public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
* [4.3-rc1 regression] modular 8250 doesn't load
@ 2015-09-14 17:08 Mikael Pettersson
  2015-09-14 17:57 ` Greg Kroah-Hartman
  2015-09-14 18:00 ` [4.3-rc1 regression] modular 8250 doesn't load Albino B Neto
  0 siblings, 2 replies; 11+ messages in thread
From: Mikael Pettersson @ 2015-09-14 17:08 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman

I have CONFIG_SERIAL_8250=m.  With 4.2 '/sbin/modprobe 8250' worked
and resulted in:

[   41.354550] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[   41.375156] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A

With 4.3-rc1 however the command fails and logs the following:

[   34.140300] 8250_base: module license 'unspecified' taints kernel.
[   34.141846] Disabling lock debugging due to kernel taint
[   34.143388] 8250_base: Unknown symbol uart_insert_char (err 0)
[   34.144908] 8250_base: Unknown symbol uart_handle_dcd_change (err 0)
[   34.146439] 8250_base: Unknown symbol __pm_runtime_resume (err 0)
[   34.147901] 8250_base: Unknown symbol tty_termios_encode_baud_rate (err 0)
[   34.149354] 8250_base: Unknown symbol uart_handle_cts_change (err 0)
[   34.150798] 8250_base: Unknown symbol __pm_runtime_suspend (err 0)
[   34.152240] 8250_base: Unknown symbol nr_irqs (err 0)

Relevant .config fragments:

CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODVERSIONS=y

# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_SERIAL_8250=m
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
# CONFIG_SERIAL_8250_PNP is not set
# CONFIG_SERIAL_8250_PCI is not set
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_FINTEK is not set
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=m
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set

/Mikael

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2015-09-23 13:10 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-09-14 17:08 [4.3-rc1 regression] modular 8250 doesn't load Mikael Pettersson
2015-09-14 17:57 ` Greg Kroah-Hartman
2015-09-14 18:06   ` Mikael Pettersson
2015-09-14 18:50     ` Greg Kroah-Hartman
2015-09-14 20:42       ` Mikael Pettersson
2015-09-14 21:12         ` Greg Kroah-Hartman
2015-09-14 21:18           ` Greg Kroah-Hartman
2015-09-14 21:46             ` Mikael Pettersson
2015-09-21 20:23             ` [PATCH] " Jonathan McDowell
2015-09-23 13:09               ` [PATCH] serial: 8250: Add missing module license for 8250_base.ko Peter Hurley
2015-09-14 18:00 ` [4.3-rc1 regression] modular 8250 doesn't load Albino B Neto

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox