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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2022 Google, Inc.
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* Written by Andrew Scull <ascull@google.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <virtio_types.h>
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#include <virtio.h>
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#include <virtio_ring.h>
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#include <dm/device-internal.h>
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#include <dm/test.h>
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#include <rng.h>
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#include <test/test.h>
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#include <test/ut.h>
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/* This is a brittle means of getting access to the virtqueue */
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struct virtio_rng_priv {
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struct virtqueue *rng_vq;
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};
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/* Test the virtio-rng driver validates the used size */
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static int dm_test_virtio_rng_check_len(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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struct virtio_rng_priv *priv;
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u8 buffer[16];
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/* check probe success */
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ut_assertok(uclass_first_device_err(UCLASS_VIRTIO, &bus));
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ut_assertnonnull(bus);
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/* check the child virtio-rng device is bound */
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ut_assertok(device_find_first_child(bus, &dev));
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ut_assertnonnull(dev);
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/* probe the virtio-rng driver */
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ut_assertok(device_probe(dev));
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/* simulate the device returning the buffer with too much data */
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priv = dev_get_priv(dev);
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priv->rng_vq->vring.used->idx = 1;
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priv->rng_vq->vring.used->ring[0].id = 0;
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priv->rng_vq->vring.used->ring[0].len = U32_MAX;
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/* check the driver gracefully handles the error */
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ut_asserteq(-EIO, dm_rng_read(dev, buffer, sizeof(buffer)));
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return 0;
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}
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DM_TEST(dm_test_virtio_rng_check_len, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
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