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path: root/drivers/staging/kpc2000/kpc_dma/fileops.c
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Diffstat (limited to 'drivers/staging/kpc2000/kpc_dma/fileops.c')
-rw-r--r--drivers/staging/kpc2000/kpc_dma/fileops.c56
1 files changed, 28 insertions, 28 deletions
diff --git a/drivers/staging/kpc2000/kpc_dma/fileops.c b/drivers/staging/kpc2000/kpc_dma/fileops.c
index d9a4369da405..3e3f45447edd 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 = kzalloc(sizeof(*acd), 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;