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Message-Id: <1476465777-720-1-git-send-email-fernando.apesteguia@gmail.com>
Date: Fri, 14 Oct 2016 19:22:57 +0200
From: Fernando Apesteguia <fernando.apesteguia@...il.com>
To: lidza.louina@...il.com
Cc: markh@...pro.net, gregkh@...uxfoundation.org,
driverdev-devel@...uxdriverproject.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org,
Fernando Apesteguia <fernando.apesteguia@...il.com>
Subject: [PATCH] staging: dgnc: replace DGNC_VERIFY_BOARD macro
The patch replaces the macro with a function (dgnc_get_board) and
substitutes the macro statement with a call to that function and a
comparison on the returned value.
This removes a checkpatch warning.
Signed-off-by: Fernando Apesteguia <fernando.apesteguia@...il.com>
---
drivers/staging/dgnc/dgnc_sysfs.c | 74 +++++++++++++++++++++++++++------------
1 file changed, 51 insertions(+), 23 deletions(-)
diff --git a/drivers/staging/dgnc/dgnc_sysfs.c b/drivers/staging/dgnc/dgnc_sysfs.c
index 290bf6e..3ea23a9 100644
--- a/drivers/staging/dgnc/dgnc_sysfs.c
+++ b/drivers/staging/dgnc/dgnc_sysfs.c
@@ -90,17 +90,21 @@ void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
driver_remove_file(driverfs, &driver_attr_pollrate);
}
-#define DGNC_VERIFY_BOARD(p, bd) \
- do { \
- if (!p) \
- return 0; \
- \
- bd = dev_get_drvdata(p); \
- if (!bd || bd->magic != DGNC_BOARD_MAGIC) \
- return 0; \
- if (bd->state != BOARD_READY) \
- return 0; \
- } while (0)
+static struct dgnc_board *dgnc_get_board(struct device *p)
+{
+ struct dgnc_board *bd;
+
+ if (!p)
+ return NULL;
+
+ bd = dev_get_drvdata(p);
+ if (!bd || bd->magic != DGNC_BOARD_MAGIC)
+ return NULL;
+ if (bd->state != BOARD_READY)
+ return NULL;
+
+ return bd;
+}
static ssize_t vpd_show(struct device *p, struct device_attribute *attr,
char *buf)
@@ -109,7 +113,9 @@ static ssize_t vpd_show(struct device *p, struct device_attribute *attr,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
count += sprintf(buf + count,
"\n 0 1 2 3 4 5 6 7 8 9 A B C D E F");
@@ -130,7 +136,9 @@ static ssize_t serial_number_show(struct device *p,
struct dgnc_board *bd;
int count = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
if (bd->serial_num[0] == '\0')
count += sprintf(buf + count, "<UNKNOWN>\n");
@@ -148,7 +156,9 @@ static ssize_t ports_state_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count,
@@ -166,7 +176,9 @@ static ssize_t ports_baud_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count,
@@ -184,7 +196,9 @@ static ssize_t ports_msignals_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
struct channel_t *ch = bd->channels[i];
@@ -215,7 +229,9 @@ static ssize_t ports_iflag_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
@@ -233,7 +249,9 @@ static ssize_t ports_cflag_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
@@ -251,7 +269,9 @@ static ssize_t ports_oflag_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
@@ -269,7 +289,9 @@ static ssize_t ports_lflag_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
@@ -287,7 +309,9 @@ static ssize_t ports_digi_flag_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
@@ -305,7 +329,9 @@ static ssize_t ports_rxcount_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
@@ -323,7 +349,9 @@ static ssize_t ports_txcount_show(struct device *p,
int count = 0;
int i = 0;
- DGNC_VERIFY_BOARD(p, bd);
+ bd = dgnc_get_board(p);
+ if (!bd)
+ return 0;
for (i = 0; i < bd->nasync; i++) {
count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
--
2.7.4
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