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vmw_balloon: general style cleanup

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Change all the remaining return values to int to avoid mistakes. Reduce
indentation when possible.

Reviewed-by: Xavier Deguillard <xdeguillard@vmware.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nadav Amit 2018-09-20 10:30:19 -07:00 committed by Greg Kroah-Hartman
parent 6e4453b321
commit 22d293ee8d
1 changed files with 23 additions and 16 deletions
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39
drivers/misc/vmw_balloon.c
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@ -477,10 +477,9 @@ vmballoon_cmd(struct vmballoon *b, unsigned long cmd, unsigned long arg1,
* Send "start" command to the host, communicating supported version * Send "start" command to the host, communicating supported version
* of the protocol. * of the protocol.
*/ */
static bool vmballoon_send_start(struct vmballoon *b, unsigned long req_caps) static int vmballoon_send_start(struct vmballoon *b, unsigned long req_caps)
{ {
unsigned long status, capabilities; unsigned long status, capabilities;
bool success;
status = __vmballoon_cmd(b, VMW_BALLOON_CMD_START, req_caps, 0, status = __vmballoon_cmd(b, VMW_BALLOON_CMD_START, req_caps, 0,
&capabilities); &capabilities);
@ -488,14 +487,12 @@ static bool vmballoon_send_start(struct vmballoon *b, unsigned long req_caps)
switch (status) { switch (status) {
case VMW_BALLOON_SUCCESS_WITH_CAPABILITIES: case VMW_BALLOON_SUCCESS_WITH_CAPABILITIES:
b->capabilities = capabilities; b->capabilities = capabilities;
success = true;
break; break;
case VMW_BALLOON_SUCCESS: case VMW_BALLOON_SUCCESS:
b->capabilities = VMW_BALLOON_BASIC_CMDS; b->capabilities = VMW_BALLOON_BASIC_CMDS;
success = true;
break; break;
default: default:
success = false; return -EIO;
} }
/* /*
@ -509,26 +506,29 @@ static bool vmballoon_send_start(struct vmballoon *b, unsigned long req_caps)
b->max_page_size = VMW_BALLOON_2M_PAGE; b->max_page_size = VMW_BALLOON_2M_PAGE;
return success; return 0;
} }
/* /**
* vmballoon_send_guest_id - communicate guest type to the host.
*
* @b: pointer to the balloon.
*
* Communicate guest type to the host so that it can adjust ballooning * Communicate guest type to the host so that it can adjust ballooning
* algorithm to the one most appropriate for the guest. This command * algorithm to the one most appropriate for the guest. This command
* is normally issued after sending "start" command and is part of * is normally issued after sending "start" command and is part of
* standard reset sequence. * standard reset sequence.
*
* Return: zero on success or appropriate error code.
*/ */
static bool vmballoon_send_guest_id(struct vmballoon *b) static int vmballoon_send_guest_id(struct vmballoon *b)
{ {
unsigned long status; unsigned long status;
status = vmballoon_cmd(b, VMW_BALLOON_CMD_GUEST_ID, status = vmballoon_cmd(b, VMW_BALLOON_CMD_GUEST_ID,
VMW_BALLOON_GUEST_ID, 0); VMW_BALLOON_GUEST_ID, 0);
if (status == VMW_BALLOON_SUCCESS) return status == VMW_BALLOON_SUCCESS ? 0 : -EIO;
return true;
return false;
} }
/** /**
@ -1215,8 +1215,15 @@ static void vmballoon_vmci_cleanup(struct vmballoon *b)
} }
} }
/* /**
* Initialize vmci doorbell, to get notified as soon as balloon changes * vmballoon_vmci_init - Initialize vmci doorbell.
*
* @b: pointer to the balloon.
*
* Return: zero on success or when wakeup command not supported. Error-code
* otherwise.
*
* Initialize vmci doorbell, to get notified as soon as balloon changes.
*/ */
static int vmballoon_vmci_init(struct vmballoon *b) static int vmballoon_vmci_init(struct vmballoon *b)
{ {
@ -1278,7 +1285,7 @@ static void vmballoon_reset(struct vmballoon *b)
/* free all pages, skipping monitor unlock */ /* free all pages, skipping monitor unlock */
vmballoon_pop(b); vmballoon_pop(b);
if (!vmballoon_send_start(b, VMW_BALLOON_CAPABILITIES)) if (vmballoon_send_start(b, VMW_BALLOON_CAPABILITIES))
return; return;
if ((b->capabilities & VMW_BALLOON_BATCHED_CMDS) != 0) { if ((b->capabilities & VMW_BALLOON_BATCHED_CMDS) != 0) {
@ -1302,7 +1309,7 @@ static void vmballoon_reset(struct vmballoon *b)
if (error) if (error)
pr_err("failed to initialize vmci doorbell\n"); pr_err("failed to initialize vmci doorbell\n");
if (!vmballoon_send_guest_id(b)) if (vmballoon_send_guest_id(b))
pr_err("failed to send guest ID to the host\n"); pr_err("failed to send guest ID to the host\n");
up_write(&b->conf_sem); up_write(&b->conf_sem);