linux-kernel - [PATCH 2/3] usb: early: xhci-dbc: Remove duplicate keep parsing

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Date:   Fri, 04 Mar 2022 16:19:55 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     x86@...nel.org, mathias.nyman@...ux.intel.com,
        gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        rdunlap@...radead.org, linux-usb@...r.kernel.org
Subject: [PATCH 2/3] usb: early: xhci-dbc: Remove duplicate keep parsing

The generic earlyprintk= parsing already parses the optional ",keep",
no need to duplicate that in the xdbc driver.

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 arch/x86/kernel/early_printk.c |    2 +-
 drivers/usb/early/xhci-dbc.c   |    5 ++---
 include/linux/usb/xhci-dbgp.h  |    2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -387,7 +387,7 @@ static int __init setup_early_printk(cha
 #endif
 #ifdef CONFIG_EARLY_PRINTK_USB_XDBC
 		if (!strncmp(buf, "xdbc", 4))
-			early_xdbc_parse_parameter(buf + 4);
+			early_xdbc_parse_parameter(buf + 4, keep);
 #endif
 
 		buf++;
--- a/drivers/usb/early/xhci-dbc.c
+++ b/drivers/usb/early/xhci-dbc.c
@@ -599,7 +599,7 @@ static int __init xdbc_early_setup(void)
 	return 0;
 }
 
-int __init early_xdbc_parse_parameter(char *s)
+int __init early_xdbc_parse_parameter(char *s, int keep_early)
 {
 	unsigned long dbgp_num = 0;
 	u32 bus, dev, func, offset;
@@ -608,8 +608,7 @@ int __init early_xdbc_parse_parameter(ch
 	if (!early_pci_allowed())
 		return -EPERM;
 
-	if (strstr(s, "keep"))
-		early_console_keep = true;
+	early_console_keep = keep_early;
 
 	if (xdbc.xdbc_reg)
 		return 0;
--- a/include/linux/usb/xhci-dbgp.h
+++ b/include/linux/usb/xhci-dbgp.h
@@ -15,7 +15,7 @@
 #define __LINUX_XHCI_DBGP_H
 
 #ifdef CONFIG_EARLY_PRINTK_USB_XDBC
-int __init early_xdbc_parse_parameter(char *s);
+int __init early_xdbc_parse_parameter(char *s, int keep_early);
 int __init early_xdbc_setup_hardware(void);
 void __init early_xdbc_register_console(void);
 #else