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When the '8250_exar' module is loaded into the kernel, a kernel trace
with 'WARN_ON(legacy_iomap_table[bar])' is dumped to the console,
because the old pci table mapping is still used in '8250_pcilib'.
The old function have been deprecated in commit e354bb84a4 ("PCI:
Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()").
The remapping already takes or must take place in the driver that calls
the function 'serial8250_pci_setup_port()'. The remapping should only be
called once via 'pcim_iomap()'. Therefore the remapping moved to the
caller of 'serial8250_pci_setup_port()'.
To replace the outdated/legacy iomap_table processing in '8250_pcilib' the
function signature of 'serial8250_pci_setup_port()' has been extended with
an already iomapped address value. So this can be used directly without
io mapping again.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://patch.msgid.link/20250930072743.791580-1-fe@dev.tdt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
18 lines
413 B
C
18 lines
413 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* 8250 PCI library header file.
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*
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* Copyright (C) 2001 Russell King, All Rights Reserved.
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*/
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#include <linux/types.h>
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struct pci_dev;
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struct uart_8250_port;
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int serial8250_pci_setup_port(struct pci_dev *dev, struct uart_8250_port *port, u8 bar,
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unsigned int offset, int regshift, void __iomem *iomem);
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int serial_8250_warn_need_ioport(struct pci_dev *dev);
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