @@ -2031,6 +2032,14 @@ int ipa_endpoint_config(struct ipa *ipa) return -EINVAL; } + /* Until IPA v5.0, the max endpoint ID was 32 */ + hw_limit = ipa->version < IPA_VERSION_5_0 ? 32 : U8_MAX + 1; + if (limit > hw_limit) { + dev_err(dev, "unexpected endpoint count, %u > %u\n", + limit, hw_limit); + return -EINVAL; + } + /* Allocate and initialize the available endpoint bitmap */ ipa->available = bitmap_zalloc(limit, GFP_KERNEL); if (!ipa->available) |