[PATCH 2/2] acpi, x86: Use SPCR table for earlycon on x86
From: Timur Tabi <hidden>
Date: 2017-12-07 18:46:48
Also in:
linux-acpi, linux-pm, linux-serial, lkml
On Thu, Dec 7, 2017 at 11:29 AM, Prarit Bhargava [off-list ref] wrote:
quoted hunk ↗ jump to hunk
-int __init acpi_parse_spcr(bool earlycon) +int __init acpi_parse_spcr(bool earlycon, bool enable_console) { static char opts[ACPI_SPCR_OPTS_SIZE]; static char uart[ACPI_SPCR_BUF_SIZE];@@ -113,7 +113,8 @@ int __init acpi_parse_spcr(bool earlycon) if (earlycon) setup_earlycon(opts); - err = add_preferred_console(uart, 0, opts + strlen(uart) + 1); + if (enable_console) + err = add_preferred_console(uart, 0, opts + strlen(uart) + 1);
So if earlycon==true but enable_console==false, then you parse SPCR and use it for the early console, but not the primary console? I'm not sure what that gives you.