static void tg3_restore_pci_state(struct tg3 *tp)
{
	u32 val;

	/* Re-enable indirect register accesses. */
	pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
			       tp->misc_host_ctrl);

	/* Set MAX PCI retry to zero. */
	val = (PCISTATE_ROM_ENABLE | PCISTATE_ROM_RETRY_ENABLE);
	if (tg3_chip_rev_id(tp) == CHIPREV_ID_5704_A0 &&
	    tg3_flag(tp, PCIX_MODE))
		val |= PCISTATE_RETRY_SAME_DMA;
	/* Allow reads and writes to the APE register and memory space. */
	if (tg3_flag(tp, ENABLE_APE))
		val |= PCISTATE_ALLOW_APE_CTLSPC_WR |
		       PCISTATE_ALLOW_APE_SHMEM_WR |
		       PCISTATE_ALLOW_APE_PSPACE_WR;
	pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE, val);

	pci_write_config_word(tp->pdev, PCI_COMMAND, tp->pci_cmd);

	if (!tg3_flag(tp, PCI_EXPRESS)) {
		pci_write_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE,
				      tp->pci_cacheline_sz);
		pci_write_config_byte(tp->pdev, PCI_LATENCY_TIMER,
				      tp->pci_lat_timer);
	}

	/* Make sure PCI-X relaxed ordering bit is clear. */
	if (tg3_flag(tp, PCIX_MODE)) {
		u16 pcix_cmd;

		pci_read_config_word(tp->pdev, tp->pcix_cap + PCI_X_CMD,
				     &pcix_cmd);
		pcix_cmd &= ~PCI_X_CMD_ERO;
		pci_write_config_word(tp->pdev, tp->pcix_cap + PCI_X_CMD,
				      pcix_cmd);
	}

	if (tg3_flag(tp, 5780_CLASS)) {

		/* Chip reset on 5780 will reset MSI enable bit,
		 * so need to restore it.
		 */
		if (tg3_flag(tp, USING_MSI)) {
			u16 ctrl;

			pci_read_config_word(tp->pdev,
					     tp->msi_cap + PCI_MSI_FLAGS,
					     &ctrl);
			pci_write_config_word(tp->pdev,
					      tp->msi_cap + PCI_MSI_FLAGS,
					      ctrl | PCI_MSI_FLAGS_ENABLE);
			val = tr32(MSGINT_MODE);
			tw32(MSGINT_MODE, val | MSGINT_MODE_ENABLE);
		}
	}
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.