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x86: acpi: Not every platform has serial console a first device

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We may not do an assumption that current console device is always a first
of UCLASS_SERIAL one.

For example, on properly described Intel Edison board the console UART
is a third one.

Use current serial device as described in global data.

Fixes: a61cbad78e ("dm: serial: Adjust serial_getinfo() to use proper API")
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Andy Shevchenko 2019-02-28 17:19:54 +02:00 committed by Bin Meng
parent c652dd1557
commit edf18a83f8
1 changed files with 3 additions and 3 deletions
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6
arch/x86/lib/acpi_table.c
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@ -347,7 +347,7 @@ static void acpi_create_spcr(struct acpi_spcr *spcr)
uint serial_width;
int access_size;
int space_id;
int ret;
int ret = -ENODEV;
/* Fill out header fields */
acpi_fill_header(header, "SPCR");
@ -355,8 +355,8 @@ static void acpi_create_spcr(struct acpi_spcr *spcr)
header->revision = 2;
/* Read the device once, here. It is reused below */
ret = uclass_first_device_err(UCLASS_SERIAL, &dev);
if (!ret)
dev = gd->cur_serial_dev;
if (dev)
ret = serial_getinfo(dev, &serial_info);
if (ret)
serial_info.type = SERIAL_CHIP_UNKNOWN;