[PATCH v3 3/8] Staging: kpc2000: kpc_dma: Resolve checkpatch space errors around brace '{','!' and open paranthesis '('.

From: Vandana BN
Date: Mon May 13 2019 - 06:28:40 EST

This patch resolves below errors reported by checkpath
ERROR: space required before the open brace '{'
ERROR: space prohibited after that '!' (ctx:BxW)
ERROR: space prohibited after that open parenthesis '('
---
v2 - split changes to multiple patches
v3 - edit commit message
---

Signed-off-by: Vandana BN <bnvandana@xxxxxxxxx>
---
drivers/staging/kpc2000/kpc_dma/dma.c | 28 +++++-----
drivers/staging/kpc2000/kpc_dma/fileops.c | 56 +++++++++----------
.../staging/kpc2000/kpc_dma/kpc_dma_driver.c | 20 +++----
3 files changed, 52 insertions(+), 52 deletions(-)

diff --git a/drivers/staging/kpc2000/kpc_dma/dma.c b/drivers/staging/kpc2000/kpc_dma/dma.c
index 488b9b81debc..2053316009bc 100644
--- a/drivers/staging/kpc2000/kpc_dma/dma.c
+++ b/drivers/staging/kpc2000/kpc_dma/dma.c
@@ -41,7 +41,7 @@ void ndd_irq_worker(struct work_struct *ws)
dev_dbg(&eng->pldev->dev, "Handling completed descriptor %p (acd = %p)\n", cur, cur->acd);
BUG_ON(cur == eng->desc_next); // Ordering failure.

- if (cur->DescControlFlags & DMA_DESC_CTL_SOP){
+ if (cur->DescControlFlags & DMA_DESC_CTL_SOP) {
eng->accumulated_bytes = 0;
eng->accumulated_flags = 0;
}
@@ -53,7 +53,7 @@ void ndd_irq_worker(struct work_struct *ws)
if (cur->DescStatusFlags & DMA_DESC_STS_SHORT)
eng->accumulated_flags |= ACD_FLAG_ENG_ACCUM_SHORT;

- if (cur->DescControlFlags & DMA_DESC_CTL_EOP){
+ if (cur->DescControlFlags & DMA_DESC_CTL_EOP) {
if (cur->acd)
transfer_complete_cb(cur->acd, eng->accumulated_bytes, eng->accumulated_flags | ACD_FLAG_DONE);
}
@@ -98,7 +98,7 @@ int setup_dma_engine(struct kpc_dma_device *eng, u32 desc_cnt)
if (WARN(!(caps & ENG_CAP_PRESENT), "setup_dma_engine() called for DMA Engine at %p which isn't present in hardware!\n", eng))
return -ENXIO;

- if (caps & ENG_CAP_DIRECTION){
+ if (caps & ENG_CAP_DIRECTION) {
eng->dir = DMA_FROM_DEVICE;
} else {
eng->dir = DMA_TO_DEVICE;
@@ -108,7 +108,7 @@ int setup_dma_engine(struct kpc_dma_device *eng, u32 desc_cnt)
eng->desc_pool = dma_pool_create("KPC DMA Descriptors", &eng->pldev->dev, sizeof(struct kpc_dma_descriptor), DMA_DESC_ALIGNMENT, 4096);

eng->desc_pool_first = dma_pool_alloc(eng->desc_pool, GFP_KERNEL | GFP_DMA, &head_handle);
- if (!eng->desc_pool_first){
+ if (!eng->desc_pool_first) {
dev_err(&eng->pldev->dev, "setup_dma_engine: couldn't allocate desc_pool_first!\n");
dma_pool_destroy(eng->desc_pool);
return -ENOMEM;
@@ -118,7 +118,7 @@ int setup_dma_engine(struct kpc_dma_device *eng, u32 desc_cnt)
clear_desc(eng->desc_pool_first);

cur = eng->desc_pool_first;
- for (i = 1 ; i < eng->desc_pool_cnt ; i++){
+ for (i = 1 ; i < eng->desc_pool_cnt ; i++) {
next = dma_pool_alloc(eng->desc_pool, GFP_KERNEL | GFP_DMA, &next_handle);
if (next == NULL)
goto done_alloc;
@@ -144,7 +144,7 @@ int setup_dma_engine(struct kpc_dma_device *eng, u32 desc_cnt)

// Grab IRQ line
rv = request_irq(eng->irq, ndd_irq_handler, IRQF_SHARED, KP_DRIVER_NAME_DMA_CONTROLLER, eng);
- if (rv){
+ if (rv) {
dev_err(&eng->pldev->dev, "setup_dma_engine: failed to request_irq: %d\n", rv);
return rv;
}
@@ -166,8 +166,8 @@ void stop_dma_engine(struct kpc_dma_device *eng)

// Wait for descriptor engine to finish current operaion
timeout = jiffies + (HZ / 2);
- while (GetEngineControl(eng) & ENG_CTL_DMA_RUNNING){
- if (time_after(jiffies, timeout)){
+ while (GetEngineControl(eng) & ENG_CTL_DMA_RUNNING) {
+ if (time_after(jiffies, timeout)) {
dev_crit(&eng->pldev->dev, "DMA_RUNNING still asserted!\n");
break;
}
@@ -178,8 +178,8 @@ void stop_dma_engine(struct kpc_dma_device *eng)

// Wait for reset request to be processed
timeout = jiffies + (HZ / 2);
- while (GetEngineControl(eng) & (ENG_CTL_DMA_RUNNING | ENG_CTL_DMA_RESET_REQUEST)){
- if (time_after(jiffies, timeout)){
+ while (GetEngineControl(eng) & (ENG_CTL_DMA_RUNNING | ENG_CTL_DMA_RESET_REQUEST)) {
+ if (time_after(jiffies, timeout)) {
dev_crit(&eng->pldev->dev, "ENG_CTL_DMA_RESET_REQUEST still asserted!\n");
break;
}
@@ -190,8 +190,8 @@ void stop_dma_engine(struct kpc_dma_device *eng)

// And wait for reset to complete
timeout = jiffies + (HZ / 2);
- while (GetEngineControl(eng) & ENG_CTL_DMA_RESET){
- if (time_after(jiffies, timeout)){
+ while (GetEngineControl(eng) & ENG_CTL_DMA_RESET) {
+ if (time_after(jiffies, timeout)) {
dev_crit(&eng->pldev->dev, "DMA_RESET still asserted!\n");
break;
}
@@ -217,7 +217,7 @@ void destroy_dma_engine(struct kpc_dma_device *eng)
cur = eng->desc_pool_first;
cur_handle = eng->desc_pool_first->MyDMAAddr;

- for (i = 0 ; i < eng->desc_pool_cnt ; i++){
+ for (i = 0 ; i < eng->desc_pool_cnt ; i++) {
struct kpc_dma_descriptor *next = cur->Next;
dma_addr_t next_handle = cur->DescNextDescPtr;
dma_pool_free(eng->desc_pool, cur, cur_handle);
@@ -237,7 +237,7 @@ int count_descriptors_available(struct kpc_dma_device *eng)
{
u32 count = 0;
struct kpc_dma_descriptor *cur = eng->desc_next;
- while (cur != eng->desc_completed){
+ while (cur != eng->desc_completed) {
BUG_ON(cur == NULL);
count++;
cur = cur->Next;
diff --git a/drivers/staging/kpc2000/kpc_dma/fileops.c b/drivers/staging/kpc2000/kpc_dma/fileops.c
index 61927b313a26..8dd948ef455f 100644
--- a/drivers/staging/kpc2000/kpc_dma/fileops.c
+++ b/drivers/staging/kpc2000/kpc_dma/fileops.c
@@ -58,7 +58,7 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
dev_dbg(&priv->ldev->pldev->dev, "kpc_dma_transfer(priv = [%p], kcb = [%p], iov_base = [%p], iov_len = %ld) ldev = [%p]\n", priv, kcb, (void *)iov_base, iov_len, ldev);

acd = (struct aio_cb_data *) kzalloc(sizeof(struct aio_cb_data), GFP_KERNEL);
- if (!acd){
+ if (!acd) {
dev_err(&priv->ldev->pldev->dev, "Couldn't kmalloc space for for the aio data\n");
return -ENOMEM;
}
@@ -74,7 +74,7 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned

// Allocate an array of page pointers
acd->user_pages = kzalloc(sizeof(struct page *) * acd->page_count, GFP_KERNEL);
- if (!acd->user_pages){
+ if (!acd->user_pages) {
dev_err(&priv->ldev->pldev->dev, "Couldn't kmalloc space for for the page pointers\n");
rv = -ENOMEM;
goto err_alloc_userpages;
@@ -84,27 +84,27 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
down_read(&current->mm->mmap_sem); /* get memory map semaphore */
rv = get_user_pages(iov_base, acd->page_count, FOLL_TOUCH | FOLL_WRITE | FOLL_GET, acd->user_pages, NULL);
up_read(&current->mm->mmap_sem); /* release the semaphore */
- if (rv != acd->page_count){
+ if (rv != acd->page_count) {
dev_err(&priv->ldev->pldev->dev, "Couldn't get_user_pages (%ld)\n", rv);
goto err_get_user_pages;
}

// Allocate and setup the sg_table (scatterlist entries)
rv = sg_alloc_table_from_pages(&acd->sgt, acd->user_pages, acd->page_count, iov_base & (PAGE_SIZE-1), iov_len, GFP_KERNEL);
- if (rv){
+ if (rv) {
dev_err(&priv->ldev->pldev->dev, "Couldn't alloc sg_table (%ld)\n", rv);
goto err_alloc_sg_table;
}

// Setup the DMA mapping for all the sg entries
acd->mapped_entry_count = dma_map_sg(&ldev->pldev->dev, acd->sgt.sgl, acd->sgt.nents, ldev->dir);
- if (acd->mapped_entry_count <= 0){
+ if (acd->mapped_entry_count <= 0) {
dev_err(&priv->ldev->pldev->dev, "Couldn't dma_map_sg (%d)\n", acd->mapped_entry_count);
goto err_dma_map_sg;
}

// Calculate how many descriptors are actually needed for this transfer.
- for_each_sg(acd->sgt.sgl, sg, acd->mapped_entry_count, i){
+ for_each_sg(acd->sgt.sgl, sg, acd->mapped_entry_count, i) {
desc_needed += count_parts_for_sge(sg);
}

@@ -113,13 +113,13 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
// Figoure out how many descriptors are available and return an error if there aren't enough
num_descrs_avail = count_descriptors_available(ldev);
dev_dbg(&priv->ldev->pldev->dev, " mapped_entry_count = %d num_descrs_needed = %d num_descrs_avail = %d\n", acd->mapped_entry_count, desc_needed, num_descrs_avail);
- if (desc_needed >= ldev->desc_pool_cnt){
+ if (desc_needed >= ldev->desc_pool_cnt) {
dev_warn(&priv->ldev->pldev->dev, " mapped_entry_count = %d num_descrs_needed = %d num_descrs_avail = %d TOO MANY to ever complete!\n", acd->mapped_entry_count, desc_needed, num_descrs_avail);
rv = -EAGAIN;
unlock_engine(ldev);
goto err_descr_too_many;
}
- if (desc_needed > num_descrs_avail){
+ if (desc_needed > num_descrs_avail) {
dev_warn(&priv->ldev->pldev->dev, " mapped_entry_count = %d num_descrs_needed = %d num_descrs_avail = %d Too many to complete right now.\n", acd->mapped_entry_count, desc_needed, num_descrs_avail);
rv = -EMSGSIZE;
unlock_engine(ldev);
@@ -129,13 +129,13 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
// Loop through all the sg table entries and fill out a descriptor for each one.
desc = ldev->desc_next;
card_addr = acd->priv->card_addr;
- for_each_sg(acd->sgt.sgl, sg, acd->mapped_entry_count, i){
+ for_each_sg(acd->sgt.sgl, sg, acd->mapped_entry_count, i) {
pcnt = count_parts_for_sge(sg);
- for (p = 0 ; p < pcnt ; p++){
+ for (p = 0 ; p < pcnt ; p++) {
// Fill out the descriptor
BUG_ON(desc == NULL);
clear_desc(desc);
- if (p != pcnt-1){
+ if (p != pcnt-1) {
desc->DescByteCount = 0x80000;
} else {
desc->DescByteCount = sg_dma_len(sg) - (p * 0x80000);
@@ -157,7 +157,7 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
desc->DescSystemAddrMS = (dma_addr & 0xFFFFFFFF00000000) >> 32;

user_ctl = acd->priv->user_ctl;
- if (i == acd->mapped_entry_count-1 && p == pcnt-1){
+ if (i == acd->mapped_entry_count-1 && p == pcnt-1) {
user_ctl = acd->priv->user_ctl_last;
}
desc->DescUserControlLS = (user_ctl & 0x00000000FFFFFFFF) >> 0;
@@ -179,13 +179,13 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
unlock_engine(ldev);

// If this is a synchronous kiocb, we need to put the calling process to sleep until the transfer is complete
- if (kcb == NULL || is_sync_kiocb(kcb)){
+ if (kcb == NULL || is_sync_kiocb(kcb)) {
rv = wait_for_completion_interruptible(&done);
// If the user aborted (rv == -ERESTARTSYS), we're no longer responsible for cleaning up the acd
- if (rv == -ERESTARTSYS){
+ if (rv == -ERESTARTSYS) {
acd->cpl = NULL;
}
- if (rv == 0){
+ if (rv == 0) {
rv = acd->len;
kfree(acd);
}
@@ -200,7 +200,7 @@ int kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
sg_free_table(&acd->sgt);
err_dma_map_sg:
err_alloc_sg_table:
- for (i = 0 ; i < acd->page_count ; i++){
+ for (i = 0 ; i < acd->page_count ; i++) {
put_page(acd->user_pages[i]);
}
err_get_user_pages:
@@ -223,15 +223,15 @@ void transfer_complete_cb(struct aio_cb_data *acd, size_t xfr_count, u32 flags)

dev_dbg(&acd->ldev->pldev->dev, "transfer_complete_cb(acd = [%p])\n", acd);

- for (i = 0 ; i < acd->page_count ; i++){
- if (!PageReserved(acd->user_pages[i])){
+ for (i = 0 ; i < acd->page_count ; i++) {
+ if (!PageReserved(acd->user_pages[i])) {
set_page_dirty(acd->user_pages[i]);
}
}

dma_unmap_sg(&acd->ldev->pldev->dev, acd->sgt.sgl, acd->sgt.nents, acd->ldev->dir);

- for (i = 0 ; i < acd->page_count ; i++){
+ for (i = 0 ; i < acd->page_count ; i++) {
put_page(acd->user_pages[i]);
}

@@ -241,8 +241,8 @@ void transfer_complete_cb(struct aio_cb_data *acd, size_t xfr_count, u32 flags)

acd->flags = flags;

- if (acd->kcb == NULL || is_sync_kiocb(acd->kcb)){
- if (acd->cpl){
+ if (acd->kcb == NULL || is_sync_kiocb(acd->kcb)) {
+ if (acd->cpl) {
complete(acd->cpl);
} else {
// There's no completion, so we're responsible for cleaning up the acd
@@ -265,7 +265,7 @@ int kpc_dma_open(struct inode *inode, struct file *filp)
if (ldev == NULL)
return -ENODEV;

- if (! atomic_dec_and_test(&ldev->open_count)){
+ if (!atomic_dec_and_test(&ldev->open_count)) {
atomic_inc(&ldev->open_count);
return -EBUSY; /* already open */
}
@@ -294,9 +294,9 @@ int kpc_dma_close(struct inode *inode, struct file *filp)
stop_dma_engine(eng);

cur = eng->desc_completed->Next;
- while (cur != eng->desc_next){
+ while (cur != eng->desc_next) {
dev_dbg(&eng->pldev->dev, "Aborting descriptor %p (acd = %p)\n", cur, cur->acd);
- if (cur->DescControlFlags & DMA_DESC_CTL_EOP){
+ if (cur->DescControlFlags & DMA_DESC_CTL_EOP) {
if (cur->acd)
transfer_complete_cb(cur->acd, 0, ACD_FLAG_ABORT);
}
@@ -334,7 +334,7 @@ ssize_t kpc_dma_aio_read(struct kiocb *kcb, const struct iovec *iov, unsigned
if (priv->ldev->dir != DMA_FROM_DEVICE)
return -EMEDIUMTYPE;

- if (iov_count != 1){
+ if (iov_count != 1) {
dev_err(&priv->ldev->pldev->dev, "kpc_dma_aio_read() called with iov_count > 1!\n");
return -EFAULT;
}
@@ -353,7 +353,7 @@ ssize_t kpc_dma_aio_write(struct kiocb *kcb, const struct iovec *iov, unsigned
if (priv->ldev->dir != DMA_TO_DEVICE)
return -EMEDIUMTYPE;

- if (iov_count != 1){
+ if (iov_count != 1) {
dev_err(&priv->ldev->pldev->dev, "kpc_dma_aio_write() called with iov_count > 1!\n");
return -EFAULT;
}
@@ -365,7 +365,7 @@ ssize_t kpc_dma_aio_write(struct kiocb *kcb, const struct iovec *iov, unsigned
#endif

static
-ssize_t kpc_dma_read( struct file *filp, char __user *user_buf, size_t count, loff_t *ppos)
+ssize_t kpc_dma_read(struct file *filp, char __user *user_buf, size_t count, loff_t *ppos)
{
struct dev_private_data *priv = (struct dev_private_data *)filp->private_data;
dev_dbg(&priv->ldev->pldev->dev, "kpc_dma_read(filp = [%p], user_buf = [%p], count = %zu, ppos = [%p]) priv = [%p], ldev = [%p]\n", filp, user_buf, count, ppos, priv, priv->ldev);
@@ -394,7 +394,7 @@ long kpc_dma_ioctl(struct file *filp, unsigned int ioctl_num, unsigned long ioc
struct dev_private_data *priv = (struct dev_private_data *)filp->private_data;
dev_dbg(&priv->ldev->pldev->dev, "kpc_dma_ioctl(filp = [%p], ioctl_num = 0x%x, ioctl_param = 0x%lx) priv = [%p], ldev = [%p]\n", filp, ioctl_num, ioctl_param, priv, priv->ldev);

- switch (ioctl_num){
+ switch (ioctl_num) {
case KND_IOCTL_SET_CARD_ADDR: priv->card_addr = ioctl_param; return priv->card_addr;
case KND_IOCTL_SET_USER_CTL: priv->user_ctl = ioctl_param; return priv->user_ctl;
case KND_IOCTL_SET_USER_CTL_LAST: priv->user_ctl_last = ioctl_param; return priv->user_ctl_last;
diff --git a/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c b/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c
index 004d91b5ad00..0b8dcf046136 100644
--- a/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c
+++ b/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c
@@ -97,7 +97,7 @@ int kpc_dma_probe(struct platform_device *pldev)
dev_t dev;

struct kpc_dma_device *ldev = kzalloc(sizeof(struct kpc_dma_device), GFP_KERNEL);
- if (!ldev){
+ if (!ldev) {
dev_err(&pldev->dev, "kpc_dma_probe: unable to kzalloc space for kpc_dma_device\n");
rv = -ENOMEM;
goto err_rv;
@@ -116,20 +116,20 @@ int kpc_dma_probe(struct platform_device *pldev)

// Get Engine regs resource
r = platform_get_resource(pldev, IORESOURCE_MEM, 0);
- if (!r){
+ if (!r) {
dev_err(&ldev->pldev->dev, "kpc_dma_probe: didn't get the engine regs resource!\n");
rv = -ENXIO;
goto err_kfree;
}
ldev->eng_regs = ioremap_nocache(r->start, resource_size(r));
- if (!ldev->eng_regs){
+ if (!ldev->eng_regs) {
dev_err(&ldev->pldev->dev, "kpc_dma_probe: failed to ioremap engine regs!\n");
rv = -ENXIO;
goto err_kfree;
}

r = platform_get_resource(pldev, IORESOURCE_IRQ, 0);
- if (!r){
+ if (!r) {
dev_err(&ldev->pldev->dev, "kpc_dma_probe: didn't get the IRQ resource!\n");
rv = -ENXIO;
goto err_kfree;
@@ -139,21 +139,21 @@ int kpc_dma_probe(struct platform_device *pldev)
// Setup miscdev struct
dev = MKDEV(assigned_major_num, pldev->id);
ldev->kpc_dma_dev = device_create(kpc_dma_class, &pldev->dev, dev, ldev, "kpc_dma%d", pldev->id);
- if (IS_ERR(ldev->kpc_dma_dev)){
+ if (IS_ERR(ldev->kpc_dma_dev)) {
dev_err(&ldev->pldev->dev, "kpc_dma_probe: device_create failed: %d\n", rv);
goto err_kfree;
}

// Setup the DMA engine
rv = setup_dma_engine(ldev, 30);
- if (rv){
+ if (rv) {
dev_err(&ldev->pldev->dev, "kpc_dma_probe: failed to setup_dma_engine: %d\n", rv);
goto err_misc_dereg;
}

// Setup the sysfs files
rv = sysfs_create_files(&(ldev->pldev->dev.kobj), ndd_attr_list);
- if (rv){
+ if (rv) {
dev_err(&ldev->pldev->dev, "kpc_dma_probe: Failed to add sysfs files: %d\n", rv);
goto err_destroy_eng;
}
@@ -208,7 +208,7 @@ int __init kpc_dma_driver_init(void)
int err;

err = __register_chrdev(KPC_DMA_CHAR_MAJOR, 0, KPC_DMA_NUM_MINORS, "kpc_dma", &kpc_dma_fops);
- if (err < 0){
+ if (err < 0) {
pr_err("Can't allocate a major number (%d) for kpc_dma (err = %d)\n", KPC_DMA_CHAR_MAJOR, err);
goto fail_chrdev_register;
}
@@ -216,13 +216,13 @@ int __init kpc_dma_driver_init(void)

kpc_dma_class = class_create(THIS_MODULE, "kpc_dma");
err = PTR_ERR(kpc_dma_class);
- if (IS_ERR(kpc_dma_class)){
+ if (IS_ERR(kpc_dma_class)) {
pr_err("Can't create class kpc_dma (err = %d)\n", err);
goto fail_class_create;
}

err = platform_driver_register(&kpc_dma_plat_driver_i);
- if (err){
+ if (err) {
pr_err("Can't register platform driver for kpc_dma (err = %d)\n", err);
goto fail_platdriver_register;
}
--
2.17.1