From: Bjorn Helgaas Date: Tue, 3 Oct 2006 08:14:00 +0000 (-0700) Subject: [PATCH] ia64: note requirement for 8250_pnp, now that 8250_acpi is gone X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1ab54a936d75b1b100c998c8e2717fafd0b4c3b6;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [PATCH] ia64: note requirement for 8250_pnp, now that 8250_acpi is gone We removed 8250_acpi in 2.6.17. If we don't have PNPACPI turned on, we won't find any ACPI serial devices, so mention this requirement in the troubleshooting part of the documentation. CONFIG_PNPACPI is already turned on in all the relevant defconfigs. Signed-off-by: Bjorn Helgaas Acked-by: "Luck, Tony" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/Documentation/ia64/serial.txt b/Documentation/ia64/serial.txt index f51eb4bc2ff1..040b9773209f 100644 --- a/Documentation/ia64/serial.txt +++ b/Documentation/ia64/serial.txt @@ -124,6 +124,13 @@ TROUBLESHOOTING SERIAL CONSOLE PROBLEMS - Add entry to /etc/securetty for console tty. + No ACPI serial devices found in 2.6.17 or later: + + - Turn on CONFIG_PNP and CONFIG_PNPACPI. Prior to 2.6.17, ACPI + serial devices were discovered by 8250_acpi. In 2.6.17, + 8250_acpi was replaced by the combination of 8250_pnp and + CONFIG_PNPACPI. + [1] http://www.dig64.org/specifications/DIG64_PCDPv20.pdf