1 files changed, 23 insertions, 19 deletions

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 69ea36f07b4d..602ca86a6488 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/hyperv.h>
+#include <linux/uio.h>
 
 #include "hyperv_vmbus.h"
 
@@ -554,14 +555,14 @@ EXPORT_SYMBOL_GPL(vmbus_close);
  *
  * Mainly used by Hyper-V drivers.
  */
-int vmbus_sendpacket(struct vmbus_channel *channel, const void *buffer,
+int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer,
                            u32 bufferlen, u64 requestid,
                            enum vmbus_packet_type type, u32 flags)
 {
         struct vmpacket_descriptor desc;
         u32 packetlen = sizeof(struct vmpacket_descriptor) + bufferlen;
         u32 packetlen_aligned = ALIGN(packetlen, sizeof(u64));
-        struct scatterlist bufferlist[3];
+        struct kvec bufferlist[3];
         u64 aligned_data = 0;
         int ret;
         bool signal = false;
@@ -575,11 +576,12 @@ int vmbus_sendpacket(struct vmbus_channel *channel, const void *buffer,
         desc.len8 = (u16)(packetlen_aligned >> 3);
         desc.trans_id = requestid;
 
-        sg_init_table(bufferlist, 3);
-        sg_set_buf(&bufferlist[0], &desc, sizeof(struct vmpacket_descriptor));
-        sg_set_buf(&bufferlist[1], buffer, bufferlen);
-        sg_set_buf(&bufferlist[2], &aligned_data,
-                   packetlen_aligned - packetlen);
+        bufferlist[0].iov_base = &desc;
+        bufferlist[0].iov_len = sizeof(struct vmpacket_descriptor);
+        bufferlist[1].iov_base = buffer;
+        bufferlist[1].iov_len = bufferlen;
+        bufferlist[2].iov_base = &aligned_data;
+        bufferlist[2].iov_len = (packetlen_aligned - packetlen);
 
         ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, &signal);
 
@@ -605,7 +607,7 @@ int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
         u32 descsize;
         u32 packetlen;
         u32 packetlen_aligned;
-        struct scatterlist bufferlist[3];
+        struct kvec bufferlist[3];
         u64 aligned_data = 0;
         bool signal = false;
 
@@ -637,11 +639,12 @@ int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
                 desc.range[i].pfn        = pagebuffers[i].pfn;
         }
 
-        sg_init_table(bufferlist, 3);
-        sg_set_buf(&bufferlist[0], &desc, descsize);
-        sg_set_buf(&bufferlist[1], buffer, bufferlen);
-        sg_set_buf(&bufferlist[2], &aligned_data,
-                packetlen_aligned - packetlen);
+        bufferlist[0].iov_base = &desc;
+        bufferlist[0].iov_len = descsize;
+        bufferlist[1].iov_base = buffer;
+        bufferlist[1].iov_len = bufferlen;
+        bufferlist[2].iov_base = &aligned_data;
+        bufferlist[2].iov_len = (packetlen_aligned - packetlen);
 
         ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, &signal);
 
@@ -665,7 +668,7 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
         u32 descsize;
         u32 packetlen;
         u32 packetlen_aligned;
-        struct scatterlist bufferlist[3];
+        struct kvec bufferlist[3];
         u64 aligned_data = 0;
         bool signal = false;
         u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->offset,
@@ -700,11 +703,12 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
         memcpy(desc.range.pfn_array, multi_pagebuffer->pfn_array,
                pfncount * sizeof(u64));
 
-        sg_init_table(bufferlist, 3);
-        sg_set_buf(&bufferlist[0], &desc, descsize);
-        sg_set_buf(&bufferlist[1], buffer, bufferlen);
-        sg_set_buf(&bufferlist[2], &aligned_data,
-                packetlen_aligned - packetlen);
+        bufferlist[0].iov_base = &desc;
+        bufferlist[0].iov_len = descsize;
+        bufferlist[1].iov_base = buffer;
+        bufferlist[1].iov_len = bufferlen;
+        bufferlist[2].iov_base = &aligned_data;
+        bufferlist[2].iov_len = (packetlen_aligned - packetlen);
 
         ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, &signal);