diff options
| author | Haiyang Zhang <haiyangz@microsoft.com> | 2011-12-15 13:45:15 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-04 16:13:05 -0800 |
| commit | 453263421f88b4a7e508c2e7b639c97e99c5b118 (patch) | |
| tree | b38aaaccac96fda0b3b6e25c05b0bbbbe7a84567 /drivers/net/hyperv/netvsc_drv.c | |
| parent | 3b148be0df8e45a0259d7e84001cf02e897af614 (diff) | |
net/hyperv: Remove unnecessary kmap_atomic in netvsc driver
__get_free_pages() doesn't return HI memory, so the memory is always mapped.
kmap_atomic() is not necessary here. This patch removes the kmap_atomic()
calls and related code for locking and page manipulation.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/net/hyperv/netvsc_drv.c')
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 7da85ebd7ac6..b7cbd126f20a 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -251,9 +251,6 @@ int netvsc_recv_callback(struct hv_device *device_obj, { struct net_device *net = dev_get_drvdata(&device_obj->device); struct sk_buff *skb; - void *data; - int i; - unsigned long flags; struct netvsc_device *net_device; net_device = hv_get_drvdata(device_obj); @@ -272,27 +269,12 @@ int netvsc_recv_callback(struct hv_device *device_obj, return 0; } - /* for kmap_atomic */ - local_irq_save(flags); - /* * Copy to skb. This copy is needed here since the memory pointed by * hv_netvsc_packet cannot be deallocated */ - for (i = 0; i < packet->page_buf_cnt; i++) { - data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn), - KM_IRQ1); - data = (void *)(unsigned long)data + - packet->page_buf[i].offset; - - memcpy(skb_put(skb, packet->page_buf[i].len), data, - packet->page_buf[i].len); - - kunmap_atomic((void *)((unsigned long)data - - packet->page_buf[i].offset), KM_IRQ1); - } - - local_irq_restore(flags); + memcpy(skb_put(skb, packet->total_data_buflen), packet->data, + packet->total_data_buflen); skb->protocol = eth_type_trans(skb, net); skb->ip_summed = CHECKSUM_NONE; |