linux-kernel - [PATCH 16/68] NET: pc300, do not zero global variables

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Date:	Mon,  5 Mar 2012 14:52:03 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	gregkh@...uxfoundation.org
Cc:	alan@...ux.intel.com, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org, jirislaby@...il.com,
	netdev@...r.kernel.org
Subject: [PATCH 16/68] NET: pc300, do not zero global variables

They are in .bss which is initialized to zeros when the module is
loaded/kernel booted.

What a strange way to do the initialization once in the pci probe
routine...

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: netdev@...r.kernel.org
---
 drivers/net/wan/pc300_drv.c |    4 ----
 drivers/net/wan/pc300_tty.c |   18 ------------------
 2 files changed, 22 deletions(-)

diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index 1eeedd6..a6dd00d 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -299,7 +299,6 @@ void cpc_tty_init(pc300dev_t * dev);
 void cpc_tty_unregister_service(pc300dev_t * pc300dev);
 void cpc_tty_receive(pc300dev_t * pc300dev);
 void cpc_tty_trigger_poll(pc300dev_t * pc300dev);
-void cpc_tty_reset_var(void);
 #endif
 
 /************************/
@@ -3421,9 +3420,6 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (first_time) {
 		first_time = 0;
 		show_version();
-#ifdef CONFIG_PC300_MLPPP
-		cpc_tty_reset_var();
-#endif
 	}
 
 	if ((err = pci_enable_device(pdev)) < 0)
diff --git a/drivers/net/wan/pc300_tty.c b/drivers/net/wan/pc300_tty.c
index d47d2cd..4709f42 100644
--- a/drivers/net/wan/pc300_tty.c
+++ b/drivers/net/wan/pc300_tty.c
@@ -139,7 +139,6 @@ void cpc_tty_init(pc300dev_t *dev);
 void cpc_tty_unregister_service(pc300dev_t *pc300dev);
 void cpc_tty_receive(pc300dev_t *pc300dev);
 void cpc_tty_trigger_poll(pc300dev_t *pc300dev);
-void cpc_tty_reset_var(void);
 
 /*
  * PC300 TTY clear "signal"
@@ -1078,20 +1077,3 @@ void cpc_tty_trigger_poll(pc300dev_t *pc300dev)
 	}
 	schedule_work(&(cpc_tty->tty_tx_work)); 
 } 
-
-/*
- * PC300 TTY reset var routine
- * This routine is called by pc300driver to init the TTY area. 
- */
-
-void cpc_tty_reset_var(void)
-{
-	int i ; 
-
-	CPC_TTY_DBG("hdlcX-tty: reset variables\n");
-	/* reset  the tty_driver structure - serial_drv */ 
-	memset(&serial_drv, 0, sizeof(struct tty_driver));
-	for (i=0; i < CPC_TTY_NPORTS; i++){
-		memset(&cpc_tty_area[i],0, sizeof(st_cpc_tty_area)); 
-	}
-}
-- 
1.7.9.2


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