sfc: Do not initialise buffer in efx_alloc_special_buffer()

Currently we initialise the newly allocated buffer to all-1s, which is
important for event queues but not for descriptor queues.  And since
we also do that in efx_nic_init_eventq(), it is completely pointless
to do it here.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c
index 368659d..1327f29 100644 (file)
--- a/drivers/net/ethernet/sfc/nic.c
+++ b/drivers/net/ethernet/sfc/nic.c
@@ -255,9 +255,6 @@ static int efx_alloc_special_buffer(struct efx_nic *efx,
        buffer->entries = len / EFX_BUF_SIZE;
        BUG_ON(buffer->dma_addr & (EFX_BUF_SIZE - 1));
 
-       /* All zeros is a potentially valid event so memset to 0xff */
-       memset(buffer->addr, 0xff, len);
-
        /* Select new buffer ID */
        buffer->index = efx->next_buffer_table;
        efx->next_buffer_table += buffer->entries;