PCI: aardvark: Read all 16-bits from PCIE_MSI_PAYLOAD_REG
stable inclusion from stable-5.10.80 commit 4bb5399c1c73e36fbb186f3eda84e39e5422ed31 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4bb5399c1c73e36fbb186f3eda84e39e5422ed31 -------------------------------- commit 95997723 upstream. The PCIE_MSI_PAYLOAD_REG contains 16-bit MSI number, not only lower 8 bits. Fix reading content of this register and add a comment describing the access to this register. Link: https://lore.kernel.org/r/20211028185659.20329-4-kabel@kernel.org Fixes: 8c39d710 ("PCI: aardvark: Add Aardvark PCI host controller driver") Signed-off-by: NPali Rohár <pali@kernel.org> Signed-off-by: NMarek Behún <kabel@kernel.org> Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: stable@vger.kernel.org Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NChen Jun <chenjun102@huawei.com> Reviewed-by: NWeilong Chen <chenweilong@huawei.com> Acked-by: NWeilong Chen <chenweilong@huawei.com> Signed-off-by: NChen Jun <chenjun102@huawei.com> Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
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