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sfc: Fix oops in register dump after mapping change

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Commit 747df2258b ('sfc: Always map MCDI
shared memory as uncacheable') introduced a separate mapping for the
MCDI shared memory (MC_TREG_SMEM).  This means we can no longer easily
include it in the register dump.  Since it is not particularly useful
in debugging, substitute a recognisable dummy value.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2011-05-16 06:13:49 +00:00 committed by David S. Miller
parent 0e3d32c3a8
commit 867955f568
1 changed files with 7 additions and 0 deletions
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7
drivers/net/sfc/nic.c
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@ -1937,6 +1937,13 @@ void efx_nic_get_regs(struct efx_nic *efx, void *buf)
size = min_t(size_t, table->step, 16);
if (table->offset >= efx->type->mem_map_size) {
/* No longer mapped; return dummy data */
memcpy(buf, "\xde\xc0\xad\xde", 4);
buf += table->rows * size;
continue;
}
for (i = 0; i < table->rows; i++) {
switch (table->step) {
case 4: /* 32-bit register or SRAM */