| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1276497255-2186-1-git-send-email-henuxd@gmail.com>
Date: Mon, 14 Jun 2010 09:34:15 +0300
From: Henri Häkkinen <henuxd@...il.com>
To: gregkh@...e.de, mithlesh@...syssoft.com, wfp5p@...ginia.edu,
reodge@...il.com, andrea.gelmini@...ma.net, henuxd@...il.com
Cc: devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging:comedi: Fixed coding convention issues.
Cleaned up and fixed coding convention issues as reporteed by
checkpatch.pl tool on the file `drivers.c'. Added logging macros
to `comedidev.h'. Replaced "BUG:" printk functions calls with
BUG_ON macro.
Signed-off-by: Henri Häkkinen <henuxd@...il.com>
---
drivers/staging/comedi/comedidev.h | 54 +++++++++++++++-
drivers/staging/comedi/drivers.c | 118 +++++++++++++++--------------------
2 files changed, 102 insertions(+), 70 deletions(-)
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index 4eb2b77..5c78564 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -43,11 +43,59 @@
#include "comedi.h"
-#define DPRINTK(format, args...) do { \
- if (comedi_debug) \
- printk(KERN_DEBUG "comedi: " format , ## args); \
+#define comedi_printk(level, fmt, args...) \
+ printk(level "comedi: " pr_fmt(fmt), ##args)
+
+#define DPRINTK(format, args...) \
+do { \
+ if (comedi_debug) \
+ comedi_printk(KERN_DEBUG, fmt, ##args); \
} while (0)
+#define comedi_emerg(fmt, ...) \
+ comedi_printk(KERN_EMERG, fmt, ##__VA_ARGS__)
+#define comedi_alert(fmt, ...) \
+ comedi_printk(KERN_ALERT, fmt, ##__VA_ARGS__)
+#define comedi_crit(fmt, ...) \
+ comedi_printk(KERN_CRIT, fmt, ##__VA_ARGS__)
+#define comedi_err(fmt, ...) \
+ comedi_printk(KERN_ERR, fmt, ##__VA_ARGS__)
+#define comedi_warn(fmt, ...) \
+ comedi_printk(KERN_WARN, fmt, ##__VA_ARGS__)
+#define comedi_notice(fmt, ...) \
+ comedi_printk(KERN_NOTICE, fmt, ##__VA_ARGS__)
+#define comedi_info(fmt, ...) \
+ comedi_printk(KERN_INFO, fmt, ##__VA_ARGS__)
+
+/* comedi_devel() should produce zero code unless DEBUG is defined */
+#ifdef DEBUG
+#define comedi_devel(fmt, ...) \
+ comedi_printk(KERN_DEBUG, fmt, ##__VA_ARGS__)
+#else
+#define comedi_devel(fmt, ...) \
+({ \
+ if (0) \
+ comedi_printk(KERN_DEBUG, fmt, ##__VA_ARGS_); \
+ 0; \
+})
+#endif
+
+#if defined(DEBUG)
+#define comedi_debug(fmt, ..) \
+ comedi_printk(KERN_DEBUG, fmt, ##__VA_ARGS__)
+#elif defined(CONFIG_DYNAMIC_DEBUG)
+/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
+#define comedi_debug(fmt, ...) \
+ dynamic_pr_debug(fmt, ##__VA_ARGS__)
+#else
+#define comedi_debug(fmt, ...) \
+({ \
+ if (0) \
+ comedi_printk(KERN_DEBUG, fmt, ##__VA_ARGS__); \
+ 0; \
+})
+#endif
+
#define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \
COMEDI_MINORVERSION, COMEDI_MICROVERSION)
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index 4a29ed7..410e83e 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -92,11 +92,8 @@ static void cleanup_device(struct comedi_device *dev)
static void __comedi_device_detach(struct comedi_device *dev)
{
dev->attached = 0;
- if (dev->driver)
- dev->driver->detach(dev);
- else
- printk(KERN_WARNING
- "BUG: dev->driver=NULL in comedi_device_detach()\n");
+ BUG_ON(!dev->driver);
+ dev->driver->detach(dev);
cleanup_device(dev);
}
@@ -117,8 +114,7 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
for (driv = comedi_drivers; driv; driv = driv->next) {
if (!try_module_get(driv->module)) {
- printk
- (KERN_INFO "comedi: failed to increment module count, skipping\n");
+ comedi_info("failed to increment module count, skipping\n");
continue;
}
if (driv->num_names) {
@@ -149,8 +145,7 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
/* report valid board names before returning error */
for (driv = comedi_drivers; driv; driv = driv->next) {
if (!try_module_get(driv->module)) {
- printk(KERN_INFO
- "comedi: failed to increment module count\n");
+ comedi_info("failed to increment module count\n");
continue;
}
comedi_report_boards(driv);
@@ -167,11 +162,7 @@ attached:
return ret;
}
- if (!dev->board_name) {
- printk(KERN_WARNING "BUG: dev->board_name=<%p>\n",
- dev->board_name);
- dev->board_name = "BUG";
- }
+ BUG_ON(!dev->board_name);
smp_wmb();
dev->attached = 1;
@@ -204,10 +195,7 @@ int comedi_driver_unregister(struct comedi_driver *driver)
mutex_lock(&dev->mutex);
if (dev->attached && dev->driver == driver) {
- if (dev->use_count)
- printk
- (KERN_WARNING "BUG! detaching device with use_count=%d\n",
- dev->use_count);
+ BUG_ON(dev->use_count);
comedi_device_detach(dev);
}
mutex_unlock(&dev->mutex);
@@ -252,8 +240,7 @@ static int postconfig(struct comedi_device *dev)
async =
kzalloc(sizeof(struct comedi_async), GFP_KERNEL);
if (async == NULL) {
- printk(KERN_INFO
- "failed to allocate async struct\n");
+ comedi_info("failed to allocate async struct\n");
return -ENOMEM;
}
init_waitqueue_head(&async->wait_head);
@@ -268,7 +255,7 @@ static int postconfig(struct comedi_device *dev)
async->prealloc_buf = NULL;
async->prealloc_bufsz = 0;
if (comedi_buf_alloc(dev, s, DEFAULT_BUF_SIZE) < 0) {
- printk(KERN_INFO "Buffer allocation failed\n");
+ comedi_info("Buffer allocation failed\n");
return -ENOMEM;
}
if (s->buf_change) {
@@ -325,17 +312,17 @@ static void comedi_report_boards(struct comedi_driver *driv)
unsigned int i;
const char *const *name_ptr;
- printk(KERN_INFO "comedi: valid board names for %s driver are:\n",
- driv->driver_name);
+ comedi_info("valid board names for %s driver are:\n",
+ driv->driver_name);
name_ptr = driv->board_name;
for (i = 0; i < driv->num_names; i++) {
- printk(KERN_INFO " %s\n", *name_ptr);
+ comedi_info("%s\n", *name_ptr);
name_ptr = (const char **)((char *)name_ptr + driv->offset);
}
if (driv->num_names == 0)
- printk(KERN_INFO " %s\n", driv->driver_name);
+ comedi_info(" %s\n", driv->driver_name);
}
static int poll_invalid(struct comedi_device *dev, struct comedi_subdevice *s)
@@ -441,21 +428,19 @@ int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
if (async->buf_page_list) {
unsigned i;
for (i = 0; i < async->n_buf_pages; ++i) {
- if (async->buf_page_list[i].virt_addr) {
- clear_bit(PG_reserved, &(virt_to_page(async->buf_page_list[i].virt_addr)->flags));
+ void *virt_addr = async->buf_page_list[i].virt_addr;
+ dma_addr_t dma_addr = async->buf_page_list[i].dma_addr;
+
+ if (virt_addr) {
+ struct page *page = virt_to_page(virt_addr);
+ clear_bit(PG_reserved, &page->flags);
if (s->async_dma_dir != DMA_NONE) {
dma_free_coherent(dev->hw_dev,
PAGE_SIZE,
- async->
- buf_page_list
- [i].virt_addr,
- async->
- buf_page_list
- [i].dma_addr);
+ virt_addr,
+ dma_addr);
} else {
- free_page((unsigned long)
- async->buf_page_list[i].
- virt_addr);
+ free_page((unsigned long) virt_addr);
}
}
}
@@ -478,26 +463,29 @@ int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
}
if (pages) {
for (i = 0; i < n_pages; i++) {
+ struct comedi_buf_page *buf_page =
+ &async->buf_page_list[i];
+ dma_addr_t dma_addr = buf_page->dma_addr;
+ struct page *page;
+
if (s->async_dma_dir != DMA_NONE) {
- async->buf_page_list[i].virt_addr =
+ buf_page->virt_addr =
dma_alloc_coherent(dev->hw_dev,
PAGE_SIZE,
- &async->
- buf_page_list
- [i].dma_addr,
+ &dma_addr,
GFP_KERNEL |
__GFP_COMP);
} else {
- async->buf_page_list[i].virt_addr =
+ buf_page->virt_addr =
(void *)
get_zeroed_page(GFP_KERNEL);
}
- if (async->buf_page_list[i].virt_addr == NULL)
+ if (buf_page->virt_addr == NULL)
break;
- set_bit(PG_reserved,
- &(virt_to_page(async->buf_page_list[i].virt_addr)->flags));
- pages[i] = virt_to_page(async->buf_page_list[i].virt_addr);
+ page = virt_to_page(buf_page->virt_addr);
+ set_bit(PG_reserved, &page->flags);
+ pages[i] = page;
}
}
if (i == n_pages) {
@@ -510,24 +498,27 @@ int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
/* Some allocation failed above. */
if (async->buf_page_list) {
for (i = 0; i < n_pages; i++) {
- if (async->buf_page_list[i].virt_addr ==
- NULL) {
+ struct comedi_buf_page *buf_page =
+ &async->buf_page_list[i];
+ void *virt_addr =
+ buf_page->virt_addr;
+ dma_addr_t dma_addr =
+ buf_page->dma_addr;
+ struct page *page =
+ virt_to_page(virt_addr);
+
+ if (virt_addr == NULL)
break;
- }
- clear_bit(PG_reserved, &(virt_to_page(async->buf_page_list[i].virt_addr)->flags));
+
+ clear_bit(PG_reserved, &page->flags);
if (s->async_dma_dir != DMA_NONE) {
dma_free_coherent(dev->hw_dev,
PAGE_SIZE,
- async->
- buf_page_list
- [i].virt_addr,
- async->
- buf_page_list
- [i].dma_addr);
+ virt_addr,
+ dma_addr);
} else {
free_page((unsigned long)
- async->buf_page_list
- [i].virt_addr);
+ virt_addr);
}
}
vfree(async->buf_page_list);
@@ -562,12 +553,7 @@ static unsigned int comedi_buf_munge(struct comedi_async *async,
int block_size;
block_size = num_bytes - count;
- if (block_size < 0) {
- printk(KERN_WARNING
- "%s: %s: bug! block_size is negative\n",
- __FILE__, __func__);
- break;
- }
+ BUG_ON(block_size < 0);
if ((int)(async->munge_ptr + block_size -
async->prealloc_bufsz) > 0)
block_size = async->prealloc_bufsz - async->munge_ptr;
@@ -646,8 +632,7 @@ unsigned comedi_buf_write_free(struct comedi_async *async, unsigned int nbytes)
{
if ((int)(async->buf_write_count + nbytes -
async->buf_write_alloc_count) > 0) {
- printk
- (KERN_INFO "comedi: attempted to write-free more bytes than have been write-allocated.\n");
+ comedi_info("attempted to write-free more bytes than have been write-allocated.\n");
nbytes = async->buf_write_alloc_count - async->buf_write_count;
}
async->buf_write_count += nbytes;
@@ -683,8 +668,7 @@ unsigned comedi_buf_read_free(struct comedi_async *async, unsigned int nbytes)
smp_mb();
if ((int)(async->buf_read_count + nbytes -
async->buf_read_alloc_count) > 0) {
- printk(KERN_INFO
- "comedi: attempted to read-free more bytes than have been read-allocated.\n");
+ comedi_info("attempted to read-free more bytes than have been read-allocated.\n");
nbytes = async->buf_read_alloc_count - async->buf_read_count;
}
async->buf_read_count += nbytes;
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists