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Date:   Wed, 2 Nov 2022 00:05:13 +0100
From:   Ahelenia Ziemiańska 
        <nabijaczleweli@...ijaczleweli.xyz>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Jonathan Corbet <corbet@....net>,
        Federico Vaga <federico.vaga@...a.pv.it>,
        Alex Shi <alexs@...nel.org>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Hu Haowen <src.res@...il.cn>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Haowen Bai <baihaowen@...zu.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc-tw-discuss@...ts.sourceforge.net
Subject: [PATCH v2 03/15] pcmcia: synclink_cs: remove MGSLPC_MAGIC

MGSLPC_PARANOIA_CHECK has never been defined automatically, and in the
context of magic numbers as defined in magic-number.rst, "the tty layer
should not need this".

This is 100% dead cruft, and we have better debugging tooling nowadays:
kill it.

Link: https://lore.kernel.org/linux-doc/YyMlovoskUcHLEb7@kroah.com/
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@...ijaczleweli.xyz>
---
 Documentation/process/magic-number.rst                 |  1 -
 .../translations/it_IT/process/magic-number.rst        |  1 -
 .../translations/zh_CN/process/magic-number.rst        |  1 -
 .../translations/zh_TW/process/magic-number.rst        |  1 -
 drivers/char/pcmcia/synclink_cs.c                      | 10 ----------
 5 files changed, 14 deletions(-)

diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst
index a4414b7e15aa..18f8b1e3a993 100644
--- a/Documentation/process/magic-number.rst
+++ b/Documentation/process/magic-number.rst
@@ -72,7 +72,6 @@ PG_MAGIC              'P'              pg_{read,write}_hdr      ``include/linux/
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
 SLIP_MAGIC            0x5302           slip                     ``drivers/net/slip.h``
-MGSLPC_MAGIC          0x5402           mgslpc_info              ``drivers/char/pcmcia/synclink_cs.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``
diff --git a/Documentation/translations/it_IT/process/magic-number.rst b/Documentation/translations/it_IT/process/magic-number.rst
index f51c5ef9d93f..827167b18f15 100644
--- a/Documentation/translations/it_IT/process/magic-number.rst
+++ b/Documentation/translations/it_IT/process/magic-number.rst
@@ -78,7 +78,6 @@ PG_MAGIC              'P'              pg_{read,write}_hdr      ``include/linux/
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
 SLIP_MAGIC            0x5302           slip                     ``drivers/net/slip.h``
-MGSLPC_MAGIC          0x5402           mgslpc_info              ``drivers/char/pcmcia/synclink_cs.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``
diff --git a/Documentation/translations/zh_CN/process/magic-number.rst b/Documentation/translations/zh_CN/process/magic-number.rst
index 3b53bd67e41b..9553475e9867 100644
--- a/Documentation/translations/zh_CN/process/magic-number.rst
+++ b/Documentation/translations/zh_CN/process/magic-number.rst
@@ -61,7 +61,6 @@ PG_MAGIC              'P'              pg_{read,write}_hdr      ``include/linux/
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
 SLIP_MAGIC            0x5302           slip                     ``drivers/net/slip.h``
-MGSLPC_MAGIC          0x5402           mgslpc_info              ``drivers/char/pcmcia/synclink_cs.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``
diff --git a/Documentation/translations/zh_TW/process/magic-number.rst b/Documentation/translations/zh_TW/process/magic-number.rst
index 7d176a87ec3c..8a64f56ae267 100644
--- a/Documentation/translations/zh_TW/process/magic-number.rst
+++ b/Documentation/translations/zh_TW/process/magic-number.rst
@@ -64,7 +64,6 @@ PG_MAGIC              'P'              pg_{read,write}_hdr      ``include/linux/
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
 SLIP_MAGIC            0x5302           slip                     ``drivers/net/slip.h``
-MGSLPC_MAGIC          0x5402           mgslpc_info              ``drivers/char/pcmcia/synclink_cs.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index b2735be81ab2..262f087bfc01 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -137,7 +137,6 @@ struct _input_signal_events {
 typedef struct _mgslpc_info {
 	struct tty_port		port;
 	void *if_ptr;	/* General purpose pointer (used by SPPP) */
-	int			magic;
 	int			line;
 
 	struct mgsl_icount	icount;
@@ -228,8 +227,6 @@ typedef struct _mgslpc_info {
 
 } MGSLPC_INFO;
 
-#define MGSLPC_MAGIC 0x5402
-
 /*
  * The size of the serial xmit buffer is 1 page, or 4096 bytes
  */
@@ -525,7 +522,6 @@ static int mgslpc_probe(struct pcmcia_device *link)
 		return -ENOMEM;
 	}
 
-	info->magic = MGSLPC_MAGIC;
 	tty_port_init(&info->port);
 	info->port.ops = &mgslpc_port_ops;
 	INIT_WORK(&info->task, bh_handler);
@@ -652,8 +648,6 @@ static inline bool mgslpc_paranoia_check(MGSLPC_INFO *info,
 					char *name, const char *routine)
 {
 #ifdef MGSLPC_PARANOIA_CHECK
-	static const char *badmagic =
-		"Warning: bad magic number for mgsl struct (%s) in %s\n";
 	static const char *badinfo =
 		"Warning: null mgslpc_info for (%s) in %s\n";
 
@@ -661,10 +655,6 @@ static inline bool mgslpc_paranoia_check(MGSLPC_INFO *info,
 		printk(badinfo, name, routine);
 		return true;
 	}
-	if (info->magic != MGSLPC_MAGIC) {
-		printk(badmagic, name, routine);
-		return true;
-	}
 #else
 	if (!info)
 		return true;
-- 
2.30.2

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