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author | Daniel Verkamp <dverkamp@chromium.org> | 2019-06-14 13:31:04 -0700 |
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committer | Commit Bot <commit-bot@chromium.org> | 2019-06-25 04:36:47 +0000 |
commit | dade4c7425d44033f6a312209cf0a5d6a69a31ca (patch) | |
tree | a1a0efef605dc3f903b3899d041a3d9a3638b9b8 /qcow_utils | |
parent | 5e3442e67519caa018c3ec51d7105b03ea648e4d (diff) | |
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devices: pci: preserve read-only bits in write_reg
The 32-bit write_reg() function for PCI configuration space masked off non-writable (read-only) bits from the incoming value, but it did not preserve the original bits from the register; this results in writes to read-only registers to clear all read-only bits to 0 instead. Preserve the original value of the read-only bits and add a test to verify that this works. BUG=None TEST=./build_test Change-Id: Icc67b429f17d519ec4e9090f8e0ce48aaff76491 Signed-off-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1660204 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Dylan Reid <dgreid@chromium.org>
Diffstat (limited to 'qcow_utils')
0 files changed, 0 insertions, 0 deletions