Guenter Roeck 4e450dfd0f tty: serial: Work around warning backtrace in serial8250_set_defaults ...

Commit 7c7e6c8924 ("tty: serial: handle HAS_IOPORT dependencies")
triggers warning backtraces on a number of platforms which don't support
IO ports.

WARNING: CPU: 0 PID: 0 at drivers/tty/serial/8250/8250_port.c:470 serial8250_set_defaults+0x148/0x1d8
Unsupported UART type 0

The problem is seen because serial8250_set_defaults() is called for
all members of the serial8250_ports[] array even if that array is
not initialized.

Work around the problem by only displaying the warning if the port
type is not 0 (UPIO_PORT) or if iobase is set for the port.

Fixes: 7c7e6c8924 ("tty: serial: handle HAS_IOPORT dependencies")
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Stafford Horne <shorne@gmail.com>
Link: https://lore.kernel.org/r/20241205143033.2695333-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-12-06 08:00:01 +01:00

..

8250_accent.c

tty: serial: Remove redundant license text

2017-11-08 13:08:12 +01:00

8250_acorn.c

tty: serial: Remove redundant license text

2017-11-08 13:08:12 +01:00

8250_aspeed_vuart.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_bcm2835aux.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_bcm7271.c

serial: 8250: Fix typos in comments across various files

2024-10-11 08:14:50 +02:00

8250_boca.c

tty: serial: Remove redundant license text

2017-11-08 13:08:12 +01:00

8250_core.c

serial: core: Introduce wrapper to set @uart_port->cons

2024-08-21 14:56:23 +02:00

8250_dfl.c

tty: serial: 8250: add DFL bus driver for Altera 16550.

2023-01-19 16:07:40 +01:00

8250_dma.c

tty: serial: 8250_dma: use sgl with 2 nents to take care of buffer wrap

2024-07-31 12:32:30 +02:00

8250_dw.c

serial: 8250_dw: Add Sophgo SG2044 quirk

2024-11-04 02:02:21 +01:00

8250_dwlib.c

serial: remove quot_frac from serial8250_do_set_divisor()

2024-08-07 13:13:35 +02:00

8250_dwlib.h

serial: 8250_dw: Revert "Move definitions to the shared header"

2024-06-04 14:07:58 +02:00

8250_early.c

tty: serial: handle HAS_IOPORT dependencies

2024-10-28 21:44:28 +00:00

8250_em.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_exar_st16c554.c

tty: serial: Remove redundant license text

2017-11-08 13:08:12 +01:00

8250_exar.c

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

8250_fintek.c

serial: 8250_fintek: Add support for F81216E

2024-11-12 13:05:38 +01:00

8250_fourport.c

tty: serial: Remove redundant license text

2017-11-08 13:08:12 +01:00

8250_fsl.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_hp300.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

8250_hub6.c

tty: serial: Remove redundant license text

2017-11-08 13:08:12 +01:00

8250_ingenic.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_ioc3.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_lpc18xx.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_lpss.c

serial: 8250_lpss: copy dma_param using devm_kmemdup()

2024-01-04 16:21:51 +01:00

8250_men_mcb.c

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

8250_mid.c

serial: 8250_mid: Remove 8250_pci usage

2023-09-18 11:14:43 +02:00

8250_mtk.c

serial: 8250: Fix typos in comments across various files

2024-10-11 08:14:50 +02:00

8250_of.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_omap.c

serial: 8250: omap: Move pm_runtime_get_sync

2024-11-05 14:03:53 +01:00

8250_parisc.c

tty: add missing MODULE_DESCRIPTION() macros

2024-06-24 16:10:11 +02:00

8250_pci1xxxx.c

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

8250_pci.c

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

8250_pcilib.c

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

8250_pcilib.h

tty: serial: handle HAS_IOPORT dependencies

2024-10-28 21:44:28 +00:00

8250_pericom.c

serial: 8250_pericom: Use UART_LCR_DLAB

2022-06-27 14:33:15 +02:00

8250_platform.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_pnp.c

serial: 8250_pnp: Simplify "line" related code

2024-05-10 11:49:12 +01:00

8250_port.c

tty: serial: Work around warning backtrace in serial8250_set_defaults

2024-12-06 08:00:01 +01:00

8250_pxa.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_rsa.c

serial: 8250: Extract RSA bits

2024-06-04 14:01:50 +02:00

8250_rt288x.c

serial: 8250_rt288x: Remove unnecessary UART_REG_UNMAPPED

2023-05-13 19:47:26 +09:00

8250_tegra.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250_uniphier.c

serial: Switch back to struct platform_driver::remove()

2024-10-11 08:13:28 +02:00

8250.h

serial: 8250: Extract platform driver

2024-06-04 14:01:50 +02:00

Kconfig

Merge tag 'tty-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2024-11-30 09:03:16 -08:00

Makefile

serial: 8250: Extract platform driver

2024-06-04 14:01:50 +02:00

serial_cs.c

tty: add missing MODULE_DESCRIPTION() macros

2024-06-24 16:10:11 +02:00