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| author | Paul Fulghum <paulkf@microgate.com> | 2005-09-09 13:02:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 13:57:33 -0700 |
| commit | 4a918bc233c8b9537fbc05a8bbb33928a4980cc5 (patch) | |
| tree | 4ea5b278ce5f9c57c81feb88910cd107213eac16 /drivers/char/synclink.c | |
| parent | 9d5c1e1bf2b906966609f8cf4a844e61adb86bcd (diff) | |
| download | linux-4a918bc233c8b9537fbc05a8bbb33928a4980cc5.tar.gz | |
[PATCH] synclink.c: compiler optimisation fix
Make some fields of DMA descriptor volatile to prevent compiler optimizations. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/synclink.c')
| -rw-r--r-- | drivers/char/synclink.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index 37c8bea8e2b0..747eb8d18166 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -1,7 +1,7 @@ /* * 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); |