This changes the format of unknown status values to be less verbose and
uses an array instead of several different snprintf calls. Since only
enum values are assigned to it, poll_state is changed from int to enum.
Use abs() for dB values instead of two almost identical return lines.
Signed-off-by: Simon Arlott <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Duncan Sands <[email protected]>
Cc: Andrew Morton <[email protected]>
---
Patch depends on existing cxacru patches in -rc7-mm.
On 27/02/07 20:26, Andrew Morton wrote:
+static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
+{
+ switch (value) {
+ case 0: return 0;
+ case 1: return snprintf(buf, PAGE_SIZE, "ANSI T1.413\n");
+ case 2: return snprintf(buf, PAGE_SIZE, "ITU-T G.992.1 (G.DMT)\n");
+ case 3: return snprintf(buf, PAGE_SIZE, "ITU-T G.992.2 (G.LITE)\n");
+ default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
+ }
+}
It is conventional to do
switch (a) {
case 0:
stuff();
break;
case 1:
stuff();
}
But all the above could be array-driven anyway.
Is the code below close to what you meant?
static char *str[] = { NULL, "not connected", "connected", "lost" };
if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
return snprintf(buf, PAGE_SIZE, "%u\n", value);
return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
On 21/04/07 18:56, Duncan Sands wrote:
+named device points to the USB interface device's directory which contains
+several sysfs attribute files for retriving device statistics:
retrieving
Thanks.
drivers/usb/atm/cxacru.c | 73 +++++++++++++++++++--------------------------
1 files changed, 31 insertions(+), 42 deletions(-)
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 0c47755..1c5d6de 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -171,7 +171,7 @@ struct cxacru_data {
struct delayed_work poll_work;
u32 card_info[CXINF_MAX];
struct mutex poll_state_serialize;
- int poll_state;
+ enum cxacru_poll_state poll_state;
/* contol handles */
struct mutex cm_serialize;
@@ -226,58 +226,48 @@ static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
{
- if (unlikely(value < 0)) {
- return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
- value / 100, -value % 100);
- } else {
- return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
- value / 100, value % 100);
- }
+ return snprintf(buf, PAGE_SIZE, "%u.%02u\n",
+ value / 100, abs(value) % 100);
}
static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
{
- switch (value) {
- case 0: return snprintf(buf, PAGE_SIZE, "no\n");
- case 1: return snprintf(buf, PAGE_SIZE, "yes\n");
- default: return 0;
- }
+ static char *str[] = { "no", "yes" };
+ if (unlikely(value >= ARRAY_SIZE(str)))
+ return snprintf(buf, PAGE_SIZE, "%u\n", value);
+ return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
{
- switch (value) {
- case 1: return snprintf(buf, PAGE_SIZE, "not connected\n");
- case 2: return snprintf(buf, PAGE_SIZE, "connected\n");
- case 3: return snprintf(buf, PAGE_SIZE, "lost\n");
- default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
- }
+ static char *str[] = { NULL, "not connected", "connected", "lost" };
+ if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
+ return snprintf(buf, PAGE_SIZE, "%u\n", value);
+ return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
{
- switch (value) {
- case 0: return snprintf(buf, PAGE_SIZE, "down\n");
- case 1: return snprintf(buf, PAGE_SIZE, "attempting to activate\n");
- case 2: return snprintf(buf, PAGE_SIZE, "training\n");
- case 3: return snprintf(buf, PAGE_SIZE, "channel analysis\n");
- case 4: return snprintf(buf, PAGE_SIZE, "exchange\n");
- case 5: return snprintf(buf, PAGE_SIZE, "up\n");
- case 6: return snprintf(buf, PAGE_SIZE, "waiting\n");
- case 7: return snprintf(buf, PAGE_SIZE, "initialising\n");
- default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
- }
+ static char *str[] = { "down", "attempting to activate",
+ "training", "channel analysis", "exchange", "up",
+ "waiting", "initialising"
+ };
+ if (unlikely(value >= ARRAY_SIZE(str)))
+ return snprintf(buf, PAGE_SIZE, "%u\n", value);
+ return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
{
- switch (value) {
- case 0: return 0;
- case 1: return snprintf(buf, PAGE_SIZE, "ANSI T1.413\n");
- case 2: return snprintf(buf, PAGE_SIZE, "ITU-T G.992.1 (G.DMT)\n");
- case 3: return snprintf(buf, PAGE_SIZE, "ITU-T G.992.2 (G.LITE)\n");
- default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
- }
+ static char *str[] = {
+ NULL,
+ "ANSI T1.413",
+ "ITU-T G.992.1 (G.DMT)",
+ "ITU-T G.992.2 (G.LITE)"
+ };
+ if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
+ return snprintf(buf, PAGE_SIZE, "%u\n", value);
+ return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
}
/*
@@ -308,11 +298,10 @@ static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
struct cxacru_data *instance = usbatm_instance->driver_data;
u32 value = instance->card_info[CXINF_LINE_STARTABLE];
- switch (value) {
- case 0: return snprintf(buf, PAGE_SIZE, "running\n");
- case 1: return snprintf(buf, PAGE_SIZE, "stopped\n");
- default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
- }
+ static char *str[] = { "running", "stopped" };
+ if (unlikely(value >= ARRAY_SIZE(str)))
+ return snprintf(buf, PAGE_SIZE, "%u\n", value);
+ return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
}
static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
--
1.5.0.1
--
Simon Arlott
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
