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Commit 4a918bc2 authored by Paul Fulghum's avatar Paul Fulghum Committed by Linus Torvalds
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[PATCH] synclink.c: compiler optimisation fix 



Make some fields of DMA descriptor volatile to prevent compiler optimizations.

Signed-off-by: default avatarPaul Fulghum <paulkf@microgate.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 9d5c1e1b

drivers/char/synclink.c

+5 −5
Original line number Diff line number Diff line 
/*

 * linux/drivers/char/synclink.c

 *

 * $Id: synclink.c,v 4.28 2004/08/11 19:30:01 paulkf Exp $

 * $Id: synclink.c,v 4.37 2005/09/07 13:13:19 paulkf Exp $

 *

 * Device driver for Microgate SyncLink ISA and PCI

 * high speed multiprotocol serial adapters.
@@ -141,9 +141,9 @@ static MGSL_PARAMS default_params = { 
typedef struct _DMABUFFERENTRY

{

	u32 phys_addr;	/* 32-bit flat physical address of data buffer */

	u16 count;	/* buffer size/data count */

	u16 status;	/* Control/status field */

	u16 rcc;	/* character count field */

	volatile u16 count;	/* buffer size/data count */

	volatile u16 status;	/* Control/status field */

	volatile u16 rcc;	/* character count field */

	u16 reserved;	/* padding required by 16C32 */

	u32 link;	/* 32-bit flat link to next buffer entry */

	char *virt_addr;	/* virtual address of data buffer */
@@ -896,7 +896,7 @@ module_param_array(txdmabufs, int, NULL, 0); 
module_param_array(txholdbufs, int, NULL, 0);



static char *driver_name = "SyncLink serial driver";

static char *driver_version = "$Revision: 4.28 $";

static char *driver_version = "$Revision: 4.37 $";



static int synclink_init_one (struct pci_dev *dev,

				     const struct pci_device_id *ent);