serial: 8250_fintek: Add resource check for Fintek F81504/508/512
Add resource type check for Fintek F81504/508/512, BAR3/4/5 must be IORESOURCE_IO. Fintek is trying to make F81504/508/512 works on MMIO interface, but it's still in progress. We found some issue when the experiment IC when the BAR3/4/5 is IORESOURCE_MEM. It'll cause wrong operation with IO resource. So we'll add the resource check for this. Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1477,11 +1477,16 @@ static int pci_fintek_init(struct pci_dev *dev)
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{
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unsigned long iobase;
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u32 max_port, i;
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u32 bar_data[3];
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resource_size_t bar_data[3];
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u8 config_base;
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struct serial_private *priv = pci_get_drvdata(dev);
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struct uart_8250_port *port;
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if (!(pci_resource_flags(dev, 5) & IORESOURCE_IO) ||
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!(pci_resource_flags(dev, 4) & IORESOURCE_IO) ||
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!(pci_resource_flags(dev, 3) & IORESOURCE_IO))
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return -ENODEV;
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switch (dev->device) {
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case 0x1104: /* 4 ports */
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case 0x1108: /* 8 ports */
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@ -1495,9 +1500,9 @@ static int pci_fintek_init(struct pci_dev *dev)
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}
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/* Get the io address dispatch from the BIOS */
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pci_read_config_dword(dev, 0x24, &bar_data[0]);
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pci_read_config_dword(dev, 0x20, &bar_data[1]);
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pci_read_config_dword(dev, 0x1c, &bar_data[2]);
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bar_data[0] = pci_resource_start(dev, 5);
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bar_data[1] = pci_resource_start(dev, 4);
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bar_data[2] = pci_resource_start(dev, 3);
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for (i = 0; i < max_port; ++i) {
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/* UART0 configuration offset start from 0x40 */
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