Re: [PATCH v2] Drivers: hv: Cosmetic changes for hv.c and balloon.c
From: Anirudh Rayabharam
Date: Tue Apr 02 2024 - 11:17:02 EST
On Mon, Apr 01, 2024 at 09:06:21PM -0700, Aditya Nagesh wrote:
> Fix issues reported by checkpatch.pl script in hv.c and
> balloon.c
> - Remove unnecessary parentheses
> - Remove extra newlines
> - Remove extra spaces
> - Add spaces between comparison operators
> - Remove comparison with NULL in if statements
>
> No functional changes intended
>
> Signed-off-by: Aditya Nagesh <adityanagesh@xxxxxxxxxxxxxxxxxxx>
> ---
> [V2]
> Change Subject from "Drivers: hv: Fix Issues reported by checkpatch.pl script"
> to "Drivers: hv: Cosmetic changes for hv.c and balloon.c"
>
> drivers/hv/hv.c | 35 ++++++-------
> drivers/hv/hv_balloon.c | 113 +++++++++++++++-------------------------
> 2 files changed, 60 insertions(+), 88 deletions(-)
>
> diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
> index a8ad728354cb..4906611475fb 100644
> --- a/drivers/hv/hv.c
> +++ b/drivers/hv/hv.c
> @@ -45,7 +45,7 @@ int hv_init(void)
> * This involves a hypercall.
> */
> int hv_post_message(union hv_connection_id connection_id,
> - enum hv_message_type message_type,
> + enum hv_message_type message_type,
> void *payload, size_t payload_size)
> {
> struct hv_input_post_message *aligned_msg;
> @@ -86,7 +86,7 @@ int hv_post_message(union hv_connection_id connection_id,
> status = HV_STATUS_INVALID_PARAMETER;
> } else {
> status = hv_do_hypercall(HVCALL_POST_MESSAGE,
> - aligned_msg, NULL);
> + aligned_msg, NULL);
> }
>
> local_irq_restore(flags);
> @@ -111,7 +111,7 @@ int hv_synic_alloc(void)
>
> hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct cpumask),
> GFP_KERNEL);
> - if (hv_context.hv_numa_map == NULL) {
> + if (!hv_context.hv_numa_map) {
> pr_err("Unable to allocate NUMA map\n");
> goto err;
> }
> @@ -120,11 +120,11 @@ int hv_synic_alloc(void)
> hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu);
>
> tasklet_init(&hv_cpu->msg_dpc,
> - vmbus_on_msg_dpc, (unsigned long) hv_cpu);
> + vmbus_on_msg_dpc, (unsigned long)hv_cpu);
>
> if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
> hv_cpu->post_msg_page = (void *)get_zeroed_page(GFP_ATOMIC);
> - if (hv_cpu->post_msg_page == NULL) {
> + if (!hv_cpu->post_msg_page) {
> pr_err("Unable to allocate post msg page\n");
> goto err;
> }
> @@ -147,14 +147,14 @@ int hv_synic_alloc(void)
> if (!ms_hyperv.paravisor_present && !hv_root_partition) {
> hv_cpu->synic_message_page =
> (void *)get_zeroed_page(GFP_ATOMIC);
> - if (hv_cpu->synic_message_page == NULL) {
> + if (!hv_cpu->synic_message_page) {
> pr_err("Unable to allocate SYNIC message page\n");
> goto err;
> }
>
> hv_cpu->synic_event_page =
> (void *)get_zeroed_page(GFP_ATOMIC);
> - if (hv_cpu->synic_event_page == NULL) {
> + if (!hv_cpu->synic_event_page) {
> pr_err("Unable to allocate SYNIC event page\n");
>
> free_page((unsigned long)hv_cpu->synic_message_page);
> @@ -203,14 +203,13 @@ int hv_synic_alloc(void)
> return ret;
> }
>
> -
> void hv_synic_free(void)
> {
> int cpu, ret;
>
> for_each_present_cpu(cpu) {
> - struct hv_per_cpu_context *hv_cpu
> - = per_cpu_ptr(hv_context.cpu_context, cpu);
> + struct hv_per_cpu_context *hv_cpu =
> + per_cpu_ptr(hv_context.cpu_context, cpu);
>
> /* It's better to leak the page if the encryption fails. */
> if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
> @@ -262,8 +261,8 @@ void hv_synic_free(void)
> */
> void hv_synic_enable_regs(unsigned int cpu)
> {
> - struct hv_per_cpu_context *hv_cpu
> - = per_cpu_ptr(hv_context.cpu_context, cpu);
> + struct hv_per_cpu_context *hv_cpu =
> + per_cpu_ptr(hv_context.cpu_context, cpu);
> union hv_synic_simp simp;
> union hv_synic_siefp siefp;
> union hv_synic_sint shared_sint;
> @@ -277,8 +276,8 @@ void hv_synic_enable_regs(unsigned int cpu)
> /* Mask out vTOM bit. ioremap_cache() maps decrypted */
> u64 base = (simp.base_simp_gpa << HV_HYP_PAGE_SHIFT) &
> ~ms_hyperv.shared_gpa_boundary;
> - hv_cpu->synic_message_page
> - = (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
> + hv_cpu->synic_message_page =
> + (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
> if (!hv_cpu->synic_message_page)
> pr_err("Fail to map synic message page.\n");
> } else {
> @@ -296,8 +295,8 @@ void hv_synic_enable_regs(unsigned int cpu)
> /* Mask out vTOM bit. ioremap_cache() maps decrypted */
> u64 base = (siefp.base_siefp_gpa << HV_HYP_PAGE_SHIFT) &
> ~ms_hyperv.shared_gpa_boundary;
> - hv_cpu->synic_event_page
> - = (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
> + hv_cpu->synic_event_page =
> + (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
> if (!hv_cpu->synic_event_page)
> pr_err("Fail to map synic event page.\n");
> } else {
> @@ -348,8 +347,8 @@ int hv_synic_init(unsigned int cpu)
> */
> void hv_synic_disable_regs(unsigned int cpu)
> {
> - struct hv_per_cpu_context *hv_cpu
> - = per_cpu_ptr(hv_context.cpu_context, cpu);
> + struct hv_per_cpu_context *hv_cpu =
> + per_cpu_ptr(hv_context.cpu_context, cpu);
> union hv_synic_sint shared_sint;
> union hv_synic_simp simp;
> union hv_synic_siefp siefp;
> diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
> index e000fa3b9f97..0b3c61e0ad33 100644
> --- a/drivers/hv/hv_balloon.c
> +++ b/drivers/hv/hv_balloon.c
> @@ -41,8 +41,6 @@
> * Begin protocol definitions.
> */
>
> -
> -
> /*
> * Protocol versions. The low word is the minor version, the high word the major
> * version.
> @@ -71,8 +69,6 @@ enum {
> DYNMEM_PROTOCOL_VERSION_CURRENT = DYNMEM_PROTOCOL_VERSION_WIN10
> };
>
> -
> -
> /*
> * Message Types
> */
> @@ -101,7 +97,6 @@ enum dm_message_type {
> DM_VERSION_1_MAX = 12
> };
>
> -
> /*
> * Structures defining the dynamic memory management
> * protocol.
> @@ -115,7 +110,6 @@ union dm_version {
> __u32 version;
> } __packed;
>
> -
> union dm_caps {
> struct {
> __u64 balloon:1;
> @@ -148,8 +142,6 @@ union dm_mem_page_range {
> __u64 page_range;
> } __packed;
>
> -
> -
> /*
> * The header for all dynamic memory messages:
> *
> @@ -174,7 +166,6 @@ struct dm_message {
> __u8 data[]; /* enclosed message */
> } __packed;
>
> -
> /*
> * Specific message types supporting the dynamic memory protocol.
> */
> @@ -271,7 +262,6 @@ struct dm_status {
> __u32 io_diff;
> } __packed;
>
> -
> /*
> * Message to ask the guest to allocate memory - balloon up message.
> * This message is sent from the host to the guest. The guest may not be
> @@ -286,14 +276,13 @@ struct dm_balloon {
> __u32 reservedz;
> } __packed;
>
> -
> /*
> * Balloon response message; this message is sent from the guest
> * to the host in response to the balloon message.
> *
> * reservedz: Reserved; must be set to zero.
> * more_pages: If FALSE, this is the last message of the transaction.
> - * if TRUE there will atleast one more message from the guest.
> + * if TRUE there will at least one more message from the guest.
Add the missing "be" while you are at it.
.. there will be at least one ...
> *
> * range_count: The number of ranges in the range array.
> *
> @@ -314,7 +303,7 @@ struct dm_balloon_response {
> * to the guest to give guest more memory.
> *
> * more_pages: If FALSE, this is the last message of the transaction.
> - * if TRUE there will atleast one more message from the guest.
> + * if TRUE there will at least one more message from the guest.
same as above
> *
> * reservedz: Reserved; must be set to zero.
> *
> @@ -342,7 +331,6 @@ struct dm_unballoon_response {
> struct dm_header hdr;
> } __packed;
>
> -
> /*
> * Hot add request message. Message sent from the host to the guest.
> *
> @@ -390,7 +378,6 @@ enum dm_info_type {
> MAX_INFO_TYPE
> };
>
> -
> /*
> * Header for the information message.
> */
> @@ -480,10 +467,10 @@ static unsigned long last_post_time;
>
> static int hv_hypercall_multi_failure;
>
> -module_param(hot_add, bool, (S_IRUGO | S_IWUSR));
> +module_param(hot_add, bool, 0644);
> MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
>
> -module_param(pressure_report_delay, uint, (S_IRUGO | S_IWUSR));
> +module_param(pressure_report_delay, uint, 0644);
> MODULE_PARM_DESC(pressure_report_delay, "Delay in secs in reporting pressure");
> static atomic_t trans_id = ATOMIC_INIT(0);
>
> @@ -502,7 +489,6 @@ enum hv_dm_state {
> DM_INIT_ERROR
> };
>
> -
> static __u8 recv_buffer[HV_HYP_PAGE_SIZE];
> static __u8 balloon_up_send_buffer[HV_HYP_PAGE_SIZE];
> #define PAGES_IN_2M (2 * 1024 * 1024 / PAGE_SIZE)
> @@ -595,12 +581,12 @@ static inline bool has_pfn_is_backed(struct hv_hotadd_state *has,
> struct hv_hotadd_gap *gap;
>
> /* The page is not backed. */
> - if ((pfn < has->covered_start_pfn) || (pfn >= has->covered_end_pfn))
> + if (pfn < has->covered_start_pfn || pfn >= has->covered_end_pfn)
> return false;
>
> /* Check for gaps. */
> list_for_each_entry(gap, &has->gap_list, list) {
> - if ((pfn >= gap->start_pfn) && (pfn < gap->end_pfn))
> + if (pfn >= gap->start_pfn && pfn < gap->end_pfn)
> return false;
> }
>
> @@ -715,7 +701,7 @@ static void hv_bring_pgs_online(struct hv_hotadd_state *has,
> }
>
> static void hv_mem_hot_add(unsigned long start, unsigned long size,
> - unsigned long pfn_count,
> + unsigned long pfn_count,
> struct hv_hotadd_state *has)
why is this line not aligned?
> {
> int ret = 0;
> @@ -724,7 +710,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size,
> unsigned long processed_pfn;
> unsigned long total_pfn = pfn_count;
>
> - for (i = 0; i < (size/HA_CHUNK); i++) {
> + for (i = 0; i < (size / HA_CHUNK); i++) {
> start_pfn = start + (i * HA_CHUNK);
>
> scoped_guard(spinlock_irqsave, &dm_device.ha_lock) {
> @@ -745,7 +731,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size,
>
> nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn));
> ret = add_memory(nid, PFN_PHYS((start_pfn)),
> - (HA_CHUNK << PAGE_SHIFT), MHP_MERGE_RESOURCE);
> + (HA_CHUNK << PAGE_SHIFT), MHP_MERGE_RESOURCE);
>
> if (ret) {
> pr_err("hot_add memory failed error is %d\n", ret);
> @@ -787,8 +773,8 @@ static void hv_online_page(struct page *pg, unsigned int order)
> guard(spinlock_irqsave)(&dm_device.ha_lock);
> list_for_each_entry(has, &dm_device.ha_region_list, list) {
> /* The page belongs to a different HAS. */
> - if ((pfn < has->start_pfn) ||
> - (pfn + (1UL << order) > has->end_pfn))
> + if (pfn < has->start_pfn ||
> + (pfn + (1UL << order) > has->end_pfn))
> continue;
>
> hv_bring_pgs_online(has, pfn, 1UL << order);
> @@ -855,7 +841,7 @@ static int pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt)
> }
>
> static unsigned long handle_pg_range(unsigned long pg_start,
> - unsigned long pg_count)
> + unsigned long pg_count)
> {
> unsigned long start_pfn = pg_start;
> unsigned long pfn_cnt = pg_count;
> @@ -866,7 +852,7 @@ static unsigned long handle_pg_range(unsigned long pg_start,
> unsigned long res = 0, flags;
>
> pr_debug("Hot adding %lu pages starting at pfn 0x%lx.\n", pg_count,
> - pg_start);
> + pg_start);
>
> spin_lock_irqsave(&dm_device.ha_lock, flags);
> list_for_each_entry(has, &dm_device.ha_region_list, list) {
> @@ -902,10 +888,9 @@ static unsigned long handle_pg_range(unsigned long pg_start,
> if (start_pfn > has->start_pfn &&
> online_section_nr(pfn_to_section_nr(start_pfn)))
> hv_bring_pgs_online(has, start_pfn, pgs_ol);
> -
> }
>
> - if ((has->ha_end_pfn < has->end_pfn) && (pfn_cnt > 0)) {
> + if (has->ha_end_pfn < has->end_pfn && pfn_cnt > 0) {
> /*
> * We have some residual hot add range
> * that needs to be hot added; hot add
> @@ -938,7 +923,7 @@ static unsigned long handle_pg_range(unsigned long pg_start,
> }
>
> static unsigned long process_hot_add(unsigned long pg_start,
> - unsigned long pfn_cnt,
> + unsigned long pfn_cnt,
> unsigned long rg_start,
> unsigned long rg_size)
again, the above two lines are not aligned...
there are multiple such instances below.
> {
> @@ -1010,7 +995,7 @@ static void hot_add_req(struct work_struct *dummy)
> rg_start = dm->ha_wrk.ha_region_range.finfo.start_page;
> rg_sz = dm->ha_wrk.ha_region_range.finfo.page_cnt;
>
> - if ((rg_start == 0) && (!dm->host_specified_ha_region)) {
> + if (rg_start == 0 && !dm->host_specified_ha_region) {
> unsigned long region_size;
> unsigned long region_start;
>
> @@ -1033,7 +1018,7 @@ static void hot_add_req(struct work_struct *dummy)
>
> if (do_hot_add)
> resp.page_count = process_hot_add(pg_start, pfn_cnt,
> - rg_start, rg_sz);
> + rg_start, rg_sz);
>
> dm->num_pages_added += resp.page_count;
> #endif
> @@ -1070,7 +1055,7 @@ static void hot_add_req(struct work_struct *dummy)
> dm->state = DM_INITIALIZED;
> resp.hdr.trans_id = atomic_inc_return(&trans_id);
> vmbus_sendpacket(dm->dev->channel, &resp,
> - sizeof(struct dm_hot_add_response),
> + sizeof(struct dm_hot_add_response),
> (unsigned long)NULL,
> VM_PKT_DATA_INBAND, 0);
> }
> @@ -1208,14 +1193,13 @@ static void post_status(struct hv_dynmem_device *dm)
>
> last_post_time = jiffies;
> vmbus_sendpacket(dm->dev->channel, &status,
> - sizeof(struct dm_status),
> + sizeof(struct dm_status),
> (unsigned long)NULL,
> VM_PKT_DATA_INBAND, 0);
> -
> }
>
> static void free_balloon_pages(struct hv_dynmem_device *dm,
> - union dm_mem_page_range *range_array)
> + union dm_mem_page_range *range_array)
> {
> int num_pages = range_array->finfo.page_cnt;
> __u64 start_frame = range_array->finfo.start_page;
> @@ -1231,8 +1215,6 @@ static void free_balloon_pages(struct hv_dynmem_device *dm,
> }
> }
>
> -
> -
> static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
> unsigned int num_pages,
> struct dm_balloon_response *bl_resp,
> @@ -1278,7 +1260,6 @@ static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
> page_to_pfn(pg);
> bl_resp->range_array[i].finfo.page_cnt = alloc_unit;
> bl_resp->hdr.size += sizeof(union dm_mem_page_range);
> -
> }
>
> return i * alloc_unit;
> @@ -1332,7 +1313,7 @@ static void balloon_up(struct work_struct *dummy)
>
> if (num_ballooned == 0 || num_ballooned == num_pages) {
> pr_debug("Ballooned %u out of %u requested pages.\n",
> - num_pages, dm_device.balloon_wrk.num_pages);
> + num_pages, dm_device.balloon_wrk.num_pages);
>
> bl_resp->more_pages = 0;
> done = true;
> @@ -1348,7 +1329,7 @@ static void balloon_up(struct work_struct *dummy)
> do {
> bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);
> ret = vmbus_sendpacket(dm_device.dev->channel,
> - bl_resp,
> + bl_resp,
> bl_resp->hdr.size,
> (unsigned long)NULL,
> VM_PKT_DATA_INBAND, 0);
> @@ -1366,16 +1347,15 @@ static void balloon_up(struct work_struct *dummy)
>
> for (i = 0; i < bl_resp->range_count; i++)
> free_balloon_pages(&dm_device,
> - &bl_resp->range_array[i]);
> + &bl_resp->range_array[i]);
>
> done = true;
> }
> }
> -
> }
>
> static void balloon_down(struct hv_dynmem_device *dm,
> - struct dm_unballoon_request *req)
> + struct dm_unballoon_request *req)
> {
> union dm_mem_page_range *range_array = req->range_array;
> int range_count = req->range_count;
> @@ -1389,7 +1369,7 @@ static void balloon_down(struct hv_dynmem_device *dm,
> }
>
> pr_debug("Freed %u ballooned pages.\n",
> - prev_pages_ballooned - dm->num_pages_ballooned);
> + prev_pages_ballooned - dm->num_pages_ballooned);
>
> if (req->more_pages == 1)
> return;
> @@ -1400,7 +1380,7 @@ static void balloon_down(struct hv_dynmem_device *dm,
> resp.hdr.size = sizeof(struct dm_unballoon_response);
>
> vmbus_sendpacket(dm_device.dev->channel, &resp,
> - sizeof(struct dm_unballoon_response),
> + sizeof(struct dm_unballoon_response),
> (unsigned long)NULL,
> VM_PKT_DATA_INBAND, 0);
>
> @@ -1415,7 +1395,7 @@ static int dm_thread_func(void *dm_dev)
>
> while (!kthread_should_stop()) {
> wait_for_completion_interruptible_timeout(
> - &dm_device.config_event, 1*HZ);
> + &dm_device.config_event, 1 * HZ);
> /*
> * The host expects us to post information on the memory
> * pressure every second.
> @@ -1439,9 +1419,8 @@ static int dm_thread_func(void *dm_dev)
> return 0;
> }
>
> -
> static void version_resp(struct hv_dynmem_device *dm,
> - struct dm_version_response *vresp)
> + struct dm_version_response *vresp)
> {
> struct dm_version_request version_req;
> int ret;
> @@ -1487,7 +1466,7 @@ static void version_resp(struct hv_dynmem_device *dm,
> }
>
> ret = vmbus_sendpacket(dm->dev->channel, &version_req,
> - sizeof(struct dm_version_request),
> + sizeof(struct dm_version_request),
> (unsigned long)NULL,
> VM_PKT_DATA_INBAND, 0);
>
> @@ -1502,7 +1481,7 @@ static void version_resp(struct hv_dynmem_device *dm,
> }
>
> static void cap_resp(struct hv_dynmem_device *dm,
> - struct dm_capabilities_resp_msg *cap_resp)
> + struct dm_capabilities_resp_msg *cap_resp)
> {
> if (!cap_resp->is_accepted) {
> pr_err("Capabilities not accepted by host\n");
> @@ -1535,7 +1514,7 @@ static void balloon_onchannelcallback(void *context)
> switch (dm_hdr->type) {
> case DM_VERSION_RESPONSE:
> version_resp(dm,
> - (struct dm_version_response *)dm_msg);
> + (struct dm_version_response *)dm_msg);
> break;
>
> case DM_CAPABILITIES_RESPONSE:
> @@ -1565,7 +1544,7 @@ static void balloon_onchannelcallback(void *context)
>
> dm->state = DM_BALLOON_DOWN;
> balloon_down(dm,
> - (struct dm_unballoon_request *)recv_buffer);
> + (struct dm_unballoon_request *)recv_buffer);
> break;
>
> case DM_MEM_HOT_ADD_REQUEST:
> @@ -1603,17 +1582,15 @@ static void balloon_onchannelcallback(void *context)
>
> default:
> pr_warn_ratelimited("Unhandled message: type: %d\n", dm_hdr->type);
> -
> }
> }
> -
> }
>
> #define HV_LARGE_REPORTING_ORDER 9
> #define HV_LARGE_REPORTING_LEN (HV_HYP_PAGE_SIZE << \
> HV_LARGE_REPORTING_ORDER)
> static int hv_free_page_report(struct page_reporting_dev_info *pr_dev_info,
> - struct scatterlist *sgl, unsigned int nents)
> + struct scatterlist *sgl, unsigned int nents)
> {
> unsigned long flags;
> struct hv_memory_hint *hint;
> @@ -1648,7 +1625,7 @@ static int hv_free_page_report(struct page_reporting_dev_info *pr_dev_info,
> */
>
> /* page reporting for pages 2MB or higher */
> - if (order >= HV_LARGE_REPORTING_ORDER ) {
> + if (order >= HV_LARGE_REPORTING_ORDER) {
> range->page.largepage = 1;
> range->page_size = HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB;
> range->base_large_pfn = page_to_hvpfn(
> @@ -1662,23 +1639,21 @@ static int hv_free_page_report(struct page_reporting_dev_info *pr_dev_info,
> range->page.additional_pages =
> (sg->length / HV_HYP_PAGE_SIZE) - 1;
> }
> -
> }
>
> status = hv_do_rep_hypercall(HV_EXT_CALL_MEMORY_HEAT_HINT, nents, 0,
> hint, NULL);
> local_irq_restore(flags);
> if (!hv_result_success(status)) {
> -
> pr_err("Cold memory discard hypercall failed with status %llx\n",
> - status);
> + status);
> if (hv_hypercall_multi_failure > 0)
> hv_hypercall_multi_failure++;
>
> if (hv_result(status) == HV_STATUS_INVALID_PARAMETER) {
> pr_err("Underlying Hyper-V does not support order less than 9. Hypercall failed\n");
> pr_err("Defaulting to page_reporting_order %d\n",
> - pageblock_order);
> + pageblock_order);
> page_reporting_order = pageblock_order;
> hv_hypercall_multi_failure++;
> return -EINVAL;
> @@ -1712,7 +1687,7 @@ static void enable_page_reporting(void)
> pr_err("Failed to enable cold memory discard: %d\n", ret);
> } else {
> pr_info("Cold memory discard hint enabled with order %d\n",
> - page_reporting_order);
> + page_reporting_order);
> }
> }
>
> @@ -1795,7 +1770,7 @@ static int balloon_connect_vsp(struct hv_device *dev)
> if (ret)
> goto out;
>
> - t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
> + t = wait_for_completion_timeout(&dm_device.host_event, 5 * HZ);
> if (t == 0) {
> ret = -ETIMEDOUT;
> goto out;
> @@ -1850,7 +1825,7 @@ static int balloon_connect_vsp(struct hv_device *dev)
> if (ret)
> goto out;
>
> - t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
> + t = wait_for_completion_timeout(&dm_device.host_event, 5 * HZ);
> if (t == 0) {
> ret = -ETIMEDOUT;
> goto out;
> @@ -1891,7 +1866,7 @@ static int hv_balloon_debug_show(struct seq_file *f, void *offset)
> char *sname;
>
> seq_printf(f, "%-22s: %u.%u\n", "host_version",
> - DYNMEM_MAJOR_VERSION(dm->version),
> + DYNMEM_MAJOR_VERSION(dm->version),
> DYNMEM_MINOR_VERSION(dm->version));
>
> seq_printf(f, "%-22s:", "capabilities");
> @@ -1941,10 +1916,10 @@ static int hv_balloon_debug_show(struct seq_file *f, void *offset)
> seq_printf(f, "%-22s: %u\n", "pages_ballooned", dm->num_pages_ballooned);
>
> seq_printf(f, "%-22s: %lu\n", "total_pages_committed",
> - get_pages_committed(dm));
> + get_pages_committed(dm));
>
> seq_printf(f, "%-22s: %llu\n", "max_dynamic_page_count",
> - dm->max_dynamic_page_count);
> + dm->max_dynamic_page_count);
>
> return 0;
> }
> @@ -1954,7 +1929,7 @@ DEFINE_SHOW_ATTRIBUTE(hv_balloon_debug);
> static void hv_balloon_debugfs_init(struct hv_dynmem_device *b)
> {
> debugfs_create_file("hv-balloon", 0444, NULL, b,
> - &hv_balloon_debug_fops);
> + &hv_balloon_debug_fops);
> }
>
> static void hv_balloon_debugfs_exit(struct hv_dynmem_device *b)
> @@ -2097,7 +2072,6 @@ static int balloon_suspend(struct hv_device *hv_dev)
> tasklet_enable(&hv_dev->channel->callback_event);
>
> return 0;
> -
> }
>
> static int balloon_resume(struct hv_device *dev)
> @@ -2156,7 +2130,6 @@ static struct hv_driver balloon_drv = {
>
> static int __init init_balloon_drv(void)
> {
> -
> return vmbus_driver_register(&balloon_drv);
> }
>
> --
> 2.34.1
>
>
In general, checkpatch suggestions shouldn't be applied blindly as
seems to have been done here.
According to Documentation/dev-tools/checkpatch.rst:
"Checkpatch is not always right. Your judgement takes precedence over checkpatch
messages. If your code looks better with the violations, then its probably
best left alone."
Anirudh.