renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-05 20:24:09 +08:00
Code

Merge branch 'for-6.2/hyperv' into for-linus

Browse Source 
- functionally equivalent code cleanups for hyperv driver (Paulo Miguel Almeida)
This commit is contained in:
Jiri Kosina 2022-12-13 14:32:07 +01:00
commit 91e9b02185
1 changed files with 10 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/hid/hid-hyperv.c
View File

@ -22,9 +22,6 @@ struct hv_input_dev_info {
unsigned short reserved[11];
};
/* The maximum size of a synthetic input message. */
#define SYNTHHID_MAX_INPUT_REPORT_SIZE 16
/*
* Current version
*
@ -59,11 +56,6 @@ struct synthhid_msg_hdr {
u32 size;
};
struct synthhid_msg {
struct synthhid_msg_hdr header;
char data[1]; /* Enclosed message */
};
union synthhid_version {
struct {
u16 minor_version;
@ -99,7 +91,7 @@ struct synthhid_device_info_ack {
struct synthhid_input_report {
struct synthhid_msg_hdr header;
char buffer[1];
char buffer[];
};
#pragma pack(pop)
@ -118,7 +110,7 @@ enum pipe_prot_msg_type {
struct pipe_prt_msg {
enum pipe_prot_msg_type type;
u32 size;
char data[1];
char data[];
};
struct mousevsc_prt_msg {
@ -232,7 +224,7 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
ret = vmbus_sendpacket(input_device->device->channel,
&ack,
sizeof(struct pipe_prt_msg) - sizeof(unsigned char) +
sizeof(struct pipe_prt_msg) +
sizeof(struct synthhid_device_info_ack),
(unsigned long)&ack,
VM_PKT_DATA_INBAND,
@ -251,7 +243,7 @@ static void mousevsc_on_receive(struct hv_device *device,
struct vmpacket_descriptor *packet)
{
struct pipe_prt_msg *pipe_msg;
struct synthhid_msg *hid_msg;
struct synthhid_msg_hdr *hid_msg_hdr;
struct mousevsc_dev *input_dev = hv_get_drvdata(device);
struct synthhid_input_report *input_report;
size_t len;
@ -262,25 +254,23 @@ static void mousevsc_on_receive(struct hv_device *device,
if (pipe_msg->type != PIPE_MESSAGE_DATA)
return;
hid_msg = (struct synthhid_msg *)pipe_msg->data;
hid_msg_hdr = (struct synthhid_msg_hdr *)pipe_msg->data;
switch (hid_msg->header.type) {
switch (hid_msg_hdr->type) {
case SYNTH_HID_PROTOCOL_RESPONSE:
/*
* While it will be impossible for us to protect against
* malicious/buggy hypervisor/host, add a check here to
* ensure we don't corrupt memory.
*/
if ((pipe_msg->size + sizeof(struct pipe_prt_msg)
- sizeof(unsigned char))
if (struct_size(pipe_msg, data, pipe_msg->size)
> sizeof(struct mousevsc_prt_msg)) {
WARN_ON(1);
break;
}
memcpy(&input_dev->protocol_resp, pipe_msg,
pipe_msg->size + sizeof(struct pipe_prt_msg) -
sizeof(unsigned char));
struct_size(pipe_msg, data, pipe_msg->size));
complete(&input_dev->wait_event);
break;
@ -311,7 +301,7 @@ static void mousevsc_on_receive(struct hv_device *device,
break;
default:
pr_err("unsupported hid msg type - type %d len %d\n",
hid_msg->header.type, hid_msg->header.size);
hid_msg_hdr->type, hid_msg_hdr->size);
break;
}
@ -359,8 +349,7 @@ static int mousevsc_connect_to_vsp(struct hv_device *device)
request->request.version_requested.version = SYNTHHID_INPUT_VERSION;
ret = vmbus_sendpacket(device->channel, request,
sizeof(struct pipe_prt_msg) -
sizeof(unsigned char) +
sizeof(struct pipe_prt_msg) +
sizeof(struct synthhid_protocol_request),
(unsigned long)request,
VM_PKT_DATA_INBAND,