From: Bjorn Helgaas <bjorn.helgaas@hp.com>
Date: Thu, 28 Jul 2005 08:07:39 +0000 (-0700)
Subject: [PATCH] PCDP: if PCDP contains parity information, use it
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=11be00cba6be114f861123cfc6779f195a615d22;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] PCDP: if PCDP contains parity information, use it

If the PCDP supplies parity, use it (only none/even/odd supported), and
don't append parity/stop bit arguments unless baud is present.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 53c95c0bbf46..ae1fb45dbb40 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -25,14 +25,22 @@ setup_serial_console(struct pcdp_uart *uart)
 #ifdef CONFIG_SERIAL_8250_CONSOLE
 	int mmio;
 	static char options[64], *p = options;
+	char parity;
 
 	mmio = (uart->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY);
 	p += sprintf(p, "console=uart,%s,0x%lx",
 		mmio ? "mmio" : "io", uart->addr.address);
-	if (uart->baud)
+	if (uart->baud) {
 		p += sprintf(p, ",%lu", uart->baud);
-	if (uart->bits)
-		p += sprintf(p, "n%d", uart->bits);
+		if (uart->bits) {
+			switch (uart->parity) {
+			    case 0x2: parity = 'e'; break;
+			    case 0x3: parity = 'o'; break;
+			    default:  parity = 'n';
+			}
+			p += sprintf(p, "%c%d", parity, uart->bits);
+		}
+	}
 
 	return early_serial_console_init(options);
 #else