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authorLinsys Contractor Mithlesh Thukral <mithlesh@netxen.com>2007-03-13 04:15:06 -0800
committerJeff Garzik <jeff@garzik.org>2007-03-15 10:59:54 -0400
commitb58ecad8d6ca83e97cd2928a439efb49267539dc (patch)
tree691bfcc04a909bd3e77550d7abd15595c08cb4ac /drivers/net/netxen/netxen_nic_init.c
parent8b902aea40544bc9e4de913b491dc3a3411fd5d0 (diff)
downloadop-kernel-dev-b58ecad8d6ca83e97cd2928a439efb49267539dc.zip
op-kernel-dev-b58ecad8d6ca83e97cd2928a439efb49267539dc.tar.gz
NetXen: Fix softlockup seen during hardware access
NetXen: This will fix a softlock seen on some machines. The reason was too much time was spent waiting for hardware access to go through. Signed-off by: Mithlesh Thukral <mithlesh@netxen.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/netxen/netxen_nic_init.c')
-rw-r--r--drivers/net/netxen/netxen_nic_init.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index 586d32b..229aa1c 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -42,6 +42,8 @@ struct crb_addr_pair {
u32 data;
};
+unsigned long last_schedule_time;
+
#define NETXEN_MAX_CRB_XFORM 60
static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
#define NETXEN_ADDR_ERROR (0xffffffff)
@@ -404,9 +406,14 @@ static inline int do_rom_fast_write(struct netxen_adapter *adapter, int addr,
static inline int
do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
{
+ if (jiffies > (last_schedule_time + (8 * HZ))) {
+ last_schedule_time = jiffies;
+ schedule();
+ }
+
netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
- udelay(70); /* prevent bursting on CRB */
+ udelay(100); /* prevent bursting on CRB */
netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
if (netxen_wait_rom_done(adapter)) {
@@ -415,7 +422,7 @@ do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
}
/* reset abyte_cnt and dummy_byte_cnt */
netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
- udelay(70); /* prevent bursting on CRB */
+ udelay(100); /* prevent bursting on CRB */
netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
*valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
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