diff options
Diffstat (limited to 'drivers/char/agp')
| -rw-r--r-- | drivers/char/agp/sworks-agp.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/char/agp/sworks-agp.c b/drivers/char/agp/sworks-agp.c index a9fb12c20eb..53968973f89 100644 --- a/drivers/char/agp/sworks-agp.c +++ b/drivers/char/agp/sworks-agp.c @@ -242,13 +242,27 @@ static int serverworks_fetch_size(void) */ static void serverworks_tlbflush(struct agp_memory *temp) { + unsigned long timeout; + writeb(1, serverworks_private.registers+SVWRKS_POSTFLUSH); - while (readb(serverworks_private.registers+SVWRKS_POSTFLUSH) == 1) + timeout = jiffies + 3*HZ; + while (readb(serverworks_private.registers+SVWRKS_POSTFLUSH) == 1) { cpu_relax(); + if (time_after(jiffies, timeout)) { + printk(KERN_ERR PFX "TLB post flush took more than 3 seconds\n"); + break; + } + } writel(1, serverworks_private.registers+SVWRKS_DIRFLUSH); - while(readl(serverworks_private.registers+SVWRKS_DIRFLUSH) == 1) + timeout = jiffies + 3*HZ; + while (readl(serverworks_private.registers+SVWRKS_DIRFLUSH) == 1) { cpu_relax(); + if (time_after(jiffies, timeout)) { + printk(KERN_ERR PFX "TLB Dir flush took more than 3 seconds\n"); + break; + } + } } static int serverworks_configure(void) |