diff options
Diffstat (limited to 'drivers/char/agp/sworks-agp.c')
| -rw-r--r-- | drivers/char/agp/sworks-agp.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/char/agp/sworks-agp.c b/drivers/char/agp/sworks-agp.c index 71ea59a1dbeb..3f8f7fa6b0ff 100644 --- a/drivers/char/agp/sworks-agp.c +++ b/drivers/char/agp/sworks-agp.c @@ -102,19 +102,17 @@ static int serverworks_create_gatt_pages(int nr_tables) int retval = 0; int i; - tables = kmalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *), + tables = kzalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *), GFP_KERNEL); - if (tables == NULL) { + if (tables == NULL) return -ENOMEM; - } - memset(tables, 0, sizeof(struct serverworks_page_map *) * (nr_tables + 1)); + for (i = 0; i < nr_tables; i++) { - entry = kmalloc(sizeof(struct serverworks_page_map), GFP_KERNEL); + entry = kzalloc(sizeof(struct serverworks_page_map), GFP_KERNEL); if (entry == NULL) { retval = -ENOMEM; break; } - memset(entry, 0, sizeof(struct serverworks_page_map)); tables[i] = entry; retval = serverworks_create_page_map(entry); if (retval != 0) break; @@ -244,13 +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) |